{
  "data": {
    "a": {
      "slug": "massive",
      "name": "Massive (formerly Polygon.io)",
      "vendor": "Massive",
      "vendorUrl": "https://massive.com",
      "kind": "http-api",
      "category": "market-data",
      "summary": "US market data API for stocks, options, indices, forex, crypto and futures, from the consolidated tapes.",
      "url": "https://www.anchorterminal.com/tools/massive",
      "markdownUrl": "https://www.anchorterminal.com/tools/massive.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/massive.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/massive.json",
      "dns": "massive.grade.anchorterminal.com",
      "repo": "https://github.com/massive-com/client-python",
      "license": "MIT (clients)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.massive.com",
      "packages": [],
      "auth": "api-key",
      "authNotes": "`?apiKey=` or Bearer. x402 payments at agent.massive.com need no key.",
      "pricing": "freemium",
      "pricingNotes": "Free Basic plan at 5 calls a minute with 2 years of end-of-day data. Stocks Starter $29, Developer $79 and Advanced $199 a month for individuals (non-commercial), business plans priced separately (https://massive.com/pricing). Over x402 at agent.massive.com, 24 US stock routes at $0.01 a request in USDC on Base, with the live price in each 402 response (https://agentic.market/services/agent-massive-com).",
      "priceSummary": "$0.01 / call",
      "where": "hosted",
      "x402": {
        "level": "yes",
        "evidence": "x402 on agent.massive.com since 2026-09-01 per the changelog. The docs say each route quotes its live price in the 402 response and only successful requests are charged. Agentic.Market lists 24 GET routes at $0.01 each on Base, US stocks only, covering aggregates, snapshots, indicators, reference data, news and SEC filings (https://massive.com/docs/ai-tools/x402).",
        "endpoints": [
          {
            "url": "https://agent.massive.com/v2/aggs/ticker/{stocksTicker}/range/{multiplier}/{timespan}/{from}/{to}",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://agent.massive.com/v2/snapshot/locale/us/markets/stocks/tickers/{stocksTicker}",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://agent.massive.com/v3/reference/tickers",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://agent.massive.com/v2/reference/news",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://agent.massive.com/stocks/filings/vX/index",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 1500,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-26"
      },
      "docsUrl": "https://massive.com/docs",
      "llmsTxt": "https://massive.com/llms.txt",
      "openapi": "https://api.massive.com/openapi",
      "capabilities": [
        "market.prices",
        "market.history",
        "data.markets",
        "market.crypto",
        "market.indices"
      ],
      "tags": [
        "official",
        "hosted",
        "x402",
        "freemium",
        "openapi",
        "llms-txt",
        "mcp"
      ],
      "lastRelease": "2026-10-28",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 73.1,
        "grade": "BB",
        "agentReady": true,
        "rank": 114,
        "ranked": true,
        "rankOf": 1520,
        "categoryRank": 1,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 78,
          "maintenance": 82,
          "payments": 90,
          "reliability": 78,
          "schema": 89,
          "security": 35,
          "transparency": 67
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-11-01"
        },
        "negative": 0,
        "verdict": "24 US stock routes over x402 at agent.massive.com, $0.01 each on Base, and only successful requests are charged. The status history lists 14 partial incidents in the 90 days to 1 November, including US equity aggregate bars missing for about 16 hours on 8 and 9 September.",
        "bestFor": "Agents that need US equities, options or futures data with real history, and the only listing here selling US stock data over x402.",
        "strengths": [
          "24 US stock routes over x402 at agent.massive.com, $0.01 each on Base, and only successful requests are charged",
          "OpenAPI document with enums and error responses, plus an llms.txt indexing about 160 endpoint pages",
          "Official clients in Python, JavaScript, Go and the JVM, regenerated from the OpenAPI spec as recently as 27 October 2026",
          "Incidents posted with start and end times on a Statuspage history feed",
          "Six dated changelog entries between 25 August and 28 October 2026"
        ],
        "weaknesses": [
          "14 partial incidents from 3 August to 1 November 2026, mostly stale or missing data on stock aggregates and quotes",
          "x402 covers US stocks only, with no ticks, streaming or other asset classes",
          "The API key is accepted as `?apiKey=` in the query string, the only scheme the OpenAPI file declares",
          "No security.txt, bug bounty or certification found, and the privacy policy dates from March 2024",
          "Individual plans are non-commercial and business terms forbid redistribution"
        ],
        "agentNotes": [
          "Send the key as a Bearer header, not `?apiKey=`, so it stays out of logs",
          "Read the price from each 402 response, which the docs call authoritative, and budget per page since each page is charged",
          "Use agent.massive.com only for US stocks. Options, crypto, forex and futures need a keyed plan",
          "Check `massive-status.com` when aggregates look stale, since several incidents since August were bars that stopped updating or went missing",
          "Don't republish prices fetched on an individual plan"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 73.1
          }
        ],
        "editorialScores": {
          "ergonomics": 78,
          "maintenance": 82,
          "payments": 90,
          "reliability": 78,
          "schema": 89,
          "security": 35,
          "transparency": 45
        },
        "provenanceScore": 88,
        "dataQualityScore": 87,
        "checked": {
          "categories": {
            "ergonomics": "2026-11-01",
            "maintenance": "2026-11-01",
            "payments": "2026-11-01",
            "reliability": "2026-11-01",
            "schema": "2026-11-01",
            "security": "2026-11-01",
            "transparency": "2026-11-01"
          },
          "last": "2026-11-01",
          "lastMoved": "2026-11-01",
          "oldest": "2026-11-01",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "http": "curl -H \"Authorization: Bearer $MASSIVE_API_KEY\" \"https://api.massive.com/v2/aggs/ticker/AAPL/prev\"",
        "claudeCode": "claude mcp add --transport http massive https://mcp.massive.com/"
      },
      "letme": {
        "capability": "https://letme.dev/market.prices",
        "tool": "https://letme.dev/massive"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "Stocks Starter",
          "unit": "month",
          "usd": 29,
          "note": "individual, non-commercial"
        },
        {
          "item": "Stocks Developer",
          "unit": "month",
          "usd": 79,
          "note": "individual, non-commercial"
        },
        {
          "item": "Stocks Advanced",
          "unit": "month",
          "usd": 199,
          "note": "individual, non-commercial"
        }
      ],
      "provenance": {
        "legalEntity": "Massive.com, Inc.",
        "domain": "massive.com",
        "domainRegistered": "1995-02-13",
        "domainNote": "massive.com was registered in 1995, decades before the rename.",
        "endpointOnVendorDomain": true,
        "terms": "https://massive.com/legal/businesses-terms-of-service",
        "privacy": "https://massive.com/legal/privacy",
        "statusPage": "https://massive-status.com",
        "changelog": "https://massive.com/changelog",
        "securityTxt": "none",
        "checked": "2026-11-01",
        "score": 88
      },
      "dataQuality": {
        "coverage": "All 19 US stock exchanges plus dark pools, and options, indices, forex, crypto and futures",
        "coverageRating": 5,
        "freshness": "Real time, 15-minute delayed or end of day by plan",
        "freshnessClass": "realtime",
        "history": "2 to 20+ years by plan",
        "historyYears": 20,
        "methodology": "https://massive.com/docs/rest/stocks/overview",
        "sourcesDisclosed": true,
        "licence": "Proprietary, with published terms for individuals and businesses",
        "licenceClass": "clear",
        "standing": "",
        "standingClass": "none",
        "reuse": "Business terms forbid redistributing, sublicensing or selling the data, and require deletion on termination. Individual plans are non-commercial.",
        "score": 87,
        "checks": null
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/massive.json",
      "live": {
        "slug": "massive",
        "probe": {
          "target": "https://api.massive.com",
          "method": "get",
          "lastAt": "2026-11-11T06:59:47.042620785Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 281,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 99.97,
          "p50ms24h": 236,
          "p95ms24h": 317,
          "samples24h": 244,
          "samples30d": 7731,
          "days": [
            {
              "date": "2026-10-11",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-12",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-13",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-14",
              "probes": 249,
              "ok": 248
            },
            {
              "date": "2026-10-15",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-16",
              "probes": 252,
              "ok": 252
            },
            {
              "date": "2026-10-17",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-18",
              "probes": 256,
              "ok": 256
            },
            {
              "date": "2026-10-19",
              "probes": 255,
              "ok": 255
            },
            {
              "date": "2026-10-20",
              "probes": 252,
              "ok": 252
            },
            {
              "date": "2026-10-21",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-22",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-23",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-24",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-10-25",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-26",
              "probes": 252,
              "ok": 252
            },
            {
              "date": "2026-10-27",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-10-28",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-10-29",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-30",
              "probes": 249,
              "ok": 248
            },
            {
              "date": "2026-10-31",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-11-01",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-11-02",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-11-03",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-11-04",
              "probes": 246,
              "ok": 246
            },
            {
              "date": "2026-11-05",
              "probes": 185,
              "ok": 185
            },
            {
              "date": "2026-11-06",
              "probes": 241,
              "ok": 241
            },
            {
              "date": "2026-11-07",
              "probes": 243,
              "ok": 243
            },
            {
              "date": "2026-11-08",
              "probes": 243,
              "ok": 243
            },
            {
              "date": "2026-11-09",
              "probes": 243,
              "ok": 243
            },
            {
              "date": "2026-11-10",
              "probes": 244,
              "ok": 244
            },
            {
              "date": "2026-11-11",
              "probes": 72,
              "ok": 72
            }
          ],
          "since": "2026-10-08T00:00:00Z"
        },
        "vendorStatus": {
          "page": "https://massive-status.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-11-11T06:55:15.251339852Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "massive-com/client-python",
            "version": "v2.9.2",
            "released": "2026-11-10",
            "seenAt": "2026-11-11T06:13:40.145982865Z"
          }
        ],
        "githubStars": 1527,
        "securityTxt": {
          "url": "https://massive.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-11-10T16:08:28.600381031Z"
        },
        "llmsTxt": {
          "url": "https://massive.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-11-10T15:43:35.173566255Z"
        },
        "domain": {
          "domain": "massive.com",
          "registered": "1995-02-13",
          "source": "https://rdap.verisign.com/com/v1/domain/massive.com",
          "checkedAt": "2026-11-08T15:13:15.307093285Z"
        },
        "pages": [
          {
            "url": "https://massive.com/changelog",
            "kind": "deprecations",
            "status": 200,
            "checkedAt": "2026-11-10T16:25:08.174658985Z",
            "changedAt": "2026-11-10T16:25:08.174658985Z",
            "fingerprint": "38ae8813fcdc"
          },
          {
            "url": "https://massive.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-11-10T16:25:14.520761296Z",
            "changedAt": "2026-10-31T06:16:08.173405264Z",
            "fingerprint": "c06a4148bf72"
          },
          {
            "url": "https://massive.com/legal/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-11-10T16:25:12.615718151Z",
            "changedAt": "2026-10-31T06:16:05.957773097Z",
            "fingerprint": "1c9024302c92"
          },
          {
            "url": "https://massive.com/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-01T13:14:17.398766419Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "469364c15f7e"
          },
          {
            "url": "https://massive.com/legal/businesses-terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-11-10T16:25:10.658918034Z",
            "changedAt": "2026-10-31T06:16:03.806023028Z",
            "fingerprint": "f4ec38dadfe4"
          }
        ],
        "mcpTools": {
          "url": "https://mcp.massive.com/",
          "checkedAt": "2026-11-11T02:43:00.259858671Z",
          "status": "auth",
          "note": "asks for credentials before listing its tools",
          "changedAt": "2026-11-07T01:46:11.88942455Z"
        },
        "github": {
          "repo": "massive-com/client-python",
          "checkedAt": "2026-11-09T10:39:31.814820138Z",
          "stars": 1526,
          "archived": false,
          "issuesEnabled": true,
          "pushedAt": "2026-11-02T16:33:04Z",
          "openIssues": 13,
          "openPRs": 10,
          "issuesOpened90d": 3,
          "issuesClosed90d": 3,
          "prsMerged90d": 14,
          "ci": {
            "branch": "master",
            "runs": 50,
            "success": 48,
            "failure": 2,
            "other": 0,
            "latest": "success",
            "latestAt": "2026-10-26T04:23:15Z"
          },
          "replies": {
            "sampled": 25,
            "unanswered": 7,
            "medianDays": 1.1
          }
        },
        "updatedAt": "2026-11-11T06:59:47.042620785Z"
      },
      "streak": {
        "days": 34,
        "from": "2026-10-08",
        "sinceWatching": true,
        "last": {
          "kind": "shutdown",
          "date": "2026-06-22",
          "what": "Financials VX endpoint sunset",
          "source": "https://massive.com/changelog"
        },
        "best": 34
      }
    },
    "answer": "Massive (formerly Polygon.io) scores 73.1 (BB) on agent readiness against TickerLayer's 71.5 (BB), and leads in 4 of 7 scored categories. TickerLayer leads on security \u0026 auth.",
    "b": {
      "slug": "tickerlayer",
      "name": "TickerLayer",
      "vendor": "TickerLayer",
      "vendorUrl": "https://tickerlayer.com",
      "kind": "http-api",
      "category": "market-data",
      "summary": "TickerLayer is a market data API for stocks, forex, crypto, indices, ETFs, commodities, bond yields and perpetual futures, over REST and WebSocket with an API key, a hosted MCP server and pay-per-call x402 access in USDC on Base.",
      "url": "https://www.anchorterminal.com/tools/tickerlayer",
      "markdownUrl": "https://www.anchorterminal.com/tools/tickerlayer.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/tickerlayer.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/tickerlayer.json",
      "dns": "tickerlayer.grade.anchorterminal.com",
      "repo": "https://github.com/tickerlayer/agent-plugin",
      "license": "Proprietary hosted service under the TickerLayer terms of use, user agreement and market data disclaimer (all effective 3 November 2026), which name no legal entity or governing law. Free and Individual plans are for internal use, Business adds use inside the customer's own product, and redistribution needs a written Enterprise agreement. The agent plugin (github.com/tickerlayer/agent-plugin) and the npm client are MIT",
      "transports": [
        "http",
        "streamable-http",
        "websocket"
      ],
      "remoteUrl": "https://mcp.tickerlayer.com/mcp",
      "packages": [
        {
          "registry": "npm",
          "name": "tickerlayer"
        },
        {
          "registry": "pypi",
          "name": "tickerlayer"
        }
      ],
      "auth": "mixed",
      "authNotes": "REST takes an API key in the `x-api-key` header. The OpenAPI file also defines `ApiKeyQuery`, an `apiKey` query parameter described as a 'compatibility fallback' that 'keeps the key in logged URLs', and the WebSocket at wss://stream.tickerlayer.com takes the key only in the URL as `apiKey`. A person creates the key in the dashboard after a browser signup. It is shown once and has no scopes, and regenerating it invalidates the previous key. The hosted MCP server takes the key as `x-api-key` or `Authorization: Bearer`, or OAuth 2.1 against https://api.tickerlayer.com (authorisation code with PKCE S256, dynamic client registration, refresh tokens, a revocation endpoint and one scope, `market.read`). The x402 gateway at https://x402.tickerlayer.com needs no account or key (https://tickerlayer.com/llms.txt, https://tickerlayer.com/openapi.json, https://tickerlayer.com/docs/mcp, https://api.tickerlayer.com/.well-known/oauth-authorization-server, https://tickerlayer.com/terms-of-use, checked 2026-11-10).",
      "pricing": "freemium",
      "pricingNotes": "Free plan at 0 USD with no card, per llms.txt, covering crypto, forex and US stocks over REST, 3,000 calls every 30 days, 10 requests a second, no WebSocket, internal use only. Individual plans are priced per feed, 49 USD a month for crypto, commodities or indices, 59 USD for forex or ETFs and 59 to 99 USD per stock market (United States 99 USD), each with 250,000 REST calls a month, 1 WebSocket connection and 10 symbols. Business runs 449 to 999 USD per feed with 25 million calls and 100 requests a second, for use inside the customer's own product. Perpetuals 179 or 799 USD, Futures CFDs 219 or 849 USD, add-ons (overnight session, SignalPoint, Fundamentals, Bonds) 39 to 449 USD. Yearly billing is 20 per cent lower. Enterprise is custom, with redistribution and an SLA. Without an account, x402 charges 0.01 to 0.10 USDC a call on Base and settles only after a valid response (https://tickerlayer.com/pricing, https://tickerlayer.com/llms.txt, https://tickerlayer.com/ai/x402.md, checked 2026-11-10).",
      "priceSummary": "$0.01 / call",
      "where": "hosted",
      "x402": {
        "level": "yes",
        "evidence": "Production gateway https://x402.tickerlayer.com on Base mainnet (`eip155:8453`) in USDC, with a sandbox at https://x402-testnet.tickerlayer.com on Base Sepolia. The catalogue lists 41 GET resources, scheme exact, protocol version 2, facilitator `coinbase-cdp-mainnet`, accountRequired false. Six routes each for stocks, forex, crypto, indices, ETFs and commodities, plus bond yields and four market-calendar routes. Perpetuals, Futures CFDs, the add-ons and WebSocket are not covered. Settlement only after a valid response, and payment identifiers bound to the request (https://x402.tickerlayer.com/catalog, https://tickerlayer.com/ai/x402.md, checked 2026-11-10).",
        "endpoints": [
          {
            "url": "https://x402.tickerlayer.com/v1/stocks/quote/{symbol}",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://x402.tickerlayer.com/v1/crypto/snapshot/{symbol}",
            "priceUsd": 0.02,
            "network": "eip155:8453"
          },
          {
            "url": "https://x402.tickerlayer.com/v1/forex/agg/{symbol}/{multiplier}/{timespan}/{from}/{to}",
            "priceUsd": 0.03,
            "network": "eip155:8453"
          },
          {
            "url": "https://x402.tickerlayer.com/v1/bond/last/{symbol}",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://x402.tickerlayer.com/v1/markets/status",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 12,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-11-10"
      },
      "docsUrl": "https://tickerlayer.com/docs",
      "llmsTxt": "https://tickerlayer.com/llms.txt",
      "openapi": "https://tickerlayer.com/openapi.json",
      "registryName": "com.tickerlayer/market-data",
      "capabilities": [
        "market.prices",
        "market.history",
        "market.crypto",
        "market.indices",
        "market.fundamentals",
        "data.markets"
      ],
      "tags": [
        "official",
        "hosted",
        "x402",
        "freemium",
        "free-tier",
        "no-card",
        "openapi",
        "llms-txt",
        "mcp",
        "remote-mcp",
        "mcp-registry",
        "oauth",
        "api-key",
        "websocket",
        "streaming",
        "status-page",
        "closed-source",
        "python",
        "typescript",
        "agent-skills",
        "pre-1.0",
        "new"
      ],
      "lastRelease": "2026-11-06",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 71.5,
        "grade": "BB",
        "agentReady": true,
        "rank": 160,
        "ranked": true,
        "rankOf": 1520,
        "categoryRank": 2,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 79,
          "maintenance": 79,
          "payments": 92,
          "reliability": 70,
          "schema": 88,
          "security": 49,
          "transparency": 38
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-11-10"
        },
        "negative": 0,
        "verdict": "An agent can read quotes, bars and market hours across eight asset classes through a documented REST API, 12 MCP tools or 41 x402 resources with no account, and 429s carry Retry-After. The data is derived from unnamed non-exchange sources, no operator is named, and the status history couldn't be read.",
        "bestFor": "An agent that needs latest prices, bars and market hours across stocks, forex, crypto, indices, ETFs, commodities, bond yields and perpetual futures from one schema, and wants to pay per call without an account.",
        "strengths": [
          "x402 on its own gateway for 41 routes across six asset classes, bond yields and market hours, from 0.01 USDC, settled only after a valid response",
          "OpenAPI 3.1 with enums, examples and one error schema carrying `retryAfterMs`, `resetsAt` and the missing product, plus `Retry-After` and `X-RateLimit-*` headers",
          "llms.txt, llms-full.txt, a Markdown twin of every docs page and a skill that says which MCP tool to use for which question",
          "A dated changelog of 50 entries from 8 September to 6 November 2026",
          "MCP server under OAuth 2.1 with PKCE, dynamic registration, revocation and one read scope, listed in the official registry as `com.tickerlayer/market-data`"
        ],
        "weaknesses": [
          "The data is derived and indicative from unnamed non-exchange sources, and no page says it is licensed from an exchange",
          "No legal entity, address or governing law in the terms, user agreement or privacy policy",
          "The REST key can travel as an `apiKey` query parameter, and the WebSocket takes it only in the URL",
          "The privacy policy names no subprocessors and gives no period for request logs",
          "No security.txt, bug bounty or certification found, and the status page's history loads from a path robots.txt disallows"
        ],
        "agentNotes": [
          "Write stocks as `COUNTRY:TICKER`, such as `US:KO`, and always pass `asset_class` to the data tools.",
          "If a 429 carries `REST_QUOTA_EXCEEDED`, stop and tell the user. Waiting doesn't reset the monthly quota.",
          "Present prices as indicative TickerLayer values, never as official exchange prices.",
          "Call `get_market_status` before you report a quiet symbol as missing data.",
          "Send the key in the `x-api-key` header, never as the `apiKey` query parameter."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 71.5
          }
        ],
        "editorialScores": {
          "ergonomics": 79,
          "maintenance": 79,
          "payments": 92,
          "reliability": 70,
          "schema": 88,
          "security": 49,
          "transparency": 30
        },
        "provenanceScore": 46,
        "checked": {
          "categories": {
            "ergonomics": "2026-11-10",
            "maintenance": "2026-11-10",
            "payments": "2026-11-10",
            "reliability": "2026-11-10",
            "schema": "2026-11-10",
            "security": "2026-11-10",
            "transparency": "2026-11-10"
          },
          "last": "2026-11-10",
          "oldest": "2026-11-10",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "npm install tickerlayer",
        "http": "curl -H \"x-api-key: $TICKERLAYER_API_KEY\" \"https://api.tickerlayer.com/stocks/quote/US:KO\"",
        "claudeCode": "claude mcp add --transport http tickerlayer https://mcp.tickerlayer.com/mcp",
        "config": {
          "mcpServers": {
            "tickerlayer": {
              "type": "http",
              "url": "https://mcp.tickerlayer.com/mcp"
            }
          }
        },
        "x402": "curl -i \"https://x402.tickerlayer.com/v1/stocks/quote/US:KO\""
      },
      "letme": {
        "capability": "https://letme.dev/market.prices",
        "tool": "https://letme.dev/tickerlayer"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "x402 quote, last trade or previous close",
          "unit": "call",
          "usd": 0.01,
          "note": "USDC on Base, no account, with snapshot and symbol lists at 0.02"
        },
        {
          "item": "x402 historical bars, up to 100",
          "unit": "call",
          "usd": 0.03,
          "note": "0.05 for up to 500 bars and 0.10 for up to 1,000"
        },
        {
          "item": "Individual crypto, commodities or indices feed",
          "unit": "month",
          "usd": 49,
          "note": "250,000 REST calls a month, 10 requests a second, internal use only"
        },
        {
          "item": "Individual US stocks feed",
          "unit": "month",
          "usd": 99,
          "note": "other stock markets 59 to 99 USD each, internal use only"
        },
        {
          "item": "Business crypto, commodities or indices feed",
          "unit": "month",
          "usd": 449,
          "note": "25 million REST calls a month, 100 requests a second, use inside the customer's own product"
        }
      ],
      "provenance": {
        "legalEntity": "",
        "domain": "tickerlayer.com",
        "domainRegistered": "2026-04-29",
        "domainNote": "RDAP (Verisign) gives tickerlayer.com a registration date of 29 April 2026 through Cloudflare, last changed 5 October 2026. No page read names a company, registration number, address or country.",
        "endpointOnVendorDomain": true,
        "terms": "https://tickerlayer.com/terms-of-use",
        "privacy": "https://tickerlayer.com/privacy-policy",
        "statusPage": "https://status.tickerlayer.com",
        "changelog": "https://tickerlayer.com/docs/changelog",
        "securityTxt": "none",
        "checked": "2026-11-10",
        "notes": [
          "No legal entity is named anywhere read. The terms of use, the user agreement and the privacy policy (all effective 3 November 2026), the about page and the pricing footer name only 'TickerLayer' or 'the operator of TickerLayer', with no company, registration number, address, country or governing law. Their contact addresses are obfuscated and weren't read. The plugin README gives info@tickerlayer.com.",
          "The terms say the Services come 'AS IS', promise no uptime, cap liability at the greater of 12 months' fees or US$100, and allow MCP tools to change 'with reasonable notice where practical'. The user agreement makes payments non-refundable, refunds at TickerLayer's discretion. The terms ban scraping public pages at a volume that interferes with the Services. A handful of pages were read at a person's pace.",
          "The privacy policy keeps WebSocket connection records for 7 days and request and tool-call logs for 'a limited operational window', names subprocessor categories but no vendors, and says nothing on model training or transfer mechanisms.",
          "robots.txt on tickerlayer.com disallows ia_archiver and archive.org_bot entirely and, for `*`, /dashboard, /admin, /login, /signup, /auth, /oauth, /api, /billing, /profile, the market pages and /cdn-cgi/, with no Content-Signal. x402.tickerlayer.com disallows /v1/ and status.tickerlayer.com disallows /api/. robots.txt on mcp.tickerlayer.com and api.tickerlayer.com answered a client error, read as no rules. Only their OAuth metadata and one unauthenticated GET to /mcp (client error) were sent there.",
          "/.well-known/security.txt answered a client error.",
          "firstReleased is 2026-08-07, the first commit of tickerlayer/agent-plugin ('Release v0.1.0'), whose changelog names the hosted MCP server. The about page says the API opened in 'Early 2026' with no day. lastRelease is 2026-11-06, the newest changelog entry."
        ],
        "score": 46
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/tickerlayer.json",
      "live": {
        "slug": "tickerlayer",
        "probe": {
          "target": "https://mcp.tickerlayer.com/mcp",
          "method": "get",
          "lastAt": "2026-11-11T07:00:06.406304915Z",
          "lastOk": true,
          "lastStatus": 405,
          "lastMs": 160,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 150,
          "p95ms24h": 222,
          "samples24h": 43,
          "samples30d": 43,
          "days": [
            {
              "date": "2026-11-11",
              "probes": 43,
              "ok": 43
            }
          ],
          "since": "2026-11-11T02:53:34.214194678Z"
        },
        "vendorStatus": {
          "page": "https://status.tickerlayer.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-11-11T05:35:55.448183455Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "tickerlayer",
            "version": "0.1.0",
            "seenAt": "2026-11-11T06:42:09.859295043Z"
          },
          {
            "registry": "pypi",
            "name": "tickerlayer",
            "version": "0.1.0",
            "released": "2026-10-20",
            "seenAt": "2026-11-11T06:42:10.714909327Z"
          }
        ],
        "githubStars": 0,
        "npmWeekly": 6,
        "pypiWeekly": 5,
        "updatedAt": "2026-11-11T07:00:06.406304915Z"
      },
      "streak": {
        "days": 0,
        "from": "2026-11-11",
        "sinceWatching": true,
        "best": 0
      }
    },
    "edges": [
      {
        "by": 29,
        "category": "transparency",
        "leads": "massive",
        "name": "Transparency \u0026 trust",
        "reasons": {
          "a": "Closed service under business terms last updated 6 October 2026, Massive.com, Inc. under Georgia law, which now also cover pay-per-request purchases without an account. The MCP server and clients are MIT (15). Privacy policy last updated 22 March 2024, with retention 'as long as we are providing the Services' and no periods. The business terms require deleting data on termination. No DPA found (12 of 30). Dated sunsets in the changelog. The terms let Massive change the Services at its discretion, with a 30-day route to report a change that materially degrades a subscribed service (10 of 20). Stripe, Google and Hotjar are named, and data may sit 'in the United States and locations around the world'. No subprocessor list (8 of 20).",
          "b": "The editorial half. A closed service whose terms of use, user agreement and market data disclaimer (all effective 3 November 2026) set out internal, commercial and redistribution rights by plan and a liability cap. They name no legal entity, address or governing law, so the contracting party is unknown. The plugin and npm client are MIT. Soldfetch took 10 in the same position (10 of 30). The privacy policy keeps WebSocket connection records for 7 days but gives no period for request and tool-call logs or account data after closure, says nothing on model training, names no transfer mechanism and has no DPA (12 of 30). No deprecation policy. The terms allow MCP tools to change 'with reasonable notice where practical' and the user agreement promises notice before a plan is materially reduced, and the changelog records changes after the fact. Kite took 4 (4 of 20). Subprocessors are given only as categories (hosting, authentication, card and crypto payments, email, an AI model for support replies), with analytics vendors deferred to the cookie policy, no data locations, and no named data suppliers (4 of 20). 10+12+4+4 = 30. The provenance half is computed from the provenance block."
        },
        "scores": {
          "a": 67,
          "b": 38
        }
      },
      {
        "by": 14,
        "category": "security",
        "leads": "tickerlayer",
        "name": "Security \u0026 auth",
        "reasons": {
          "a": "A plain account key with no scopes, sent as a Bearer header or as `?apiKey=` in the query string, a documented option (20 less 10, so 10). The x402 route at agent.massive.com needs no key. Read-only market data with no write actions (15 of 20). The x402 set includes news and SEC filing text written by third parties, and we found no guidance on treating it as untrusted (5 of 15). Paid x402 calls leave an on-chain USDC transfer. We found no request log documented for keyed callers (5 of 15). security.txt returns 404, and the terms and privacy policy name no SOC 2, ISO 27001, bug bounty or disclosure policy, only safeguards 'consistent with general industry standards' (0 of 20).",
          "b": "A plain account key with no scopes, shown once and replaced by regenerating it in the dashboard (20). The OpenAPI file defines an `apiKey` query parameter as a 'compatibility fallback', and the WebSocket takes the key only in its URL, so 10 off. The MCP server adds OAuth 2.1 with PKCE S256, dynamic registration, refresh tokens, a revocation endpoint and one scope, `market.read`. Twelve-data took 18 on the same pattern, one less here because the WebSocket has no header option (17 of 30). Every operation reads data, and the OAuth scope is read-only, as for twelve-data and financial-datasets (15 of 20). Responses are prices, bars, symbols, calendars and yields. There is no news feed, and SignalPoint signals are structured fields, so no untrusted text reaches the agent (10 of 15). Rate-limit headers on every response, quota 429s that state the limit and when it renews, and a dashboard list of WebSocket connections with source IP, key and how each ended (24 October 2026). No per-call REST log for the key holder was found, though the privacy policy says request logs are kept (7 of 15). security.txt answered a client error, and no disclosure policy, bug bounty, SOC 2 or ISO 27001 was found (0 of 20). 17+15+10+7+0 = 49."
        },
        "scores": {
          "a": 35,
          "b": 49
        }
      },
      {
        "by": 8,
        "category": "reliability",
        "leads": "massive",
        "name": "Reliability",
        "reasons": {
          "a": "Atlassian Statuspage at massive-status.com with REST, WebSocket and flat-file components for each asset class (20). The history feed lists 14 unplanned incidents from 3 August to 1 November 2026, each limited to one product, one endpoint, one asset class or some accounts. They include US equity aggregate bars missing for roughly two-thirds of US equities from 18:46 ET on 8 September until 10:29 the next day, stale stocks quotes on 20 August, and slow responses with intermittent 502s on stocks v2 aggregates from 10:37 to 13:08 ET on 2 September. The newest, on 27 October, was delayed WebSocket data and REST errors for some accounts from 13:49 to 14:17 EDT. Read the way partial incidents are read on other listings, that is minor incidents only (20). Free plan limited to 5 calls a minute, paid plans unlimited, nothing stated for x402 (10 of 15). No 429 or Retry-After guidance found in the docs or the OpenAPI file, though the official Python client retries 429 with backoff (8 of 15). The business terms dated 6 October 2026 point to a separate Support Policy and SLA document for customers who buy service levels (10). The REST API is generally available (10).",
          "b": "Read with the hosted lines, on the REST API. status.tickerlayer.com is an UptimeRobot page linked from the site header (20). Its monitors and history load by script from /api/, which its robots.txt disallows, so no incident record was read, as for eodhd and apitemplate-io (5). Limits are published with numbers, 10 requests a second per account on Free and Individual, 100 on Business, and monthly call quotas per feed (15). The OpenAPI file's 429 carries `Retry-After` and a body with `retryAfterMs`, `resetsAt` and a code that separates the per-second limit from the monthly quota, and every response has carried `X-RateLimit-Limit` and `X-RateLimit-Remaining` since 14 September 2026. Every data operation is a GET, and x402 retries with the same payment identifier return the stored response (15). An SLA is named only for Enterprise under a written agreement and as 'partially available' on Business, with no published terms or figure, and the terms of use promise no uptime. Financial-datasets took 10 for SLAs listed on a self-serve plan, so this is half (5 of 10). No beta or preview label on the REST API, the MCP server or the x402 gateway (10). 20+5+15+15+5+10 = 70."
        },
        "scores": {
          "a": 78,
          "b": 70
        }
      }
    ],
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Massive",
        "b": "TickerLayer",
        "name": "Vendor"
      },
      {
        "a": "https://api.massive.com",
        "b": "https://mcp.tickerlayer.com/mcp",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "HTTP, Streamable HTTP, websocket",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "yes, from $0.01/call",
        "b": "yes, from $0.01/call",
        "name": "x402"
      },
      {
        "a": "MIT (clients)",
        "b": "Proprietary hosted service under the TickerLayer terms of use, user agreement and market data disclaimer (all effective 3 November 2026), which name no legal entity or governing law. Free and Individual plans are for internal use, Business adds use inside the customer's own product, and redistribution needs a written Enterprise agreement. The agent plugin (github.com/tickerlayer/agent-plugin) and the npm client are MIT",
        "name": "Licence"
      },
      {
        "a": "none",
        "b": "12",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "not listed",
        "b": "com.tickerlayer/market-data",
        "name": "MCP registry"
      },
      {
        "a": "2026-10-28",
        "b": "2026-11-06",
        "name": "Last release"
      },
      {
        "a": "2026-10-06",
        "b": "not read yet",
        "name": "Terms last updated"
      },
      {
        "a": "2024-03-22",
        "b": "not read yet",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not read yet",
        "name": "Customer content may train models"
      },
      {
        "a": "yes",
        "b": "not read yet",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "not read yet",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "not read yet",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "not read yet",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "1.5k stars",
        "b": "none",
        "name": "Popularity"
      },
      {
        "a": "3.5/5 (2)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Massive (formerly Polygon.io) scores 73.1 (BB) on agent readiness against TickerLayer's 71.5 (BB), and leads in 4 of 7 scored categories. TickerLayer leads on security \u0026 auth.",
        "question": "Which is better for AI agents, Massive (formerly Polygon.io) or TickerLayer?"
      },
      {
        "answer": "Massive (formerly Polygon.io) needs an API key. TickerLayer takes an API key or an OAuth sign-in. An agent can also pay Massive (formerly Polygon.io) per call over x402, with no account. An agent can also pay TickerLayer per call over x402, with no account.",
        "question": "Do Massive (formerly Polygon.io) and TickerLayer need an API key?"
      },
      {
        "answer": "Yes. Massive (formerly Polygon.io) has a hosted endpoint at https://api.massive.com and TickerLayer at https://mcp.tickerlayer.com/mcp.",
        "question": "Can an agent call Massive (formerly Polygon.io) and TickerLayer without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 78 against 70",
          "Transparency \u0026 trust, 67 against 38"
        ],
        "also": null,
        "goodFor": "Agents that need US equities, options or futures data with real history, and the only listing here selling US stock data over x402.",
        "slug": "massive",
        "watchFor": "14 partial incidents from 3 August to 1 November 2026, mostly stale or missing data on stock aggregates and quotes"
      },
      {
        "aheadOn": [
          "Security \u0026 auth, 49 against 35"
        ],
        "also": [
          "Free to start without a card"
        ],
        "goodFor": "An agent that needs latest prices, bars and market hours across stocks, forex, crypto, indices, ETFs, commodities, bond yields and perpetual futures from one schema, and wants to pay per call without an account.",
        "slug": "tickerlayer",
        "watchFor": "The data is derived and indicative from unnamed non-exchange sources, and no page says it is licensed from an exchange"
      }
    ],
    "history": {
      "massive": [
        {
          "causes": [
            "product",
            "correction"
          ],
          "date": "2026-11-01",
          "delta": 3.2,
          "from": 69.9,
          "fromGrade": "B",
          "to": 73.1,
          "toGrade": "BB"
        },
        {
          "causes": [
            "method"
          ],
          "date": "2026-10-27",
          "delta": 0.1,
          "from": 69.8,
          "fromGrade": "B",
          "to": 69.9,
          "toGrade": "B"
        },
        {
          "causes": [
            "method"
          ],
          "date": "2026-10-08",
          "delta": -0.2,
          "from": 70,
          "fromGrade": "BB",
          "to": 69.8,
          "toGrade": "B"
        }
      ],
      "tickerlayer": null
    },
    "job": {
      "capability": "market.prices",
      "name": "Market prices"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-massive.json",
        "title": "Alpha Vantage vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-tickerlayer.json",
        "title": "Alpha Vantage vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/benzinga-vs-massive.json",
        "title": "Benzinga vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/benzinga-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/benzinga-vs-tickerlayer.json",
        "title": "Benzinga vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/benzinga-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/databento-vs-massive.json",
        "title": "Databento vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/databento-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/databento-vs-tickerlayer.json",
        "title": "Databento vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/databento-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/eulerpool-vs-massive.json",
        "title": "Eulerpool Financial Data API vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/eulerpool-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-massive.json",
        "title": "Financial Datasets vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/financial-modeling-prep-vs-massive.json",
        "title": "Financial Modeling Prep vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/financial-modeling-prep-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/finnhub-vs-massive.json",
        "title": "Finnhub vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/finnhub-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/finnhub-vs-tickerlayer.json",
        "title": "Finnhub vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/finnhub-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/intrinio-vs-massive.json",
        "title": "Intrinio vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/intrinio-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/intrinio-vs-tickerlayer.json",
        "title": "Intrinio vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/intrinio-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/massive-vs-tiingo.json",
        "title": "Massive (formerly Polygon.io) vs Tiingo",
        "url": "https://www.anchorterminal.com/compare/massive-vs-tiingo"
      },
      {
        "json": "https://www.anchorterminal.com/compare/massive-vs-twelve-data.json",
        "title": "Massive (formerly Polygon.io) vs Twelve Data",
        "url": "https://www.anchorterminal.com/compare/massive-vs-twelve-data"
      },
      {
        "json": "https://www.anchorterminal.com/compare/tickerlayer-vs-tiingo.json",
        "title": "TickerLayer vs Tiingo",
        "url": "https://www.anchorterminal.com/compare/tickerlayer-vs-tiingo"
      },
      {
        "json": "https://www.anchorterminal.com/compare/tickerlayer-vs-twelve-data.json",
        "title": "TickerLayer vs Twelve Data",
        "url": "https://www.anchorterminal.com/compare/tickerlayer-vs-twelve-data"
      },
      {
        "json": "https://www.anchorterminal.com/compare/eulerpool-vs-tickerlayer.json",
        "title": "Eulerpool Financial Data API vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/eulerpool-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-tickerlayer.json",
        "title": "Financial Datasets vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/financial-modeling-prep-vs-tickerlayer.json",
        "title": "Financial Modeling Prep vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/financial-modeling-prep-vs-tickerlayer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/eodhd-vs-massive.json",
        "title": "EODHD vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/eodhd-vs-massive"
      },
      {
        "json": "https://www.anchorterminal.com/compare/eodhd-vs-tickerlayer.json",
        "title": "EODHD vs TickerLayer",
        "url": "https://www.anchorterminal.com/compare/eodhd-vs-tickerlayer"
      }
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    "panel": null,
    "scores": [
      {
        "by": 8,
        "edge": "massive",
        "key": "reliability",
        "massive": 78,
        "name": "Reliability",
        "tickerlayer": 70,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 1,
        "edge": "massive",
        "key": "schema",
        "massive": 89,
        "name": "Schema \u0026 documentation",
        "tickerlayer": 88,
        "weight": 13
      },
      {
        "by": 1,
        "edge": "tickerlayer",
        "key": "ergonomics",
        "massive": 78,
        "name": "Agent ergonomics",
        "tickerlayer": 79,
        "weight": 13
      },
      {
        "by": 14,
        "edge": "tickerlayer",
        "key": "security",
        "massive": 35,
        "name": "Security \u0026 auth",
        "tickerlayer": 49,
        "weight": 14
      },
      {
        "by": 2,
        "edge": "tickerlayer",
        "key": "payments",
        "massive": 90,
        "name": "Payments \u0026 pricing",
        "tickerlayer": 92,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 3,
        "edge": "massive",
        "key": "maintenance",
        "massive": 82,
        "name": "Maintenance \u0026 community",
        "tickerlayer": 79,
        "weight": 7
      },
      {
        "by": 29,
        "edge": "massive",
        "key": "transparency",
        "massive": 67,
        "name": "Transparency \u0026 trust",
        "tickerlayer": 38,
        "weight": 7
      }
    ],
    "summary": "Massive (formerly Polygon.io) scores 73.1 (BB) on agent readiness against TickerLayer's 71.5 (BB), and leads in 4 of 7 scored categories. TickerLayer leads on security \u0026 auth. Both do market prices.",
    "tasks": null,
    "tutorials": [],
    "verdicts": {
      "massive": "24 US stock routes over x402 at agent.massive.com, $0.01 each on Base, and only successful requests are charged. The status history lists 14 partial incidents in the 90 days to 1 November, including US equity aggregate bars missing for about 16 hours on 8 and 9 September.",
      "tickerlayer": "An agent can read quotes, bars and market hours across eight asset classes through a documented REST API, 12 MCP tools or 41 x402 resources with no account, and 429s carry Retry-After. The data is derived from unnamed non-exchange sources, no operator is named, and the status history couldn't be read."
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    "markdown": "https://www.anchorterminal.com/compare/massive-vs-tickerlayer.md",
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  "markdown": "Massive (formerly Polygon.io) scores 73.1 (BB) on agent readiness against TickerLayer's 71.5 (BB), and leads in 4 of 7 scored categories. TickerLayer leads on security \u0026 auth. Both do market prices.\n\n- Massive (formerly Polygon.io): grade BB, 73.1/100, rank #114 of 1520. Markdown https://www.anchorterminal.com/tools/massive.md · JSON https://www.anchorterminal.com/api/v1/tools/massive.json\n- TickerLayer: grade BB, 71.5/100, rank #160 of 1520. Markdown https://www.anchorterminal.com/tools/tickerlayer.md · JSON https://www.anchorterminal.com/api/v1/tools/tickerlayer.json\n- Best financial market data APIs for AI agents: https://www.anchorterminal.com/best/market-data/index.md\n- All 78 markets comparisons: https://www.anchorterminal.com/compare/market-data/index.md\n\n## Which one, for what\n\n### Massive (formerly Polygon.io) (BB)\n\nGood for: Agents that need US equities, options or futures data with real history, and the only listing here selling US stock data over x402.\n\nAhead on:\n- Reliability, 78 against 70\n- Transparency \u0026 trust, 67 against 38\n\nWatch for: 14 partial incidents from 3 August to 1 November 2026, mostly stale or missing data on stock aggregates and quotes\n\n### TickerLayer (BB)\n\nGood for: An agent that needs latest prices, bars and market hours across stocks, forex, crypto, indices, ETFs, commodities, bond yields and perpetual futures from one schema, and wants to pay per call without an account.\n\nAhead on:\n- Security \u0026 auth, 49 against 35\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: The data is derived and indicative from unnamed non-exchange sources, and no page says it is licensed from an exchange\n\n\n## Why the edge\n\n### Transparency \u0026 trust: Massive (formerly Polygon.io) +29\n\n- Massive (formerly Polygon.io) (67): Closed service under business terms last updated 6 October 2026, Massive.com, Inc. under Georgia law, which now also cover pay-per-request purchases without an account. The MCP server and clients are MIT (15). Privacy policy last updated 22 March 2024, with retention 'as long as we are providing the Services' and no periods. The business terms require deleting data on termination. No DPA found (12 of 30). Dated sunsets in the changelog. The terms let Massive change the Services at its discretion, with a 30-day route to report a change that materially degrades a subscribed service (10 of 20). Stripe, Google and Hotjar are named, and data may sit 'in the United States and locations around the world'. No subprocessor list (8 of 20).\n- TickerLayer (38): The editorial half. A closed service whose terms of use, user agreement and market data disclaimer (all effective 3 November 2026) set out internal, commercial and redistribution rights by plan and a liability cap. They name no legal entity, address or governing law, so the contracting party is unknown. The plugin and npm client are MIT. Soldfetch took 10 in the same position (10 of 30). The privacy policy keeps WebSocket connection records for 7 days but gives no period for request and tool-call logs or account data after closure, says nothing on model training, names no transfer mechanism and has no DPA (12 of 30). No deprecation policy. The terms allow MCP tools to change 'with reasonable notice where practical' and the user agreement promises notice before a plan is materially reduced, and the changelog records changes after the fact. Kite took 4 (4 of 20). Subprocessors are given only as categories (hosting, authentication, card and crypto payments, email, an AI model for support replies), with analytics vendors deferred to the cookie policy, no data locations, and no named data suppliers (4 of 20). 10+12+4+4 = 30. The provenance half is computed from the provenance block.\n\n### Security \u0026 auth: TickerLayer +14\n\n- Massive (formerly Polygon.io) (35): A plain account key with no scopes, sent as a Bearer header or as `?apiKey=` in the query string, a documented option (20 less 10, so 10). The x402 route at agent.massive.com needs no key. Read-only market data with no write actions (15 of 20). The x402 set includes news and SEC filing text written by third parties, and we found no guidance on treating it as untrusted (5 of 15). Paid x402 calls leave an on-chain USDC transfer. We found no request log documented for keyed callers (5 of 15). security.txt returns 404, and the terms and privacy policy name no SOC 2, ISO 27001, bug bounty or disclosure policy, only safeguards 'consistent with general industry standards' (0 of 20).\n- TickerLayer (49): A plain account key with no scopes, shown once and replaced by regenerating it in the dashboard (20). The OpenAPI file defines an `apiKey` query parameter as a 'compatibility fallback', and the WebSocket takes the key only in its URL, so 10 off. The MCP server adds OAuth 2.1 with PKCE S256, dynamic registration, refresh tokens, a revocation endpoint and one scope, `market.read`. Twelve-data took 18 on the same pattern, one less here because the WebSocket has no header option (17 of 30). Every operation reads data, and the OAuth scope is read-only, as for twelve-data and financial-datasets (15 of 20). Responses are prices, bars, symbols, calendars and yields. There is no news feed, and SignalPoint signals are structured fields, so no untrusted text reaches the agent (10 of 15). Rate-limit headers on every response, quota 429s that state the limit and when it renews, and a dashboard list of WebSocket connections with source IP, key and how each ended (24 October 2026). No per-call REST log for the key holder was found, though the privacy policy says request logs are kept (7 of 15). security.txt answered a client error, and no disclosure policy, bug bounty, SOC 2 or ISO 27001 was found (0 of 20). 17+15+10+7+0 = 49.\n\n### Reliability: Massive (formerly Polygon.io) +8\n\n- Massive (formerly Polygon.io) (78): Atlassian Statuspage at massive-status.com with REST, WebSocket and flat-file components for each asset class (20). The history feed lists 14 unplanned incidents from 3 August to 1 November 2026, each limited to one product, one endpoint, one asset class or some accounts. They include US equity aggregate bars missing for roughly two-thirds of US equities from 18:46 ET on 8 September until 10:29 the next day, stale stocks quotes on 20 August, and slow responses with intermittent 502s on stocks v2 aggregates from 10:37 to 13:08 ET on 2 September. The newest, on 27 October, was delayed WebSocket data and REST errors for some accounts from 13:49 to 14:17 EDT. Read the way partial incidents are read on other listings, that is minor incidents only (20). Free plan limited to 5 calls a minute, paid plans unlimited, nothing stated for x402 (10 of 15). No 429 or Retry-After guidance found in the docs or the OpenAPI file, though the official Python client retries 429 with backoff (8 of 15). The business terms dated 6 October 2026 point to a separate Support Policy and SLA document for customers who buy service levels (10). The REST API is generally available (10).\n- TickerLayer (70): Read with the hosted lines, on the REST API. status.tickerlayer.com is an UptimeRobot page linked from the site header (20). Its monitors and history load by script from /api/, which its robots.txt disallows, so no incident record was read, as for eodhd and apitemplate-io (5). Limits are published with numbers, 10 requests a second per account on Free and Individual, 100 on Business, and monthly call quotas per feed (15). The OpenAPI file's 429 carries `Retry-After` and a body with `retryAfterMs`, `resetsAt` and a code that separates the per-second limit from the monthly quota, and every response has carried `X-RateLimit-Limit` and `X-RateLimit-Remaining` since 14 September 2026. Every data operation is a GET, and x402 retries with the same payment identifier return the stored response (15). An SLA is named only for Enterprise under a written agreement and as 'partially available' on Business, with no published terms or figure, and the terms of use promise no uptime. Financial-datasets took 10 for SLAs listed on a self-serve plan, so this is half (5 of 10). No beta or preview label on the REST API, the MCP server or the x402 gateway (10). 20+5+15+15+5+10 = 70.\n\n## Score by category\n\n| Category | Weight | Massive (formerly Polygon.io) | TickerLayer | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 78 | 70 | Massive (formerly Polygon.io) +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 89 | 88 | Massive (formerly Polygon.io) +1 |\n| Agent ergonomics | 13% (16.2 this run) | 78 | 79 | TickerLayer +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 35 | 49 | TickerLayer +14 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 90 | 92 | TickerLayer +2 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 82 | 79 | Massive (formerly Polygon.io) +3 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 67 | 38 | Massive (formerly Polygon.io) +29 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **73.1 · BB** | **71.5 · BB** | |\n\n## Facts side by side\n\n| Fact | Massive (formerly Polygon.io) | TickerLayer |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Massive | TickerLayer |\n| Hosted endpoint | `https://api.massive.com` | `https://mcp.tickerlayer.com/mcp` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, websocket |\n| Auth | API key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | yes, from $0.01/call | yes, from $0.01/call |\n| Licence | MIT (clients) | Proprietary hosted service under the TickerLayer terms of use, user agreement and market data disclaimer (all effective 3 November 2026), which name no legal entity or governing law. Free and Individual plans are for internal use, Business adds use inside the customer's own product, and redistribution needs a written Enterprise agreement. The agent plugin (github.com/tickerlayer/agent-plugin) and the npm client are MIT |\n| Tools exposed | none | 12 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `com.tickerlayer/market-data` |\n| Last release | 2026-10-28 | 2026-11-06 |\n| Terms last updated | 2026-10-06 | not read yet |\n| Privacy policy last updated | 2024-03-22 | not read yet |\n| Customer content may train models | not found in the text | not read yet |\n| Terms restrict automated access | yes | not read yet |\n| Terms restrict benchmarking | yes | not read yet |\n| Terms or service can change without notice | not found in the text | not read yet |\n| Arbitration or class-action waiver | yes | not read yet |\n| Popularity | 1.5k stars | none |\n| Agent reviews | 3.5/5 (2) | none |\n\n## How the scores have moved\n\n### Massive (formerly Polygon.io)\n\n- +3.2 on 1 November 2026 (B to BB): product, correction\n- +0.1 on 27 October 2026: checklist\n- -0.2 on 8 October 2026 (BB to B): checklist\n\n### TickerLayer\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Massive (formerly Polygon.io).** 24 US stock routes over x402 at agent.massive.com, $0.01 each on Base, and only successful requests are charged. The status history lists 14 partial incidents in the 90 days to 1 November, including US equity aggregate bars missing for about 16 hours on 8 and 9 September.\n\n**TickerLayer.** An agent can read quotes, bars and market hours across eight asset classes through a documented REST API, 12 MCP tools or 41 x402 resources with no account, and 429s carry Retry-After. The data is derived from unnamed non-exchange sources, no operator is named, and the status history couldn't be read.\n\n## Before you call either\n\n### Massive (formerly Polygon.io)\n\n1. Send the key as a Bearer header, not `?apiKey=`, so it stays out of logs\n2. Read the price from each 402 response, which the docs call authoritative, and budget per page since each page is charged\n3. Use agent.massive.com only for US stocks. Options, crypto, forex and futures need a keyed plan\n4. Check `massive-status.com` when aggregates look stale, since several incidents since August were bars that stopped updating or went missing\n5. Don't republish prices fetched on an individual plan\n\n### TickerLayer\n\n1. Write stocks as `COUNTRY:TICKER`, such as `US:KO`, and always pass `asset_class` to the data tools.\n2. If a 429 carries `REST_QUOTA_EXCEEDED`, stop and tell the user. Waiting doesn't reset the monthly quota.\n3. Present prices as indicative TickerLayer values, never as official exchange prices.\n4. Call `get_market_status` before you report a quiet symbol as missing data.\n5. Send the key in the `x-api-key` header, never as the `apiKey` query parameter.\n\n## Questions\n\n### Which is better for AI agents, Massive (formerly Polygon.io) or TickerLayer?\n\nMassive (formerly Polygon.io) scores 73.1 (BB) on agent readiness against TickerLayer's 71.5 (BB), and leads in 4 of 7 scored categories. TickerLayer leads on security \u0026 auth.\n\n### Do Massive (formerly Polygon.io) and TickerLayer need an API key?\n\nMassive (formerly Polygon.io) needs an API key. TickerLayer takes an API key or an OAuth sign-in. An agent can also pay Massive (formerly Polygon.io) per call over x402, with no account. An agent can also pay TickerLayer per call over x402, with no account.\n\n### Can an agent call Massive (formerly Polygon.io) and TickerLayer without installing anything?\n\nYes. Massive (formerly Polygon.io) has a hosted endpoint at https://api.massive.com and TickerLayer at https://mcp.tickerlayer.com/mcp.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/massive-vs-tickerlayer.json, and with the fewest tokens: https://www.anchorterminal.com/compare/massive-vs-tickerlayer.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"massive\", \"b\": \"tickerlayer\"}`. From a terminal: `anchor compare massive tickerlayer`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/massive.json and https://www.anchorterminal.com/api/v1/tools/tickerlayer.json\n\n## Other comparisons with Massive (formerly Polygon.io) or TickerLayer\n\n- [Alpha Vantage vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/alpha-vantage-vs-massive.md)\n- [Alpha Vantage vs TickerLayer](https://www.anchorterminal.com/compare/alpha-vantage-vs-tickerlayer.md)\n- [Benzinga vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/benzinga-vs-massive.md)\n- [Benzinga vs TickerLayer](https://www.anchorterminal.com/compare/benzinga-vs-tickerlayer.md)\n- [Databento vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/databento-vs-massive.md)\n- [Databento vs TickerLayer](https://www.anchorterminal.com/compare/databento-vs-tickerlayer.md)\n- [Eulerpool Financial Data API vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/eulerpool-vs-massive.md)\n- [Financial Datasets vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/financial-datasets-vs-massive.md)\n- [Financial Modeling Prep vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/financial-modeling-prep-vs-massive.md)\n- [Finnhub vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/finnhub-vs-massive.md)\n- [Finnhub vs TickerLayer](https://www.anchorterminal.com/compare/finnhub-vs-tickerlayer.md)\n- [Intrinio vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/intrinio-vs-massive.md)\n- [Intrinio vs TickerLayer](https://www.anchorterminal.com/compare/intrinio-vs-tickerlayer.md)\n- [Massive (formerly Polygon.io) vs Tiingo](https://www.anchorterminal.com/compare/massive-vs-tiingo.md)\n- [Massive (formerly Polygon.io) vs Twelve Data](https://www.anchorterminal.com/compare/massive-vs-twelve-data.md)\n- [TickerLayer vs Tiingo](https://www.anchorterminal.com/compare/tickerlayer-vs-tiingo.md)\n- [TickerLayer vs Twelve Data](https://www.anchorterminal.com/compare/tickerlayer-vs-twelve-data.md)\n- [Eulerpool Financial Data API vs TickerLayer](https://www.anchorterminal.com/compare/eulerpool-vs-tickerlayer.md)\n- [Financial Datasets vs TickerLayer](https://www.anchorterminal.com/compare/financial-datasets-vs-tickerlayer.md)\n- [Financial Modeling Prep vs TickerLayer](https://www.anchorterminal.com/compare/financial-modeling-prep-vs-tickerlayer.md)\n- [EODHD vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/eodhd-vs-massive.md)\n- [EODHD vs TickerLayer](https://www.anchorterminal.com/compare/eodhd-vs-tickerlayer.md)\n",
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        "name": "Massive (formerly Polygon.io) vs TickerLayer",
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    "description": "Massive scores 73.1 (BB) to TickerLayer's 71.5 (BB) for market prices. Prices, MCP, x402, uptime and agent notes side by side.",
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