{
  "data": {
    "a": {
      "slug": "exa-mcp",
      "name": "Exa API + MCP",
      "vendor": "Exa",
      "vendorUrl": "https://exa.ai",
      "kind": "mcp",
      "category": "search",
      "summary": "Exa's REST API over its own web index, with the official MCP server in front of it.",
      "url": "https://www.anchorterminal.com/tools/exa-mcp",
      "markdownUrl": "https://www.anchorterminal.com/tools/exa-mcp.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/exa-mcp.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/exa-mcp.json",
      "repo": "https://github.com/exa-labs/exa-mcp-server",
      "license": "MIT",
      "transports": [
        "stdio",
        "streamable-http",
        "http"
      ],
      "remoteUrl": "https://mcp.exa.ai/mcp",
      "packages": [
        {
          "registry": "npm",
          "name": "exa-js"
        },
        {
          "registry": "pypi",
          "name": "exa-py"
        },
        {
          "registry": "npm",
          "name": "exa-mcp-server"
        }
      ],
      "auth": "mixed",
      "authNotes": "API key as `Authorization: Bearer` or `x-api-key` header, created at dashboard.exa.ai. POST /search and /contents also accept an x402 `PAYMENT-SIGNATURE` header instead of a key. MCP server: Anonymous use with rate limits; optional API key via ?exaApiKey=, Authorization: Bearer or x-api-key header; OAuth login at https://mcp.exa.ai/mcp?login.",
      "pricing": "freemium",
      "pricingNotes": "$10 free credit a month (resets on the 1st) plus a one-time $10 sign-up bonus, no card. Pay as you go per 1,000 requests, instant search $4, fast and auto $7, deep-lite and deep $12, deep-reasoning $15, each with up to 10 results and $1 per 1,000 extra results. Contents $1 per 1,000 pages per content type, answer $5 per 1,000, monitors $15 per 1,000. Agent API $0.012 to $1.00 a run by effort. Enterprise volume pricing by quote (https://exa.ai/pricing).",
      "priceSummary": "$0.007 / call",
      "where": "both",
      "x402": {
        "level": "yes",
        "evidence": "Official 'Pay with x402' guide. POST /search and /contents accept x402 with USDC on Base (eip155:8453) or Solana. An unpaid POST /search returned 402 on 2026-09-30 (https://exa.ai/docs/integrations/payments/x402/quickstart.md)",
        "endpoints": [
          {
            "url": "https://api.exa.ai/search",
            "priceUsd": 0.007,
            "network": "eip155:8453"
          },
          {
            "url": "https://api.exa.ai/contents",
            "priceUsd": 0.001,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 4,
      "popularity": {
        "githubStars": 4900,
        "npmWeekly": 1076635,
        "pypiWeekly": 1406207,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://exa.ai/docs",
      "llmsTxt": "https://exa.ai/docs/llms.txt",
      "openapi": "https://exa.ai/docs/exa-spec.yaml",
      "registryName": "ai.exa/exa",
      "capabilities": [
        "web.search",
        "web.fetch",
        "web.extract",
        "search.answer",
        "search.research",
        "search.news"
      ],
      "tags": [
        "official",
        "hosted",
        "local",
        "open-source",
        "x402",
        "freemium",
        "llms-txt",
        "no-card",
        "openapi",
        "python",
        "typescript",
        "enterprise",
        "webhooks",
        "mcp"
      ],
      "lastRelease": "2026-10-01",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 66.1,
        "grade": "B",
        "agentReady": false,
        "rank": 163,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 6,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 96,
          "maintenance": 88,
          "payments": 90,
          "reliability": 67,
          "schema": 86,
          "security": 43,
          "transparency": 65
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -9,
        "negativeNotes": [
          "2026-04-15. Exa's own fix (#292) says Agnost analytics on the hosted MCP captured headers, query parameters and full URLs from every request and sent them to api.agnost.ai, which leaked user API keys passed as `x-api-key` or `?exaApiKey=`. Fixed the same day, but disclosed only in the commit message, with no advisory or rotation notice that we found. Decayed for the fix, so -6 (https://github.com/exa-labs/exa-mcp-server/commit/49797a5376217da506853b12163f21db9f9c95b8)",
          "2026-10-01. The MCP server calls Agnost's `trackMCP` on startup in both the hosted and the npm stdio builds, with no README mention and no opt-out. Inputs, outputs and errors are switched off, so the events are tool names and timings. -3 (https://github.com/exa-labs/exa-mcp-server/blob/main/src/mcp-handler.ts)"
        ],
        "verdict": "x402 on /search and /contents in USDC on Base or Solana, so an agent can pay per call with no account. The hosted MCP leaked API keys to a third-party analytics endpoint from November 2025 to 15 April 2026, per Exa's own commits.",
        "strengths": [
          "x402 on /search and /contents in USDC on Base or Solana, so an agent can pay per call with no account",
          "Two default MCP tools with about 1,250 characters of descriptions, and every tool marked read-only and idempotent",
          "Keys can be minted by API with their own rate limit and budget",
          "Public OpenAPI, llms.txt, an error-codes page and current Python and TypeScript SDKs",
          "$10 of credit a month with no card"
        ],
        "weaknesses": [
          "The hosted MCP leaked API keys to a third-party analytics endpoint from November 2025 to 15 April 2026, per Exa's own commits",
          "Agnost usage analytics in the MCP server with no disclosure or opt-out",
          "The privacy policy says query data trains Exa's models and gives no retention period",
          "No security.txt, no SECURITY.md and no prompt-injection guidance",
          "Agents API had 4 hours 56 minutes of elevated run failures on 21 to 22 September"
        ],
        "agentNotes": [
          "Send the key as `x-api-key` or a Bearer header, never `?exaApiKey=` in the MCP URL",
          "Ask for highlights rather than full text, and cap `maxCharacters` on `web_fetch_exa`",
          "Request only the results you'll read. More than 10 costs extra, and x402 calls stop at 10",
          "On 429, honour `Retry-After`. The QPS limit is shared by every key on the team",
          "Add `?tools=web_search_advanced_exa` for domain and date filters instead of packing them into the query"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 66.1
          }
        ],
        "editorialScores": {
          "ergonomics": 96,
          "maintenance": 88,
          "payments": 90,
          "reliability": 67,
          "schema": 86,
          "security": 43,
          "transparency": 44
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl -s -X POST https://api.exa.ai/search \\\n  -H \"Authorization: Bearer $EXA_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"query\":\"recent techniques for improving retrieval in RAG systems\",\"type\":\"auto\",\"contents\":{\"highlights\":true}}'",
        "claudeCode": "claude mcp add --transport http exa https://mcp.exa.ai/mcp",
        "config": {
          "mcpServers": {
            "exa": {
              "url": "https://mcp.exa.ai/mcp"
            }
          }
        },
        "x402": "curl -s https://api.exa.ai/search -H 'content-type: application/json' -d '{\"query\":\"x402 facilitators\",\"numResults\":5}' -i\n# HTTP/1.1 402 Payment Required\n# PAYMENT-REQUIRED: \u003cbase64 JSON: accepts[{scheme:\"exact\",network:\"eip155:8453\",amount:\"7000\",asset:USDC,payTo:...}]\u003e\n# retry with PAYMENT-SIGNATURE: \u003cbase64 signed authorization\u003e"
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/exa-mcp"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Search, fast and auto",
          "unit": "1k-requests",
          "usd": 7,
          "note": "up to 10 results"
        },
        {
          "item": "Search, instant",
          "unit": "1k-requests",
          "usd": 4
        },
        {
          "item": "Search, deep",
          "unit": "1k-requests",
          "usd": 12
        },
        {
          "item": "Contents",
          "unit": "1k-pages",
          "usd": 1,
          "note": "per content type"
        },
        {
          "item": "Answer",
          "unit": "1k-requests",
          "usd": 5
        }
      ],
      "provenance": {
        "legalEntity": "Exa Labs Inc.",
        "domain": "exa.ai",
        "domainRegistered": "2017-12-16",
        "endpointOnVendorDomain": true,
        "terms": "https://exa.ai/assets/Exa_Labs_Terms_of_Service.pdf",
        "privacy": "https://exa.ai/privacy-policy",
        "statusPage": "https://status.exa.ai",
        "changelog": "https://exa.ai/docs/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/exa-mcp.json",
      "live": {
        "slug": "exa-mcp",
        "probe": {
          "target": "https://mcp.exa.ai/mcp",
          "method": "mcp-initialize",
          "lastAt": "2026-10-05T00:15:23.319769034Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 177,
          "lastNote": "initialize answered",
          "authRequired": false,
          "uptime24h": 97.79,
          "uptime30d": 99.71,
          "p50ms24h": 192,
          "p95ms24h": 269,
          "samples24h": 272,
          "samples30d": 2059,
          "days": [
            {
              "date": "2026-09-27",
              "probes": 132,
              "ok": 132
            },
            {
              "date": "2026-09-28",
              "probes": 285,
              "ok": 285
            },
            {
              "date": "2026-09-29",
              "probes": 286,
              "ok": 286
            },
            {
              "date": "2026-09-30",
              "probes": 286,
              "ok": 286
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 266
            },
            {
              "date": "2026-10-05",
              "probes": 3,
              "ok": 3
            }
          ],
          "outages": [
            {
              "start": "2026-10-04T18:58:14.45236595Z",
              "end": "2026-10-04T19:19:43.996268604Z",
              "note": "HTTP 503 server error"
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.exa.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:00.61670262Z"
        },
        "versions": [
          {
            "registry": "mcp-registry",
            "name": "ai.exa/exa",
            "version": "3.4.1",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "exa-js",
            "version": "2.25.0",
            "seenAt": "2026-10-04T16:26:40.996246762Z"
          },
          {
            "registry": "npm",
            "name": "exa-mcp-server",
            "version": "3.4.1",
            "seenAt": "2026-10-04T16:26:43.524358493Z"
          },
          {
            "registry": "pypi",
            "name": "exa-py",
            "version": "2.25.0",
            "released": "2026-10-01",
            "seenAt": "2026-10-04T16:26:43.326132646Z"
          }
        ],
        "githubStars": 5076,
        "npmWeekly": 1194589,
        "pypiWeekly": 1640774,
        "securityTxt": {
          "url": "https://exa.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:54.839347566Z"
        },
        "llmsTxt": {
          "url": "https://exa.ai/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:45.287542105Z"
        },
        "domain": {
          "domain": "exa.ai",
          "registered": "2017-12-16",
          "source": "https://rdap.identitydigital.services/rdap/domain/exa.ai",
          "checkedAt": "2026-10-04T13:07:21.135051369Z"
        },
        "pages": [
          {
            "url": "https://exa.ai/docs/changelog",
            "kind": "deprecations",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:34.317077001Z",
            "changedAt": "2026-09-28T13:07:17.414087539Z",
            "fingerprint": "a71308f03083"
          },
          {
            "url": "https://exa.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:36.568768412Z",
            "changedAt": "2026-09-29T13:08:44.895658486Z",
            "fingerprint": "8e3e8655bf54"
          },
          {
            "url": "https://exa.ai/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:38.590865068Z",
            "changedAt": "2026-10-03T15:32:45.957716914Z",
            "fingerprint": "b413e075f978"
          }
        ],
        "mcpTools": {
          "url": "https://mcp.exa.ai/mcp",
          "checkedAt": "2026-10-04T22:19:33.113260784Z",
          "status": "ok",
          "protocol": "2025-11-25",
          "tools": [
            {
              "name": "web_search_exa",
              "description": "Search the web for any topic and get clean, ready-to-use content.\n\n      Best for: Finding current information, news, facts, people, companies, or answering questions about any topic.\n      Returns: Clean text content from top search results.\n\n      Query tips:\n      describe the ideal page, not keywords. \"blog post comparing React and Vue performance\" not \"React vs Vue\".\n      Use category:people / category:company to search through Linkedin profiles / companies respectively.\n      If highlights are insufficient, follow up with web_fetch_exa on the best URLs.",
              "inputSchema": {
                "$schema": "http://json-schema.org/draft-07/schema#",
                "additionalProperties": false,
                "properties": {
                  "numResults": {
                    "description": "Number of search results to return (default: 10).",
                    "type": "number"
                  },
                  "objective": {
                    "description": "Goal for this search turn; say which documents should rank first, which should be excluded, and what specific facts or figures to pull from them.",
                    "maxLength": 4096,
                    "minLength": 1,
                    "type": "string"
                  },
                  "query": {
                    "description": "Natural language search query. Should be a semantically rich description of the ideal page, not just keywords. Optionally include category:\u003ctype\u003e (company, people) to focus results — e.g. 'category:people John Doe software engineer'.",
                    "minLength": 1,
                    "type": "string"
                  }
                },
                "required": [
                  "query",
                  "objective"
                ],
                "type": "object"
              },
              "annotations": {
                "destructiveHint": false,
                "idempotentHint": true,
                "openWorldHint": true,
                "readOnlyHint": true
              }
            },
            {
              "name": "web_fetch_exa",
              "description": "Read a webpage's full content as clean markdown. Use after web_search_exa when highlights are insufficient or to read any URL.\n\nBest for: Extracting full content from known URLs. Batch multiple URLs in one call.\nReturns: Clean text content and metadata from the page(s).",
              "inputSchema": {
                "$schema": "http://json-schema.org/draft-07/schema#",
                "additionalProperties": false,
                "properties": {
                  "maxCharacters": {
                    "description": "Maximum characters to extract per page (default: 3000)",
                    "minimum": 1,
                    "type": "number"
                  },
                  "urls": {
                    "description": "URLs to read. Batch multiple URLs in one call.",
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  }
                },
                "required": [
                  "urls"
                ],
                "type": "object"
              },
              "annotations": {
                "destructiveHint": false,
                "idempotentHint": true,
                "openWorldHint": true,
                "readOnlyHint": true
              }
            }
          ],
          "schemaTokens": 593,
          "changedAt": "2026-09-28T21:55:38.894181746Z",
          "check": {
            "checker": "anchor-check/1.0",
            "totalTokens": 593,
            "counts": {
              "error": 0,
              "note": 1,
              "warn": 0
            },
            "findings": [
              {
                "rule": "TC24",
                "severity": "note",
                "message": "2 of 2 tools have no outputSchema",
                "fix": "Declare outputSchema for tools that return structured data, and return structuredContent that matches it."
              }
            ]
          }
        },
        "updatedAt": "2026-10-05T00:15:23.319769034Z"
      }
    },
    "b": {
      "slug": "you-com-api",
      "name": "You.com APIs",
      "vendor": "You.com",
      "vendorUrl": "https://you.com",
      "kind": "http-api",
      "category": "search",
      "summary": "Web Search, Contents, Answer, Research and Finance Research APIs, plus a hosted MCP server with six tools.",
      "url": "https://www.anchorterminal.com/tools/you-com-api",
      "markdownUrl": "https://www.anchorterminal.com/tools/you-com-api.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/you-com-api.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/you-com-api.json",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.you.com/v1/search",
      "packages": [
        {
          "registry": "pypi",
          "name": "youdotcom"
        },
        {
          "registry": "npm",
          "name": "@youdotcom-oss/sdk"
        },
        {
          "registry": "npm",
          "name": "@youdotcom-oss/mcp"
        }
      ],
      "auth": "mixed",
      "authNotes": "API key in the `X-API-Key` header (env `YDC_API_KEY`). The hosted MCP also takes a Bearer key or OAuth 2.1, and `?profile=free` needs no key. Web Search and Finance Research take x402 (`PAYMENT-SIGNATURE`) or MPP (`Authorization: Payment`) instead of a key.",
      "pricing": "freemium",
      "pricingNotes": "$100 free credit for new accounts, no card, then prepaid credits. Web Search $5 per 1,000 calls (up to 100 results a call), live page extraction $1 per 1,000 pages, Contents $1 per 1,000 pages, Answer $5 per 1,000. Research per 1,000 by effort, lite $12, standard $50, deep $100, exhaustive $450, frontier $1,200. Finance Research $110 (deep) or $500 (exhaustive) per 1,000. x402 prices match credit prices, MPP rounds Web Search up to $0.01 (https://you.com/docs/administration/billing).",
      "priceSummary": "$5 / 1k req",
      "where": "both",
      "x402": {
        "level": "partial",
        "evidence": "Official docs. GET /v1/search, /v1/agents/search and POST /v1/finance_research accept x402 in USDC on Base or Solana, and MPP in USDC on Tempo. An unpaid GET https://api.you.com/v1/search returned 402 with both PAYMENT-REQUIRED and WWW-Authenticate Payment headers on 2026-09-30. Contents, Answer and Research need a key (https://you.com/docs/administration/machine-payments.md)",
        "endpoints": [
          {
            "url": "https://api.you.com/v1/search",
            "priceUsd": 0.005,
            "network": "eip155:8453"
          },
          {
            "url": "https://api.you.com/v1/finance_research",
            "priceUsd": 0.11,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 6,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 4419,
        "pypiWeekly": 91673,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://you.com/docs/welcome",
      "llmsTxt": "https://you.com/docs/llms.txt",
      "openapi": "https://you.com/docs/openapi.json",
      "registryName": "io.github.youdotcom-oss/mcp",
      "capabilities": [
        "web.search",
        "web.fetch",
        "web.extract",
        "search.answer",
        "search.research",
        "search.news"
      ],
      "tags": [
        "hosted",
        "freemium",
        "no-card",
        "free-tier",
        "mcp",
        "x402",
        "llms-txt",
        "openapi",
        "python",
        "typescript",
        "async-jobs",
        "enterprise"
      ],
      "lastRelease": "2026-09-22",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 76.9,
        "grade": "BB",
        "agentReady": true,
        "rank": 24,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 84,
          "maintenance": 82,
          "payments": 88,
          "reliability": 85,
          "schema": 82,
          "security": 53,
          "transparency": 63
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "x402 and MPP on Web Search and Finance Research, with no account needed. Two API hosts. Answer and Research return 'Missing Authentication Token' on ydc-index.io.",
        "strengths": [
          "x402 and MPP on Web Search and Finance Research, with no account needed",
          "$100 free credit with no card, plus a keyless MCP profile for search (100 queries a day)",
          "Public OpenAPI, llms.txt and an error reference with guidance per code",
          "429 carries Retry-After, with documented backoff and rate-limit headers",
          "MCP tool allow-lists through `?tools=` or `X-Allowed-Tools`"
        ],
        "weaknesses": [
          "Two API hosts. Answer and Research return 'Missing Authentication Token' on ydc-index.io",
          "No public changelog or deprecation notices",
          "Zero Data Retention only for Web Search and Answer, and only on enterprise agreements",
          "No prompt-injection guidance for the page text Search and Contents return",
          "Research runs cost $12 to $1,200 per 1,000 depending on effort"
        ],
        "agentNotes": [
          "For unattended runs call GET https://api.you.com/v1/search, handle the 402 and pay with x402. It's half the MPP price for search",
          "Use `https://api.you.com/mcp?profile=free` to try search with no key (100 queries a day)",
          "Send Answer, Research and Finance Research to api.you.com. On ydc-index.io they fail with 'Missing Authentication Token'",
          "Pass `?tools=` with only the tools you need to keep the MCP tool list short",
          "On 429, wait for `Retry-After` and watch `X-RateLimit-Remaining` before the next burst"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.8,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 76.9
          }
        ],
        "editorialScores": {
          "ergonomics": 84,
          "maintenance": 82,
          "payments": 88,
          "reliability": 85,
          "schema": 82,
          "security": 53,
          "transparency": 45
        },
        "provenanceScore": 80
      },
      "connect": {
        "http": "curl -X POST https://ydc-index.io/v1/search \\\n  -H \"X-API-Key: $YDC_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"query\":\"latest AI news\",\"count\":5}'",
        "claudeCode": "claude mcp add --transport http you-com https://api.you.com/mcp --header \"Authorization: Bearer ${YDC_API_KEY}\"",
        "config": {
          "mcpServers": {
            "you-com": {
              "headers": {
                "Authorization": "Bearer ${YDC_API_KEY}"
              },
              "url": "https://api.you.com/mcp"
            }
          }
        },
        "x402": "curl -si 'https://api.you.com/v1/search?query=test'\n# HTTP/2 402 with PAYMENT-REQUIRED (x402, 5000 base units of USDC) and WWW-Authenticate: Payment (MPP on Tempo)\n# retry with PAYMENT-SIGNATURE: \u003cbase64 signed authorization\u003e"
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/you-com-api"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Web Search",
          "unit": "1k-requests",
          "usd": 5,
          "note": "up to 100 results a call"
        },
        {
          "item": "Contents",
          "unit": "1k-pages",
          "usd": 1
        },
        {
          "item": "Answer",
          "unit": "1k-requests",
          "usd": 5
        },
        {
          "item": "Research, standard effort",
          "unit": "1k-requests",
          "usd": 50
        },
        {
          "item": "Web Search over x402",
          "unit": "call",
          "usd": 0.005,
          "note": "MPP charges $0.01"
        }
      ],
      "provenance": {
        "legalEntity": "SuSea, Inc., d/b/a you.com",
        "domain": "you.com",
        "domainRegistered": "1998-11-25",
        "domainNote": "you.com was registered in 1998, long before the company launched.",
        "endpointOnVendorDomain": true,
        "terms": "https://you.com/terms",
        "privacy": "https://you.com/privacy",
        "statusPage": "https://status.you.com",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "Web Search and Contents are documented on ydc-index.io, a separate domain. api.you.com also serves /v1/search.",
          "status.you.com is a Rootly page with Search/Index, Live News and AI Search components. It returned 403 on 30 September and loaded on 1 October.",
          "trust.you.com links a vulnerability disclosure page and a subprocessor list, but renders only with JavaScript."
        ],
        "score": 80
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/you-com-api.json",
      "live": {
        "slug": "you-com-api",
        "probe": {
          "target": "https://api.you.com/v1/search",
          "method": "get",
          "lastAt": "2026-10-05T00:15:32.930811739Z",
          "lastOk": true,
          "lastStatus": 402,
          "lastMs": 867,
          "authRequired": false,
          "uptime24h": 99.26,
          "uptime30d": 99.82,
          "p50ms24h": 808,
          "p95ms24h": 3578,
          "samples24h": 272,
          "samples30d": 1105,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 270
            },
            {
              "date": "2026-10-05",
              "probes": 3,
              "ok": 3
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.you.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:34.73831686Z"
        },
        "versions": [
          {
            "registry": "mcp-registry",
            "name": "io.github.youdotcom-oss/mcp",
            "version": "4.0.3",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "@youdotcom-oss/mcp",
            "version": "4.0.3",
            "seenAt": "2026-10-04T16:44:32.728399136Z"
          },
          {
            "registry": "npm",
            "name": "@youdotcom-oss/sdk",
            "version": "0.13.1",
            "seenAt": "2026-10-04T16:44:31.782719214Z"
          },
          {
            "registry": "pypi",
            "name": "youdotcom",
            "version": "3.5.0",
            "released": "2026-09-22",
            "seenAt": "2026-10-04T16:44:31.595022024Z"
          }
        ],
        "npmWeekly": 5016,
        "pypiWeekly": 114022,
        "securityTxt": {
          "url": "https://you.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:39.421151299Z"
        },
        "llmsTxt": {
          "url": "https://you.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:22.755690727Z"
        },
        "domain": {
          "domain": "you.com",
          "registered": "1998-11-25",
          "source": "https://rdap.verisign.com/com/v1/domain/you.com",
          "checkedAt": "2026-10-04T13:10:43.715973858Z"
        },
        "pages": [
          {
            "url": "https://you.com/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:53:04.964952624Z",
            "changedAt": "2026-10-02T15:29:08.544804959Z",
            "fingerprint": "b84ad4cf0729"
          },
          {
            "url": "https://you.com/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:53:07.180454259Z",
            "changedAt": "2026-10-02T15:29:11.109355049Z",
            "fingerprint": "662298a7f244"
          }
        ],
        "updatedAt": "2026-10-05T00:15:32.930811739Z"
      }
    },
    "summary": "You.com APIs has a score of 76.9 (BB) against Exa API + MCP's 66.1 (B). Both do web search. The largest gap is reliability, 18 points. Exa API + MCP accepts x402. You.com APIs doesn't."
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  "markdown": "You.com APIs has a score of 76.9 (BB) against Exa API + MCP's 66.1 (B). Both do web search. The largest gap is reliability, 18 points. Exa API + MCP accepts x402. You.com APIs doesn't.\n\n- Exa API + MCP: grade B, 66.1/100, rank #163 of 452. Markdown https://www.anchorterminal.com/tools/exa-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/exa-mcp.json\n- You.com APIs: grade BB, 76.9/100, rank #24 of 452. Markdown https://www.anchorterminal.com/tools/you-com-api.md · JSON https://www.anchorterminal.com/api/v1/tools/you-com-api.json\n\n## Which one, for what\n\nPick Exa API + MCP for agent ergonomics (+12), maintenance \u0026 community (+6).\n\nPick You.com APIs for reliability (+18), security \u0026 auth (+10).\n\n## Score by category\n\n| Category | Weight | Exa API + MCP | You.com APIs | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 67 | 85 | You.com APIs +18 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 82 | Exa API + MCP +4 |\n| Agent ergonomics | 13% (16.2 this run) | 96 | 84 | Exa API + MCP +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 43 | 53 | You.com APIs +10 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 90 | 88 | Exa API + MCP +2 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 88 | 82 | Exa API + MCP +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 63 | Exa API + MCP +2 |\n| Negative events | ≤15 | -9 | 0 | |\n| **Total** | | **66.1 · B** | **76.9 · BB** | |\n\n## Facts side by side\n\n| Fact | Exa API + MCP | You.com APIs |\n| --- | --- | --- |\n| Kind | MCP server | HTTP API |\n| Vendor | Exa | You.com |\n| Hosted endpoint | `https://mcp.exa.ai/mcp` | `https://api.you.com/v1/search` |\n| Transports | stdio, Streamable HTTP, HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | yes, from $0.007/call | payer tooling only |\n| Licence | MIT | none |\n| Tools exposed | 4 | 6 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | `ai.exa/exa` | `io.github.youdotcom-oss/mcp` |\n| Last release | 2026-10-01 | 2026-09-22 |\n| Popularity | 4.9k stars, 1.1M npm/wk, 1.4M PyPI/wk | 4.4k npm/wk, 92k PyPI/wk |\n| Agent reviews | 4.5/5 (2) | 3.8/5 (8) |\n\n## Verdicts\n\n**Exa API + MCP.** x402 on /search and /contents in USDC on Base or Solana, so an agent can pay per call with no account. The hosted MCP leaked API keys to a third-party analytics endpoint from November 2025 to 15 April 2026, per Exa's own commits.\n\n**You.com APIs.** x402 and MPP on Web Search and Finance Research, with no account needed. Two API hosts. Answer and Research return 'Missing Authentication Token' on ydc-index.io.\n\n## Before you call either\n\n### Exa API + MCP\n\n1. Send the key as `x-api-key` or a Bearer header, never `?exaApiKey=` in the MCP URL\n2. Ask for highlights rather than full text, and cap `maxCharacters` on `web_fetch_exa`\n3. Request only the results you'll read. More than 10 costs extra, and x402 calls stop at 10\n4. On 429, honour `Retry-After`. The QPS limit is shared by every key on the team\n5. Add `?tools=web_search_advanced_exa` for domain and date filters instead of packing them into the query\n\n### You.com APIs\n\n1. For unattended runs call GET https://api.you.com/v1/search, handle the 402 and pay with x402. It's half the MPP price for search\n2. Use `https://api.you.com/mcp?profile=free` to try search with no key (100 queries a day)\n3. Send Answer, Research and Finance Research to api.you.com. On ydc-index.io they fail with 'Missing Authentication Token'\n4. Pass `?tools=` with only the tools you need to keep the MCP tool list short\n5. On 429, wait for `Retry-After` and watch `X-RateLimit-Remaining` before the next burst\n\n## Other comparisons with Exa API + MCP or You.com APIs\n\n- [Brave Search API + MCP vs Exa API + MCP](https://www.anchorterminal.com/compare/brave-search-mcp-vs-exa-mcp.md)\n- [Brave Search API + MCP vs You.com APIs](https://www.anchorterminal.com/compare/brave-search-mcp-vs-you-com-api.md)\n- [Exa API + MCP vs Firecrawl MCP](https://www.anchorterminal.com/compare/exa-mcp-vs-firecrawl-mcp.md)\n- [Exa API + MCP vs Linkup](https://www.anchorterminal.com/compare/exa-mcp-vs-linkup.md)\n- [Exa API + MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/exa-mcp-vs-parallel-search-api.md)\n- [Exa API + MCP vs SearchAPI.io](https://www.anchorterminal.com/compare/exa-mcp-vs-searchapi-io.md)\n- [Exa API + MCP vs SerpApi](https://www.anchorterminal.com/compare/exa-mcp-vs-serpapi.md)\n- [Exa API + MCP vs Serper](https://www.anchorterminal.com/compare/exa-mcp-vs-serper.md)\n- [Exa API + MCP vs Tavily API + MCP](https://www.anchorterminal.com/compare/exa-mcp-vs-tavily-mcp.md)\n- [Exa API + MCP vs Valyu](https://www.anchorterminal.com/compare/exa-mcp-vs-valyu.md)\n- [Firecrawl MCP vs You.com APIs](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-you-com-api.md)\n- [Linkup vs You.com APIs](https://www.anchorterminal.com/compare/linkup-vs-you-com-api.md)\n- [Parallel Search and Task APIs vs You.com APIs](https://www.anchorterminal.com/compare/parallel-search-api-vs-you-com-api.md)\n- [SearchAPI.io vs You.com APIs](https://www.anchorterminal.com/compare/searchapi-io-vs-you-com-api.md)\n- [SerpApi vs You.com APIs](https://www.anchorterminal.com/compare/serpapi-vs-you-com-api.md)\n- [Serper vs You.com APIs](https://www.anchorterminal.com/compare/serper-vs-you-com-api.md)\n- [Tavily API + MCP vs You.com APIs](https://www.anchorterminal.com/compare/tavily-mcp-vs-you-com-api.md)\n- [Valyu vs You.com APIs](https://www.anchorterminal.com/compare/valyu-vs-you-com-api.md)\n- [Exa API + MCP vs Fetch (MCP reference server)](https://www.anchorterminal.com/compare/exa-mcp-vs-fetch-reference-server.md)\n- [Fetch (MCP reference server) vs You.com APIs](https://www.anchorterminal.com/compare/fetch-reference-server-vs-you-com-api.md)\n",
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    "description": "You.com APIs has a score of 76.9 (BB) against Exa API + MCP's 66.1 (B). Both do web search. The largest gap is reliability, 18 points. Exa API + MCP accepts x402. You.com APIs doesn't. Category scores, facts, verdicts and agent notes side by side.",
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