{ "data": { "a": { "slug": "financial-datasets", "name": "Financial Datasets", "vendor": "Financial Datasets, Inc.", "vendorUrl": "https://www.financialdatasets.ai", "kind": "http-api", "category": "market-data", "summary": "Financial Datasets is a stock market data API built for AI agents, with financial statements, SEC filings, earnings, insider and institutional holdings, prices, news and macro series for 27,000 US tickers, through REST, x402 and a hosted MCP server.", "url": "https://www.anchorterminal.com/tools/financial-datasets", "markdownUrl": "https://www.anchorterminal.com/tools/financial-datasets.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/financial-datasets.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/financial-datasets.json", "dns": "financial-datasets.grade.anchorterminal.com", "repo": "https://github.com/financial-datasets", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.financialdatasets.ai", "packages": [ { "registry": "pypi", "name": "financial-datasets" } ], "auth": "mixed", "authNotes": "API key in the `X-API-KEY` header, minted in the dashboard or by `POST /agent/signup` with an email and agent name, shown once. Any documented GET data endpoint also accepts x402 payment with no key. The hosted MCP server uses OAuth 2 with PKCE, dynamic client registration, a revocation endpoint and one scope, `stock-market-data`, or an `X-API-KEY` header on its /api endpoint. Keys are revoked from the dashboard; no rotation or expiry documented.", "pricing": "usage", "pricingNotes": "Credits at $20 for 1,000 requests, one-off, personal licence, one year of price history. Personal $200 a month for 100,000 requests (overage $10 per 1,000, cap 1 million). Professional $2,000 a month for 2 million requests (overage $5 per 1,000, cap 10 million) with a commercial licence, redistribution, webhooks and uptime SLAs. Enterprise by contact. Premium endpoints count as 2, 4 or 8 requests by plan. Over x402, each GET data endpoint quotes its own USDC price in the 402 response; /earnings quoted $0.02 on 3 November 2026. No free tier found.", "priceSummary": "$0.02 / call", "where": "hosted", "x402": { "level": "yes", "evidence": "Announced 23 October 2026. Every documented GET data endpoint (36 per the announcement) returns 402 with x402 version 2 terms in the PAYMENT-REQUIRED header, scheme exact, USDC on Base (eip155:8453), payTo 0xC45E70793C01C6Ae4336dd5a5503baC958d32403, 300-second timeout. Error responses are not charged, payment settles only after a successful response, history is limited to the last 365 days and the licence is Non-Professional. Our unauthenticated GET /earnings?ticker=NVDA on 3 November 2026 returned 402 with amount 20000 base units, $0.02 (https://docs.financialdatasets.ai/x402.md).", "endpoints": [ { "url": "https://api.financialdatasets.ai/earnings", "priceUsd": 0.02, "network": "eip155:8453" } ] }, "toolCount": 28, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-03" }, "docsUrl": "https://docs.financialdatasets.ai/", "llmsTxt": "https://docs.financialdatasets.ai/llms.txt", "openapi": "https://www.financialdatasets.ai/openapi.json", "capabilities": [ "market.fundamentals", "market.filings", "market.prices", "market.history", "market.news", "market.indices", "data.markets", "data.company" ], "tags": [ "official", "hosted", "x402", "usage", "prepaid", "openapi", "llms-txt", "mcp", "remote-mcp", "oauth", "webhooks", "no-status-page", "closed-source" ], "lastRelease": "2026-10-26", "graded": true, "anchor": { "graded": true, "score": 61.8, "grade": "C", "agentReady": false, "rank": 492, "ranked": true, "rankOf": 1349, "categoryRank": 3, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 56, "payments": 75, "reliability": 43, "schema": 80, "security": 49, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-03" }, "negative": 0, "verdict": "Every documented GET data endpoint takes x402 with no key, failed calls uncharged, and an agent can open and fund an account by API. A public OpenAPI file, llms.txt and a 28-tool OAuth MCP server cover the same data. There is no status page or free tier, keyed rate limits aren't published, and x402 data stops at 365 days.", "bestFor": "An agent doing US company research from SEC-sourced statements, filings, insider and institutional data that wants to pay per call with no account, or a small team on credits.", "strengths": [ "x402 on every documented GET data endpoint (36), USDC on Base, no key or account, error responses not charged, with the price in each 402 response ($0.02 on /earnings on 3 November 2026)", "OpenAPI 3.0.1 with 68 operations and a description on each, llms.txt, and a Markdown twin of every docs page", "`POST /agent/signup` and `POST /agent/checkout-link` let an agent open and fund an account with the owner paying a Stripe link, minimum $20", "Hosted MCP server with 28 tools, OAuth 2 PKCE and dynamic client registration, or an X-API-KEY header on /api", "Privacy policy with retention periods and a dated subprocessor list, and terms that say inputs aren't used for training" ], "weaknesses": [ "No status page, incident history or published uptime; the Professional plan's SLA terms aren't public", "No free tier. The cheapest route with a key is $20 for 1,000 credits, and data calls return 402 until an account is funded", "Rate limits for keyed plans aren't published; only x402 states 10,000 requests a minute per wallet", "x402 requests return only the last 365 days and are licensed for Non-Professional use; Credits and Personal plans carry the same limit", "No API version or changelog; the news page carries four posts in 2026, and the Python package on PyPI dates from May 2024" ], "agentNotes": [ "Without a key, read the price from the PAYMENT-REQUIRED header of the 402 and pay with x402 on Base; each page of `next_page_url` is a separate paid request", "Keep `limit` small and ask for one `period` at a time; premium endpoints count as 2, 4 or 8 requests on keyed plans", "Send the key only to api.financialdatasets.ai in the `X-API-KEY` header; on 401 ask the owner for a new key rather than signing up again", "Treat a 402 on a keyed account as an empty balance and mint a checkout link for the owner; don't retry the call", "Check the plan's licence before showing the data to anyone else; redistribution needs Professional or Enterprise" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 61.8 } ], "editorialScores": { "ergonomics": 73, "maintenance": 56, "payments": 75, "reliability": 43, "schema": 80, "security": 49, "transparency": 60 }, "provenanceScore": 65, "checked": { "categories": { "ergonomics": "2026-11-03", "maintenance": "2026-11-03", "payments": "2026-11-03", "reliability": "2026-11-03", "schema": "2026-11-03", "security": "2026-11-03", "transparency": "2026-11-03" }, "last": "2026-11-03", "oldest": "2026-11-03", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install financial-datasets", "http": "curl -H \"X-API-KEY: $FINANCIAL_DATASETS_KEY\" \"https://api.financialdatasets.ai/financials/income-statements?ticker=AAPL\u0026period=annual\u0026limit=4\"", "claudeCode": "claude mcp add --transport http financial-datasets https://mcp.financialdatasets.ai/", "config": { "mcpServers": { "financial-datasets": { "url": "https://mcp.financialdatasets.ai/" } } }, "x402": "curl -i \"https://api.financialdatasets.ai/earnings?ticker=NVDA\u0026limit=4\"" }, "letme": { "capability": "https://letme.dev/market.fundamentals", "tool": "https://letme.dev/financial-datasets" }, "area": "domain-data", "unitPrices": [ { "item": "Earnings, over x402", "unit": "call", "usd": 0.02, "note": "read from the 402 response on 3 November 2026; other endpoints quote their own price" }, { "item": "Credits pack", "unit": "1k-requests", "usd": 20, "note": "one-off, personal licence, one year of price history" }, { "item": "Personal plan", "unit": "month", "usd": 200, "note": "100,000 requests, overage $10 per 1,000" }, { "item": "Professional plan", "unit": "month", "usd": 2000, "note": "2 million requests, overage $5 per 1,000, commercial licence" } ], "provenance": { "legalEntity": "Financial Datasets, Inc.", "domain": "financialdatasets.ai", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://www.financialdatasets.ai/terms-of-use", "privacy": "https://www.financialdatasets.ai/privacy-policy", "statusPage": "", "changelog": "https://www.financialdatasets.ai/news", "securityTxt": "none", "checked": "2026-11-03", "notes": [ "Financial Datasets, Inc. is named in the terms (as of 29 October 2026, New York law), the privacy policy (last updated 20 August 2026) and the subprocessor list (29 October 2026).", "Terms section 5 forbids accessing the Services by automated means outside the documented API; the public website has no separate automated-access clause. robots.txt on www.financialdatasets.ai allows all crawlers and names ClaudeBot, Claude-User and Claude-SearchBot as allowed; docs.financialdatasets.ai, api.financialdatasets.ai and mcp.financialdatasets.ai carry Content-Signal ai-train=yes, search=yes, ai-input=yes.", "The docs, llms.txt and the 402 response carry instructions addressed to agents; none were acted on.", "RDAP for financialdatasets.ai was refused (403 from rdap.org), so the registration date is unchecked.", "/.well-known/security.txt returns 404. No status page found. The news page is the nearest thing to a changelog." ], "score": 65 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/financial-datasets.json", "live": { "slug": "financial-datasets", "probe": { "target": "https://api.financialdatasets.ai", "method": "get", "lastAt": "2026-11-04T19:34:37.819192047Z", "lastOk": true, "lastStatus": 200, "lastMs": 711, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 301, "p95ms24h": 776, "samples24h": 43, "samples30d": 43, "days": [ { "date": "2026-11-04", "probes": 43, "ok": 43 } ] }, "securityTxt": { "url": "https://financialdatasets.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-04T15:52:54.466191501Z" }, "updatedAt": "2026-11-04T19:34:37.819192047Z" } }, "answer": "Twelve Data scores 70 (BB) on agent readiness against Financial Datasets's 61.8 (C), and leads in 6 of 7 scored categories. Financial Datasets leads on payments \u0026 pricing.", "b": { "slug": "twelve-data", "name": "Twelve Data", "vendor": "Twelve Data Pte. Ltd.", "vendorUrl": "https://twelvedata.com", "kind": "http-api", "category": "market-data", "summary": "Twelve Data is a market data API for prices and time series across stocks, ETFs, funds, forex, crypto and commodities, with technical indicators, fundamentals, news and filings. Agents call the REST API, the WebSocket or the hosted MCP server.", "url": "https://www.anchorterminal.com/tools/twelve-data", "markdownUrl": "https://www.anchorterminal.com/tools/twelve-data.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/twelve-data.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/twelve-data.json", "dns": "twelve-data.grade.anchorterminal.com", "repo": "https://github.com/twelvedata/mcp", "transports": [ "http", "streamable-http", "stdio", "websocket" ], "remoteUrl": "https://api.twelvedata.com", "packages": [ { "registry": "pypi", "name": "twelvedata" }, { "registry": "npm", "name": "twelvedata" } ], "auth": "mixed", "authNotes": "REST and WebSocket take an API key from the dashboard, sent as an `Authorization: apikey \u003ckey\u003e` header (the docs call it recommended) or as `?apikey=`. The hosted MCP server does not accept keys; it uses OAuth 2.1 at auth.twelvedata.com with authorisation code and PKCE, refresh tokens, Client ID Metadata Documents or dynamic client registration, one scope `twelvedata`, a required `resource` parameter and a revocation endpoint. The user signs in with a Twelve Data account. No key scopes or expiry found.", "pricing": "freemium", "pricingNotes": "Basic plan free at 8 API credits a minute and 800 a day with real-time US equities, forex and crypto, no card. Individual plans Grow from $29, Pro from $99 and Ultra from $329 a month (55, 610 and 2,584 credits a minute at the lowest tier, up to $999 for 10,946), annual billing 17 per cent less. Business plans Venture from $149 and Enterprise $1,099 a month, Enterprise+ by quote. Most endpoints cost one credit per symbol; fundamentals and analysis cost more (https://twelvedata.com/pricing.md, checked 2026-11-03).", "priceSummary": "$29 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the OpenAPI document, llms.txt, pricing.md, auth.md or the MCP docs (checked 2026-11-03). A call without a key returns HTTP 401 with a JSON `code`, `message` and `status`.", "endpoints": [] }, "toolCount": 27, "popularity": { "githubStars": 791, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-03" }, "docsUrl": "https://twelvedata.com/docs", "llmsTxt": "https://twelvedata.com/llms.txt", "openapi": "https://api.twelvedata.com/doc/swagger/openapi.json", "capabilities": [ "market.prices", "market.history", "market.fundamentals", "market.crypto", "market.indices", "market.news", "market.filings", "data.markets" ], "tags": [ "hosted", "freemium", "api-key", "oauth", "mcp", "remote-mcp", "openapi", "llms-txt", "status-page", "soc2", "sla", "no-card", "free-tier", "closed-source", "python", "typescript", "go", "java", "stocks", "forex", "crypto", "streaming", "personal-use" ], "lastRelease": "2026-10-12", "graded": true, "anchor": { "graded": true, "score": 70, "grade": "BB", "agentReady": true, "rank": 197, "ranked": true, "rankOf": 1349, "categoryRank": 2, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 84, "maintenance": 82, "payments": 30, "reliability": 83, "schema": 83, "security": 54, "transparency": 67 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-03" }, "negative": 0, "verdict": "A public OpenAPI 3.1 document with error responses on all 187 operations, Markdown docs and pricing for agents, a status page with two short incidents in 90 days, and an MCP server behind OAuth 2.1. The REST key still travels in the query string as a documented option, no enums are declared, and free and individual plans forbid company use.", "bestFor": "Agents that need prices and time series across many exchanges and asset classes with one contract, CSV output, and a documented error table.", "strengths": [ "OpenAPI 3.1 for 187 operations with eight documented response codes each, plus llms.txt, pricing.md and auth.md for agents", "Status page with component history, two incidents of 20 and 16 minutes in the 90 days to 3 November 2026", "Hosted MCP server on OAuth 2.1 with PKCE, resource indicators and token revocation, and 27 read-only tools in the open source", "Official SDKs for Python, Node.js, Go, Java and R, a CLI, and monthly dated product updates", "Free Basic plan at 800 credits a day with no card, and plan prices published without login" ], "weaknesses": [ "The REST docs and OpenAPI accept the key as `?apikey=` in the query string alongside the header", "No parameter in the OpenAPI document declares an enum; interval and type values are listed in Markdown only", "Free and individual plans are for internal, non-commercial use; any company, team or fund needs a business plan from $149 a month", "No Retry-After or backoff guidance on the documented 429", "The open-source MCP repository ships no licence file, and its local HTTP mode serves /mcp with no authentication by default" ], "agentNotes": [ "Send the key as `Authorization: apikey \u003ckey\u003e`, not in the URL; the hosted MCP server takes OAuth only, so never paste a key into a connector's key field", "Set `outputsize` (1 to 5,000, default 30) and `format=CSV` on time_series to keep responses small, and read `status` in the JSON body since errors come with HTTP codes and a `message`", "Count credits, not calls; most endpoints cost one credit per symbol and the Basic plan allows 8 a minute and 800 a day, with 429 when exceeded", "A 403 means the key's plan lacks the endpoint or symbol, not a bad key; check pricing.md before escalating", "Use trial symbols from twelvedata.com/exchanges to test premium data on the free plan" ], "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": 70 } ], "editorialScores": { "ergonomics": 84, "maintenance": 82, "payments": 30, "reliability": 83, "schema": 83, "security": 54, "transparency": 50 }, "provenanceScore": 83, "checked": { "categories": { "ergonomics": "2026-11-03", "maintenance": "2026-11-03", "payments": "2026-11-03", "reliability": "2026-11-03", "schema": "2026-11-03", "security": "2026-11-03", "transparency": "2026-11-03" }, "last": "2026-11-03", "oldest": "2026-11-03", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install twelvedata", "http": "curl -H \"Authorization: apikey $TWELVE_DATA_API_KEY\" \"https://api.twelvedata.com/time_series?symbol=AAPL\u0026interval=1day\u0026outputsize=30\"", "config": { "mcpServers": { "twelvedata": { "url": "https://mcp.twelvedata.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/market.prices", "tool": "https://letme.dev/twelve-data" }, "area": "domain-data", "unitPrices": [ { "item": "Grow, 55 credits a minute", "unit": "month", "usd": 29, "note": "individual, internal use, lowest Grow tier" }, { "item": "Pro, 610 credits a minute", "unit": "month", "usd": 99, "note": "individual, lowest Pro tier" }, { "item": "Ultra, 2,584 credits a minute", "unit": "month", "usd": 329, "note": "individual, lowest Ultra tier" }, { "item": "Venture, 610 credits a minute", "unit": "month", "usd": 149, "note": "business, external display" }, { "item": "Enterprise, 10,946 credits a minute", "unit": "month", "usd": 1099, "note": "business, external distribution, 99.99 per cent SLA" } ], "provenance": { "legalEntity": "Twelve Data Pte. Ltd.", "domain": "twelvedata.com", "domainRegistered": "2019-07-11", "endpointOnVendorDomain": true, "terms": "https://twelvedata.com/terms", "privacy": "https://twelvedata.com/privacy", "statusPage": "https://twelvedata.isitup.cloud", "changelog": "https://twelvedata.com/news", "securityTxt": "none", "checked": "2026-11-03", "notes": [ "The terms, last updated 1 January 2026, name Twelve Data Pte. Ltd. (UEN 202006058W) under Singapore law with SIAC arbitration. Section 2.3(h) forbids automated tools used to exceed rate limits; nothing forbids reading the website.", "The privacy policy, last updated 22 September 2026, gives the Singapore address, retention of 2 years for account data, 7 years for financial records and 1 year for usage data, and names Azure, Stripe, PayPal, Cloudflare, Intercom, Segment, CookieYes, Google Analytics and Microsoft Clarity.", "twelvedata.com/robots.txt disallows /api/, /docs/search, /docs/url/convert and account paths; the docs, pricing, terms and privacy pages are allowed.", "RDAP gives twelvedata.com a registration date of 11 July 2019 at GoDaddy.", "/.well-known/security.txt and /security.txt return 404. twelvedata.com/security returns 404; the trust centre is security.twelvedata.com on SafeBase.", "The status page is hosted by Isitup at twelvedata.isitup.cloud and is linked from llms.txt. The news page carries monthly product updates and is the nearest thing to a changelog." ], "score": 83 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/twelve-data.json", "live": { "slug": "twelve-data", "probe": { "target": "https://api.twelvedata.com", "method": "get", "lastAt": "2026-11-04T19:35:17.57001935Z", "lastOk": true, "lastStatus": 404, "lastMs": 150, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 145, "p95ms24h": 219, "samples24h": 43, "samples30d": 43, "days": [ { "date": "2026-11-04", "probes": 43, "ok": 43 } ] }, "vendorStatus": { "page": "https://twelvedata.isitup.cloud", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-04T15:32:39.97677279Z" }, "securityTxt": { "url": "https://twelvedata.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-04T15:54:50.370188865Z" }, "updatedAt": "2026-11-04T19:35:17.57001935Z" } }, "edges": [ { "by": 45, "category": "payments", "leads": "financial-datasets", "name": "Payments \u0026 pricing", "reasons": { "a": "x402 on the vendor's own endpoints for every documented GET data endpoint, 36 of them, with the last 365 days only and a Non-Professional licence; full history, the market snapshot, filing items and the POST endpoints need a key (35 of 40). Plan prices and overage rates are public, and each x402 endpoint quotes its price in the 402 header, $0.02 on /earnings (20). No free tier or trial found; data calls return 402 until an account holds credits, from $20 (0). An agent can pay by x402 with no account, or open an account with `POST /agent/signup` and have the owner fund it (20). Total 75.", "b": "No x402, MPP or L402 (0). Plan prices are public without login in pricing.md and on the pricing page, sold by credits a minute per month rather than per call (10). A free Basic plan at 800 credits a day with no card (20). The key comes from a browser signup and no key API was found; MCP needs an OAuth login by a person (0). 0 + 10 + 20 + 0 = 30." }, "scores": { "a": 75, "b": 30 } }, { "by": 40, "category": "reliability", "leads": "twelve-data", "name": "Reliability", "reasons": { "a": "Graded as a hosted service. No status page was found; status.financialdatasets.ai does not resolve and no page links one (0), so there is no incident history to read (5). The only published limit is 10,000 requests a minute per wallet over x402, with monthly request caps per plan and none per minute for keyed plans (8 of 15). The OpenAPI file declares 429 and the x402 page documents a 503 with Retry-After from the facilitator and a `duplicate_payment` check on replayed signatures (10 of 15). The Professional plan lists uptime SLAs, with no figure published (10). The API is generally available (10). Total 43.", "b": "Read with the hosted lines. A public status page at twelvedata.isitup.cloud lists Price API, Fundamentals API, WebSocket and Website with uptime figures (20). Its history shows two incidents in the 90 days to 3 November 2026, 20 minutes of unavailability across the three APIs on 1 September and 16 minutes on the WebSocket on 14 October, minor only (20). Limits are published with numbers, credits a minute by plan from 8 to 10,946 and 800 a day on Basic (15). The docs document a 429 on the limit and the usage endpoint, with no Retry-After or backoff guidance; reads only (8 of 15). The terms sell a 99.9 per cent SLA with service credits, and the Enterprise plan carries 99.99 per cent (10). The REST API and MCP server are generally available (10). 20 + 20 + 15 + 8 + 10 + 10 = 83." }, "scores": { "a": 43, "b": 83 } }, { "by": 26, "category": "maintenance", "leads": "twelve-data", "name": "Maintenance \u0026 community", "reasons": { "a": "UK fundamentals went live on 26 October 2026, India on 23 October, with Japan and South Korea dated for November on the coverage page (30). Dated changes in the last 90 days are x402 on 23 October, UK fundamentals on 26 October, terms and subprocessor list on 29 October, privacy policy on 20 August, with no changelog as such (12 of 20). Contact is a form and the dashboard; no support email, Discord or forum was found, and the GitHub organisation's four repositories couldn't be read because the GitHub API rate limit was reached (6 of 15). The PyPI package is 0.1.18 of 26 May 2024 by the founder, and the docs point to the OpenAPI file and the MCP server rather than an SDK (5 of 15). Package health unknown, dependencies not checked (3 of 10). Total 56.", "b": "Read as a closed service. The newest dated change is the product update of 12 October 2026, with the MCP repository changed on 1 October and the world-model dataset repository on 31 October (30). Monthly updates dated 12 August, 12 September and 12 October 2026 (20). A monthly changelog, a support portal, a sales contact and a Telegram channel; replies on the MCP repository's issues were not read (10 of 15). Six official SDKs and a CLI, twelvedata-python at v1.4.0 of 27 April 2026 (15). The MCP server pins its dependencies with reasons and ships tests; the Python SDK's changelog stops at version 0.1 (7 of 10). 30 + 20 + 10 + 15 + 7 = 82." }, "scores": { "a": 56, "b": 82 } }, { "by": 11, "category": "ergonomics", "leads": "twelve-data", "name": "Agent ergonomics", "reasons": { "a": "`limit` and `period` on the data endpoints, `as_reported` flags and snapshot variants, with no field selection (15 of 25). `next_page_url` cursors and ticker, CIK, market and date filters (18 of 20). A 402 body says what to do next, x402 errors carry named values, and the spec lists 400, 401, 403, 404, 409, 422, 429, 502 and 503 (16 of 20). Data calls are GETs, payment settles only after a successful response, and a replayed x402 signature is refused; no readOnlyHint found for the MCP tools and no idempotency key for the POST endpoints (14 of 20). Few required parameters, 28 compact MCP tools, but the only package, financial-datasets on PyPI, is at 0.1.18 from 26 May 2024 (10 of 15). Total 73.", "b": "The REST API is the surface graded. `outputsize` 1 to 5,000 with a default of 30, `format=CSV`, `dp`, date ranges and batch requests size responses, and the MCP server lists 27 tools (20 of 25). Date ranges, `outputsize` and exchange, country and type filters, with no cursor pagination (15 of 20). Error codes with meanings an agent can branch on, 403 for plan limits and 429 for credits (16 of 20). Every operation is a read, and the MCP source marks tools readOnlyHint (18 of 20). Few required parameters, a demo key, and official SDKs in Python, Node.js, Go, Java and R (15). 20 + 15 + 16 + 18 + 15 = 84." }, "scores": { "a": 73, "b": 84 } }, { "by": 5, "category": "security", "leads": "twelve-data", "name": "Security \u0026 auth", "reasons": { "a": "A plain account key in the `X-API-KEY` header only, revoked from the dashboard, with no scopes, rotation or expiry; the MCP server adds OAuth 2 with PKCE (plain and S256), dynamic client registration, a revocation endpoint and one scope (20 of 30). Every data endpoint is a read; the x402 route and agent signup don't change the account beyond funding it (15 of 20). Filing text, filing items and news are third-party content, with no guidance on treating them as untrusted (5 of 15). The privacy policy says requests and responses are logged for up to three years; no per-call log is shown to the key holder (5 of 15). security.txt returns 404 and no bounty, SOC 2 or ISO 27001 was found; the terms ask for prompt notice of a compromised key and a subprocessor list is published (4 of 20). Total 49.", "b": "The REST key is a plain per-account key with no scopes, accepted as a header or as `?apikey=` (20 less 10 for the query string). The hosted MCP server refuses keys and uses OAuth 2.1 with PKCE, a resource indicator, refresh tokens, revocation and one scope, which lifts the credential model for that surface (18 of 30). Every operation is a read (15 of 20). Company news is third-party text and no guidance was found (5 of 15). An `/api_usage` endpoint and dashboard usage give the key holder a view of consumption, not a per-call log (6 of 15). A trust centre on SafeBase lists SOC 2, GDPR and CCPA and ten policies; no security.txt, disclosure process or bug bounty was found (10 of 20). 18 + 15 + 5 + 6 + 10 = 54." }, "scores": { "a": 49, "b": 54 } } ], "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Financial Datasets, Inc.", "b": "Twelve Data Pte. Ltd.", "name": "Vendor" }, { "a": "https://api.financialdatasets.ai", "b": "https://api.twelvedata.com", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP, Streamable HTTP, stdio, websocket", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Pay per use", "b": "Freemium", "name": "Pricing" }, { "a": "yes, from $0.02/call", "b": "no", "name": "x402" }, { "a": "28", "b": "27", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-26", "b": "2026-10-12", "name": "Last release" }, { "a": "2026-10-29", "b": "2026-01-01", "name": "Terms last updated" }, { "a": "2026-08-20", "b": "2026-09-22", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "791 stars", "name": "Popularity" } ], "faq": [ { "answer": "Twelve Data scores 70 (BB) on agent readiness against Financial Datasets's 61.8 (C), and leads in 6 of 7 scored categories. Financial Datasets leads on payments \u0026 pricing.", "question": "Which is better for AI agents, Financial Datasets or Twelve Data?" }, { "answer": "Both take an API key or an OAuth sign-in. An agent can also pay Financial Datasets per call over x402, with no account.", "question": "Do Financial Datasets and Twelve Data need an API key?" }, { "answer": "Yes. Financial Datasets has a hosted endpoint at https://api.financialdatasets.ai and Twelve Data at https://api.twelvedata.com.", "question": "Can an agent call Financial Datasets and Twelve Data without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Payments \u0026 pricing, 75 against 30" ], "also": [ "An agent can pay per call over x402, with no account" ], "goodFor": "An agent doing US company research from SEC-sourced statements, filings, insider and institutional data that wants to pay per call with no account, or a small team on credits.", "slug": "financial-datasets", "watchFor": "No status page, incident history or published uptime; the Professional plan's SLA terms aren't public" }, { "aheadOn": [ "Reliability, 83 against 43", "Agent ergonomics, 84 against 73", "Security \u0026 auth, 54 against 49", "Maintenance \u0026 community, 82 against 56" ], "also": [ "Agent-ready, a grade of BB or better", "Runs on your own machine", "Free to start without a card" ], "goodFor": "Agents that need prices and time series across many exchanges and asset classes with one contract, CSV output, and a documented error table.", "slug": "twelve-data", "watchFor": "The REST docs and OpenAPI accept the key as `?apikey=` in the query string alongside the header" } ], "history": null, "job": { "capability": "market.fundamentals", "name": "Market fundamentals" }, "others": [ { "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-financial-datasets.json", "title": "Alpha Vantage vs Financial Datasets", "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-financial-datasets" }, { "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-twelve-data.json", "title": "Alpha Vantage vs Twelve Data", "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-twelve-data" }, { "json": "https://www.anchorterminal.com/compare/databento-vs-financial-datasets.json", "title": "Databento vs Financial Datasets", "url": "https://www.anchorterminal.com/compare/databento-vs-financial-datasets" }, { "json": "https://www.anchorterminal.com/compare/databento-vs-twelve-data.json", "title": "Databento vs Twelve Data", "url": "https://www.anchorterminal.com/compare/databento-vs-twelve-data" }, { "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/finnhub-vs-twelve-data.json", "title": "Finnhub vs Twelve Data", "url": "https://www.anchorterminal.com/compare/finnhub-vs-twelve-data" }, { "json": "https://www.anchorterminal.com/compare/intrinio-vs-twelve-data.json", "title": "Intrinio vs Twelve Data", "url": "https://www.anchorterminal.com/compare/intrinio-vs-twelve-data" }, { "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/tiingo-vs-twelve-data.json", "title": "Tiingo vs Twelve Data", "url": "https://www.anchorterminal.com/compare/tiingo-vs-twelve-data" }, { "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-financial-modeling-prep.json", "title": "Financial Datasets vs Financial Modeling Prep", "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-financial-modeling-prep" }, { "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-finnhub.json", "title": "Financial Datasets vs Finnhub", "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-finnhub" }, { "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-intrinio.json", "title": "Financial Datasets vs Intrinio", "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-intrinio" }, { "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-tiingo.json", "title": "Financial Datasets vs Tiingo", "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-tiingo" }, { "json": "https://www.anchorterminal.com/compare/financial-modeling-prep-vs-twelve-data.json", "title": "Financial Modeling Prep vs Twelve Data", "url": "https://www.anchorterminal.com/compare/financial-modeling-prep-vs-twelve-data" }, { "json": "https://www.anchorterminal.com/compare/eodhd-vs-financial-datasets.json", "title": "EODHD vs Financial Datasets", "url": "https://www.anchorterminal.com/compare/eodhd-vs-financial-datasets" }, { "json": "https://www.anchorterminal.com/compare/eodhd-vs-twelve-data.json", "title": "EODHD vs Twelve Data", "url": "https://www.anchorterminal.com/compare/eodhd-vs-twelve-data" }, { "json": "https://www.anchorterminal.com/compare/benzinga-vs-financial-datasets.json", "title": "Benzinga vs Financial Datasets", "url": "https://www.anchorterminal.com/compare/benzinga-vs-financial-datasets" }, { "json": "https://www.anchorterminal.com/compare/benzinga-vs-twelve-data.json", "title": "Benzinga vs Twelve Data", "url": "https://www.anchorterminal.com/compare/benzinga-vs-twelve-data" } ], "panel": null, "scores": [ { "by": 40, "edge": "twelve-data", "financial-datasets": 43, "key": "reliability", "name": "Reliability", "twelve-data": 83, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 3, "edge": "twelve-data", "financial-datasets": 80, "key": "schema", "name": "Schema \u0026 documentation", "twelve-data": 83, "weight": 13 }, { "by": 11, "edge": "twelve-data", "financial-datasets": 73, "key": "ergonomics", "name": "Agent ergonomics", "twelve-data": 84, "weight": 13 }, { "by": 5, "edge": "twelve-data", "financial-datasets": 49, "key": "security", "name": "Security \u0026 auth", "twelve-data": 54, "weight": 14 }, { "by": 45, "edge": "financial-datasets", "financial-datasets": 75, "key": "payments", "name": "Payments \u0026 pricing", "twelve-data": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 26, "edge": "twelve-data", "financial-datasets": 56, "key": "maintenance", "name": "Maintenance \u0026 community", "twelve-data": 82, "weight": 7 }, { "by": 4, "edge": "twelve-data", "financial-datasets": 63, "key": "transparency", "name": "Transparency \u0026 trust", "twelve-data": 67, "weight": 7 } ], "summary": "Twelve Data scores 70 (BB) on agent readiness against Financial Datasets's 61.8 (C), and leads in 6 of 7 scored categories. Financial Datasets leads on payments \u0026 pricing. Both do market fundamentals. Financial Datasets accepts x402. Twelve Data doesn't.", "tasks": null, "tutorials": [], "verdicts": { "financial-datasets": "Every documented GET data endpoint takes x402 with no key, failed calls uncharged, and an agent can open and fund an account by API. A public OpenAPI file, llms.txt and a 28-tool OAuth MCP server cover the same data. There is no status page or free tier, keyed rate limits aren't published, and x402 data stops at 365 days.", "twelve-data": "A public OpenAPI 3.1 document with error responses on all 187 operations, Markdown docs and pricing for agents, a status page with two short incidents in 90 days, and an MCP server behind OAuth 2.1. The REST key still travels in the query string as a documented option, no enums are declared, and free and individual plans forbid company use." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data", "json": "https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data.min.md" }, "markdown": "Twelve Data scores 70 (BB) on agent readiness against Financial Datasets's 61.8 (C), and leads in 6 of 7 scored categories. Financial Datasets leads on payments \u0026 pricing. Both do market fundamentals. Financial Datasets accepts x402. Twelve Data doesn't.\n\n- Financial Datasets: grade C, 61.8/100, rank #492 of 1349. Markdown https://www.anchorterminal.com/tools/financial-datasets.md · JSON https://www.anchorterminal.com/api/v1/tools/financial-datasets.json\n- Twelve Data: grade BB, 70/100, rank #197 of 1349. Markdown https://www.anchorterminal.com/tools/twelve-data.md · JSON https://www.anchorterminal.com/api/v1/tools/twelve-data.json\n- Best financial market data APIs for AI agents: https://www.anchorterminal.com/best/market-data/index.md\n- All 55 markets comparisons: https://www.anchorterminal.com/compare/market-data/index.md\n\n## Which one, for what\n\n### Financial Datasets (C)\n\nGood for: An agent doing US company research from SEC-sourced statements, filings, insider and institutional data that wants to pay per call with no account, or a small team on credits.\n\nAhead on:\n- Payments \u0026 pricing, 75 against 30\n\nAlso in its favour:\n- An agent can pay per call over x402, with no account\n\nWatch for: No status page, incident history or published uptime; the Professional plan's SLA terms aren't public\n\n### Twelve Data (BB)\n\nGood for: Agents that need prices and time series across many exchanges and asset classes with one contract, CSV output, and a documented error table.\n\nAhead on:\n- Reliability, 83 against 43\n- Agent ergonomics, 84 against 73\n- Security \u0026 auth, 54 against 49\n- Maintenance \u0026 community, 82 against 56\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- Runs on your own machine\n- Free to start without a card\n\nWatch for: The REST docs and OpenAPI accept the key as `?apikey=` in the query string alongside the header\n\n\n## Why the edge\n\n### Payments \u0026 pricing: Financial Datasets +45\n\n- Financial Datasets (75): x402 on the vendor's own endpoints for every documented GET data endpoint, 36 of them, with the last 365 days only and a Non-Professional licence; full history, the market snapshot, filing items and the POST endpoints need a key (35 of 40). Plan prices and overage rates are public, and each x402 endpoint quotes its price in the 402 header, $0.02 on /earnings (20). No free tier or trial found; data calls return 402 until an account holds credits, from $20 (0). An agent can pay by x402 with no account, or open an account with `POST /agent/signup` and have the owner fund it (20). Total 75.\n- Twelve Data (30): No x402, MPP or L402 (0). Plan prices are public without login in pricing.md and on the pricing page, sold by credits a minute per month rather than per call (10). A free Basic plan at 800 credits a day with no card (20). The key comes from a browser signup and no key API was found; MCP needs an OAuth login by a person (0). 0 + 10 + 20 + 0 = 30.\n\n### Reliability: Twelve Data +40\n\n- Financial Datasets (43): Graded as a hosted service. No status page was found; status.financialdatasets.ai does not resolve and no page links one (0), so there is no incident history to read (5). The only published limit is 10,000 requests a minute per wallet over x402, with monthly request caps per plan and none per minute for keyed plans (8 of 15). The OpenAPI file declares 429 and the x402 page documents a 503 with Retry-After from the facilitator and a `duplicate_payment` check on replayed signatures (10 of 15). The Professional plan lists uptime SLAs, with no figure published (10). The API is generally available (10). Total 43.\n- Twelve Data (83): Read with the hosted lines. A public status page at twelvedata.isitup.cloud lists Price API, Fundamentals API, WebSocket and Website with uptime figures (20). Its history shows two incidents in the 90 days to 3 November 2026, 20 minutes of unavailability across the three APIs on 1 September and 16 minutes on the WebSocket on 14 October, minor only (20). Limits are published with numbers, credits a minute by plan from 8 to 10,946 and 800 a day on Basic (15). The docs document a 429 on the limit and the usage endpoint, with no Retry-After or backoff guidance; reads only (8 of 15). The terms sell a 99.9 per cent SLA with service credits, and the Enterprise plan carries 99.99 per cent (10). The REST API and MCP server are generally available (10). 20 + 20 + 15 + 8 + 10 + 10 = 83.\n\n### Maintenance \u0026 community: Twelve Data +26\n\n- Financial Datasets (56): UK fundamentals went live on 26 October 2026, India on 23 October, with Japan and South Korea dated for November on the coverage page (30). Dated changes in the last 90 days are x402 on 23 October, UK fundamentals on 26 October, terms and subprocessor list on 29 October, privacy policy on 20 August, with no changelog as such (12 of 20). Contact is a form and the dashboard; no support email, Discord or forum was found, and the GitHub organisation's four repositories couldn't be read because the GitHub API rate limit was reached (6 of 15). The PyPI package is 0.1.18 of 26 May 2024 by the founder, and the docs point to the OpenAPI file and the MCP server rather than an SDK (5 of 15). Package health unknown, dependencies not checked (3 of 10). Total 56.\n- Twelve Data (82): Read as a closed service. The newest dated change is the product update of 12 October 2026, with the MCP repository changed on 1 October and the world-model dataset repository on 31 October (30). Monthly updates dated 12 August, 12 September and 12 October 2026 (20). A monthly changelog, a support portal, a sales contact and a Telegram channel; replies on the MCP repository's issues were not read (10 of 15). Six official SDKs and a CLI, twelvedata-python at v1.4.0 of 27 April 2026 (15). The MCP server pins its dependencies with reasons and ships tests; the Python SDK's changelog stops at version 0.1 (7 of 10). 30 + 20 + 10 + 15 + 7 = 82.\n\n### Agent ergonomics: Twelve Data +11\n\n- Financial Datasets (73): `limit` and `period` on the data endpoints, `as_reported` flags and snapshot variants, with no field selection (15 of 25). `next_page_url` cursors and ticker, CIK, market and date filters (18 of 20). A 402 body says what to do next, x402 errors carry named values, and the spec lists 400, 401, 403, 404, 409, 422, 429, 502 and 503 (16 of 20). Data calls are GETs, payment settles only after a successful response, and a replayed x402 signature is refused; no readOnlyHint found for the MCP tools and no idempotency key for the POST endpoints (14 of 20). Few required parameters, 28 compact MCP tools, but the only package, financial-datasets on PyPI, is at 0.1.18 from 26 May 2024 (10 of 15). Total 73.\n- Twelve Data (84): The REST API is the surface graded. `outputsize` 1 to 5,000 with a default of 30, `format=CSV`, `dp`, date ranges and batch requests size responses, and the MCP server lists 27 tools (20 of 25). Date ranges, `outputsize` and exchange, country and type filters, with no cursor pagination (15 of 20). Error codes with meanings an agent can branch on, 403 for plan limits and 429 for credits (16 of 20). Every operation is a read, and the MCP source marks tools readOnlyHint (18 of 20). Few required parameters, a demo key, and official SDKs in Python, Node.js, Go, Java and R (15). 20 + 15 + 16 + 18 + 15 = 84.\n\n### Security \u0026 auth: Twelve Data +5\n\n- Financial Datasets (49): A plain account key in the `X-API-KEY` header only, revoked from the dashboard, with no scopes, rotation or expiry; the MCP server adds OAuth 2 with PKCE (plain and S256), dynamic client registration, a revocation endpoint and one scope (20 of 30). Every data endpoint is a read; the x402 route and agent signup don't change the account beyond funding it (15 of 20). Filing text, filing items and news are third-party content, with no guidance on treating them as untrusted (5 of 15). The privacy policy says requests and responses are logged for up to three years; no per-call log is shown to the key holder (5 of 15). security.txt returns 404 and no bounty, SOC 2 or ISO 27001 was found; the terms ask for prompt notice of a compromised key and a subprocessor list is published (4 of 20). Total 49.\n- Twelve Data (54): The REST key is a plain per-account key with no scopes, accepted as a header or as `?apikey=` (20 less 10 for the query string). The hosted MCP server refuses keys and uses OAuth 2.1 with PKCE, a resource indicator, refresh tokens, revocation and one scope, which lifts the credential model for that surface (18 of 30). Every operation is a read (15 of 20). Company news is third-party text and no guidance was found (5 of 15). An `/api_usage` endpoint and dashboard usage give the key holder a view of consumption, not a per-call log (6 of 15). A trust centre on SafeBase lists SOC 2, GDPR and CCPA and ten policies; no security.txt, disclosure process or bug bounty was found (10 of 20). 18 + 15 + 5 + 6 + 10 = 54.\n\n## Score by category\n\n| Category | Weight | Financial Datasets | Twelve Data | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 43 | 83 | Twelve Data +40 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 80 | 83 | Twelve Data +3 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 84 | Twelve Data +11 |\n| Security \u0026 auth | 14% (17.5 this run) | 49 | 54 | Twelve Data +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 75 | 30 | Financial Datasets +45 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 56 | 82 | Twelve Data +26 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 67 | Twelve Data +4 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **61.8 · C** | **70 · BB** | |\n\n## Facts side by side\n\n| Fact | Financial Datasets | Twelve Data |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Financial Datasets, Inc. | Twelve Data Pte. Ltd. |\n| Hosted endpoint | `https://api.financialdatasets.ai` | `https://api.twelvedata.com` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio, websocket |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Pay per use | Freemium |\n| x402 | yes, from $0.02/call | no |\n| Tools exposed | 28 | 27 |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| Last release | 2026-10-26 | 2026-10-12 |\n| Terms last updated | 2026-10-29 | 2026-01-01 |\n| Privacy policy last updated | 2026-08-20 | 2026-09-22 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | none | 791 stars |\n\n## Verdicts\n\n**Financial Datasets.** Every documented GET data endpoint takes x402 with no key, failed calls uncharged, and an agent can open and fund an account by API. A public OpenAPI file, llms.txt and a 28-tool OAuth MCP server cover the same data. There is no status page or free tier, keyed rate limits aren't published, and x402 data stops at 365 days.\n\n**Twelve Data.** A public OpenAPI 3.1 document with error responses on all 187 operations, Markdown docs and pricing for agents, a status page with two short incidents in 90 days, and an MCP server behind OAuth 2.1. The REST key still travels in the query string as a documented option, no enums are declared, and free and individual plans forbid company use.\n\n## Before you call either\n\n### Financial Datasets\n\n1. Without a key, read the price from the PAYMENT-REQUIRED header of the 402 and pay with x402 on Base; each page of `next_page_url` is a separate paid request\n2. Keep `limit` small and ask for one `period` at a time; premium endpoints count as 2, 4 or 8 requests on keyed plans\n3. Send the key only to api.financialdatasets.ai in the `X-API-KEY` header; on 401 ask the owner for a new key rather than signing up again\n4. Treat a 402 on a keyed account as an empty balance and mint a checkout link for the owner; don't retry the call\n5. Check the plan's licence before showing the data to anyone else; redistribution needs Professional or Enterprise\n\n### Twelve Data\n\n1. Send the key as `Authorization: apikey \u003ckey\u003e`, not in the URL; the hosted MCP server takes OAuth only, so never paste a key into a connector's key field\n2. Set `outputsize` (1 to 5,000, default 30) and `format=CSV` on time_series to keep responses small, and read `status` in the JSON body since errors come with HTTP codes and a `message`\n3. Count credits, not calls; most endpoints cost one credit per symbol and the Basic plan allows 8 a minute and 800 a day, with 429 when exceeded\n4. A 403 means the key's plan lacks the endpoint or symbol, not a bad key; check pricing.md before escalating\n5. Use trial symbols from twelvedata.com/exchanges to test premium data on the free plan\n\n## Questions\n\n### Which is better for AI agents, Financial Datasets or Twelve Data?\n\nTwelve Data scores 70 (BB) on agent readiness against Financial Datasets's 61.8 (C), and leads in 6 of 7 scored categories. Financial Datasets leads on payments \u0026 pricing.\n\n### Do Financial Datasets and Twelve Data need an API key?\n\nBoth take an API key or an OAuth sign-in. An agent can also pay Financial Datasets per call over x402, with no account.\n\n### Can an agent call Financial Datasets and Twelve Data without installing anything?\n\nYes. Financial Datasets has a hosted endpoint at https://api.financialdatasets.ai and Twelve Data at https://api.twelvedata.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data.json, and with the fewest tokens: https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"financial-datasets\", \"b\": \"twelve-data\"}`. From a terminal: `anchor compare financial-datasets twelve-data`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/financial-datasets.json and https://www.anchorterminal.com/api/v1/tools/twelve-data.json\n\n## Other comparisons with Financial Datasets or Twelve Data\n\n- [Alpha Vantage vs Financial Datasets](https://www.anchorterminal.com/compare/alpha-vantage-vs-financial-datasets.md)\n- [Alpha Vantage vs Twelve Data](https://www.anchorterminal.com/compare/alpha-vantage-vs-twelve-data.md)\n- [Databento vs Financial Datasets](https://www.anchorterminal.com/compare/databento-vs-financial-datasets.md)\n- [Databento vs Twelve Data](https://www.anchorterminal.com/compare/databento-vs-twelve-data.md)\n- [Financial Datasets vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/financial-datasets-vs-massive.md)\n- [Finnhub vs Twelve Data](https://www.anchorterminal.com/compare/finnhub-vs-twelve-data.md)\n- [Intrinio vs Twelve Data](https://www.anchorterminal.com/compare/intrinio-vs-twelve-data.md)\n- [Massive (formerly Polygon.io) vs Twelve Data](https://www.anchorterminal.com/compare/massive-vs-twelve-data.md)\n- [Tiingo vs Twelve Data](https://www.anchorterminal.com/compare/tiingo-vs-twelve-data.md)\n- [Financial Datasets vs Financial Modeling Prep](https://www.anchorterminal.com/compare/financial-datasets-vs-financial-modeling-prep.md)\n- [Financial Datasets vs Finnhub](https://www.anchorterminal.com/compare/financial-datasets-vs-finnhub.md)\n- [Financial Datasets vs Intrinio](https://www.anchorterminal.com/compare/financial-datasets-vs-intrinio.md)\n- [Financial Datasets vs Tiingo](https://www.anchorterminal.com/compare/financial-datasets-vs-tiingo.md)\n- [Financial Modeling Prep vs Twelve Data](https://www.anchorterminal.com/compare/financial-modeling-prep-vs-twelve-data.md)\n- [EODHD vs Financial Datasets](https://www.anchorterminal.com/compare/eodhd-vs-financial-datasets.md)\n- [EODHD vs Twelve Data](https://www.anchorterminal.com/compare/eodhd-vs-twelve-data.md)\n- [Benzinga vs Financial Datasets](https://www.anchorterminal.com/compare/benzinga-vs-financial-datasets.md)\n- [Benzinga vs Twelve Data](https://www.anchorterminal.com/compare/benzinga-vs-twelve-data.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-04", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Financial Datasets vs Twelve Data", "url": "" } ], "description": "Twelve Data scores 70 (BB) to Financial Datasets's 61.8 (C) for market fundamentals. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Financial Datasets C 61.8", "Twelve Data BB 70", "scores" ], "h1": "Financial Datasets vs Twelve Data", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/financial-datasets-vs-twelve-data", "published": "2026-10-01", "section": "tools", "title": "Financial Datasets vs Twelve Data for AI agents (2026)", "toc": null, "updated": "2026-11-03", "url": "https://www.anchorterminal.com/compare/financial-datasets-vs-twelve-data" }, "tokens": { "markdown": 4250, "slim": 2480 }, "version": 1 }