{
  "data": {
    "a": {
      "slug": "alpha-vantage",
      "name": "Alpha Vantage",
      "vendor": "Alpha Vantage Inc.",
      "vendorUrl": "https://www.alphavantage.co",
      "kind": "http-api",
      "category": "data-providers",
      "summary": "Alpha Vantage is a market data API for stocks, options, indices, forex, crypto, commodities, fundamentals, news sentiment, economic series and technical indicators. Agents call one REST endpoint with a function name, or the official MCP server at mcp.alphavantage.co.",
      "url": "https://www.anchorterminal.com/tools/alpha-vantage",
      "markdownUrl": "https://www.anchorterminal.com/tools/alpha-vantage.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/alpha-vantage.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/alpha-vantage.json",
      "repo": "https://github.com/alphavantage/alpha_vantage_mcp",
      "license": "Proprietary service under Alpha Vantage's Terms of Service. The MCP server, CLI and shared client in alphavantage/alpha_vantage_mcp are MIT",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://www.alphavantage.co/query",
      "packages": [
        {
          "registry": "pypi",
          "name": "marketdata-mcp-server"
        },
        {
          "registry": "pypi",
          "name": "marketdata-cli"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve key. A form at alphavantage.co/support/#api-key asks for a name, an organisation and an email address and returns a free key. REST calls send it as `apikey=` in the query string, the only method the documentation shows. One key per account, no scopes. To replace a key the pages tell users to email support. The hosted MCP server takes OAuth 2 (authorisation code with PKCE, dynamic client registration, one scope `alphavantage:read`), where the user enters the key on a consent page. An `?apikey=` MCP URL still works and is marked deprecated.",
      "pricing": "freemium",
      "pricingNotes": "Free key at 25 requests a day with no card, covering most functions. Premium plans are priced by requests a minute with no daily limit, $49.99 a month for 75 up to $249.99 for 1,200, or ten times the monthly price a year (https://www.alphavantage.co/premium/). Real-time and 15-minute delayed US data need a premium plan and a separate entitlement step. Commercial use is by written agreement with no public price (checked 2026-10-08).",
      "priceSummary": "$49.99 / mo",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the API documentation, the premium page or the MCP server repository (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 217,
        "npmWeekly": null,
        "pypiWeekly": 172,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://www.alphavantage.co/documentation/",
      "registryName": "io.github.alphavantage/alpha_vantage_mcp",
      "capabilities": [
        "data.markets",
        "market.indices",
        "market.news",
        "market.crypto",
        "data.company"
      ],
      "tags": [
        "hosted",
        "freemium",
        "api-key",
        "mcp",
        "oauth",
        "official",
        "python",
        "stocks",
        "forex",
        "crypto",
        "personal-use"
      ],
      "lastRelease": "2026-10-03",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 41.3,
        "grade": "E",
        "agentReady": false,
        "rank": 799,
        "ranked": true,
        "rankOf": 842,
        "categoryRank": 8,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 54,
          "maintenance": 63,
          "payments": 30,
          "reliability": 30,
          "schema": 46,
          "security": 32,
          "transparency": 48
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "One GET endpoint covers about 130 documented functions, with a free key at 25 requests a day and an official MCP server whose tools are all marked read-only. The REST key travels only in the query string, errors come back as HTTP 200 with a text message, and no status page, SLA or OpenAPI document was found.",
        "bestFor": "A personal research or analysis agent that wants many asset classes, fundamentals, indicators and news sentiment from one key at a flat price.",
        "strengths": [
          "About 130 documented functions behind one GET endpoint, each with demo URLs and sample code in Python, NodeJS, PHP and C#",
          "Free key at 25 requests a day with no card, and five public monthly plans from $49.99 (75 requests a minute) to $249.99 (1,200)",
          "Official MIT MCP server, hosted at `mcp.alphavantage.co/mcp` with OAuth (PKCE, dynamic client registration, one `alphavantage:read` scope) and read-only hints on every tool",
          "`outputsize=compact` returns the latest 100 points, and the MCP server caps a response preview at 32,000 tokens by default",
          "The vendor says it holds a Nasdaq licence for real-time and 15-minute delayed US data, and the terms name FRED as the source of economic and commodity series"
        ],
        "weaknesses": [
          "The REST key is documented only as `apikey=` in the query string, with no scopes and no self-service rotation found",
          "Errors and limit notices return HTTP 200 with an `Error Message` or `Information` text field. No error reference, 429 or Retry-After guidance was found",
          "No status page, SLA, OpenAPI document, llms.txt, API version or API changelog was found",
          "The terms grant personal, non-commercial use only. Use on behalf of a company needs a written agreement",
          "PyPI still serves `marketdata-mcp-server` 0.3.1 from 16 March 2026, and an issue open since 4 September 2026 reports that it crashes on startup"
        ],
        "agentNotes": [
          "Check every 200 response for `Error Message`, `Information` or `Note` keys before parsing data. The API does not signal failures or limits by status code",
          "Budget 25 requests a day on a free key. Real-time, 15-minute delayed and intraday US data, index data and several indicators need a premium plan",
          "Keep `outputsize=compact` unless full history is needed, and ask for `datatype=csv` on long series to cut tokens",
          "Use the hosted MCP server with OAuth at `https://mcp.alphavantage.co/mcp`. The `?apikey=` MCP URL is marked deprecated",
          "Confirm the owner's use is personal and non-commercial, or that a commercial agreement exists, before acting for a business"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "E",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 41.3
          }
        ],
        "editorialScores": {
          "ergonomics": 54,
          "maintenance": 63,
          "payments": 30,
          "reliability": 30,
          "schema": 46,
          "security": 32,
          "transparency": 36
        },
        "provenanceScore": 59,
        "dataQualityScore": 82
      },
      "connect": {
        "install": "uvx marketdata-mcp-server YOUR_API_KEY",
        "http": "curl \"https://www.alphavantage.co/query?function=GLOBAL_QUOTE\u0026symbol=IBM\u0026apikey=$ALPHAVANTAGE_API_KEY\"",
        "claudeCode": "claude mcp add alphavantage -- uvx marketdata-mcp-server YOUR_API_KEY"
      },
      "letme": {
        "capability": "https://letme.dev/data.markets",
        "tool": "https://letme.dev/alpha-vantage"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Premium, 75 requests a minute",
          "unit": "month",
          "usd": 49.99,
          "note": "personal use, no daily limit"
        },
        {
          "item": "Premium, 150 requests a minute",
          "unit": "month",
          "usd": 99.99,
          "note": "personal use"
        },
        {
          "item": "Premium, 300 requests a minute",
          "unit": "month",
          "usd": 149.99,
          "note": "personal use"
        },
        {
          "item": "Premium, 600 requests a minute",
          "unit": "month",
          "usd": 199.99,
          "note": "personal use"
        },
        {
          "item": "Premium, 1,200 requests a minute",
          "unit": "month",
          "usd": 249.99,
          "note": "personal use"
        }
      ],
      "provenance": {
        "legalEntity": "Alpha Vantage Inc.",
        "domain": "alphavantage.co",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://www.alphavantage.co/terms_of_service/",
        "privacy": "https://www.alphavantage.co/privacy/",
        "statusPage": "",
        "changelog": "https://github.com/alphavantage/alpha_vantage_mcp/blob/main/CHANGELOG.md",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The Terms of Service name Alpha Vantage Inc., cover the website and the application programming interface, and are governed by Massachusetts law. The site footer gives Boston, Massachusetts.",
          "The terms and the privacy policy are each served as a PDF at the URL given, so a reader that skips PDFs will not read them. The privacy policy is dated 25 August 2025. The terms carry no date, and the file's metadata shows a change on 27 August 2026.",
          "www.alphavantage.co/.well-known/security.txt and /robots.txt both return 404.",
          "No status page was found. The site links none, and status.alphavantage.co does not present a valid certificate.",
          "The changelog link is the MCP server's. No changelog for the REST API was found.",
          "No RDAP service answered for the .co domain, so the registration date is not recorded. The site's copyright line runs from 2017."
        ],
        "score": 59
      },
      "dataQuality": {
        "coverage": "Global equities, ETFs and mutual funds, US options and indices, forex, crypto, commodities, fundamentals, news sentiment and ten US economic series",
        "coverageRating": 4,
        "freshness": "Real time or 15-minute delayed for US markets on premium plans with entitlement, otherwise historical and end of day",
        "freshnessClass": "realtime",
        "history": "25+ years of daily and intraday equity history (intraday from January 2000), per the documentation",
        "historyYears": 25,
        "methodology": "https://www.alphavantage.co/support/#support",
        "sourcesDisclosed": true,
        "licence": "Proprietary, under the vendor's Terms of Service",
        "licenceClass": "clear",
        "standing": "",
        "standingClass": "none",
        "reuse": "Personal, non-commercial use unless agreed otherwise in writing. Passing data to other people or using it for a company counts as commercial use.",
        "score": 82,
        "checks": null
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/alpha-vantage.json",
      "live": {
        "slug": "alpha-vantage",
        "probe": {
          "target": "https://www.alphavantage.co/query",
          "method": "get",
          "lastAt": "2026-10-09T11:46:21.055073432Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 153,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 131,
          "p95ms24h": 945,
          "samples24h": 44,
          "samples30d": 44,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 44,
              "ok": 44
            }
          ]
        },
        "updatedAt": "2026-10-09T11:46:21.055073432Z"
      }
    },
    "answer": "Companies House API scores 49.3 (D) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 6 of 7 scored categories. Alpha Vantage leads on maintenance \u0026 community.",
    "b": {
      "slug": "companies-house",
      "name": "Companies House API",
      "vendor": "Companies House",
      "vendorUrl": "https://developer.company-information.service.gov.uk",
      "kind": "http-api",
      "category": "data-providers",
      "summary": "Free REST API for the UK register of companies, with officers, filing history, charges and persons with significant control.",
      "url": "https://www.anchorterminal.com/tools/companies-house",
      "markdownUrl": "https://www.anchorterminal.com/tools/companies-house.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/companies-house.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/companies-house.json",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.company-information.service.gov.uk",
      "packages": [],
      "auth": "api-key",
      "authNotes": "HTTP Basic auth with the API key as the username and an empty password. Needs a Companies House account to create a key.",
      "pricing": "free",
      "pricingNotes": "Free. 600 requests per 5 minutes per key, then 429 (https://developer-specs.company-information.service.gov.uk).",
      "priceSummary": "Free",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-26"
      },
      "docsUrl": "https://developer-specs.company-information.service.gov.uk",
      "openapi": "https://developer-specs.company-information.service.gov.uk/api.ch.gov.uk-specifications/swagger-2.0/spec/swagger.json",
      "capabilities": [
        "data.company"
      ],
      "tags": [
        "official",
        "government",
        "hosted",
        "free",
        "openapi",
        "uk"
      ],
      "lastRelease": "2026-04-27",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 49.3,
        "grade": "D",
        "agentReady": false,
        "rank": 707,
        "ranked": true,
        "rankOf": 842,
        "categoryRank": 5,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 25,
          "payments": 40,
          "reliability": 38,
          "schema": 60,
          "security": 45,
          "transparency": 69
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "The statutory register itself, 5,516,377 companies in June 2026. A person has to create the account and key.",
        "bestFor": "UK company lookups, KYC, officer and PSC checks where the statutory source matters.",
        "strengths": [
          "The statutory register itself, 5,516,377 companies in June 2026",
          "Free, with a Swagger 2.0 spec and a streaming API for changes",
          "Keys sent in a header, restrictable by IP address and domain, and easy to rotate",
          "Retention and processors set out in a charter updated 7 September 2026",
          "Error keys and description lookups published in a public repository"
        ],
        "weaknesses": [
          "A person has to create the account and key",
          "600 requests per five minutes per key, and the whole window returns 429 once you go over",
          "No status page, SLA, llms.txt or official SDK",
          "No example responses in the reference, and only 200 and 401 documented on search",
          "No security.txt or vulnerability reporting route found"
        ],
        "agentNotes": [
          "Send the key as the Basic auth username with an empty password. `curl -u KEY:` works",
          "Search with `/search/companies?q=` and page with `items_per_page` and `start_index`, then fetch `/company/{number}`",
          "Pad company numbers to 8 characters with leading zeros",
          "Stop on the first 429 and wait out the five-minute window, since every call until it resets also fails",
          "Map filing and error codes to text with the public api-enumerations YAML rather than guessing"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 49.3
          }
        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 25,
          "payments": 40,
          "reliability": 38,
          "schema": 60,
          "security": 45,
          "transparency": 67
        },
        "provenanceScore": 71,
        "dataQualityScore": 97
      },
      "connect": {
        "http": "curl -u \"$CH_API_KEY:\" \"https://api.company-information.service.gov.uk/search/companies?q=anchor%20terminal\""
      },
      "letme": {
        "capability": "https://letme.dev/data.company",
        "tool": "https://letme.dev/companies-house"
      },
      "area": "web-data",
      "provenance": {
        "legalEntity": "Companies House, an executive agency of the Department for Business and Trade",
        "domain": "company-information.service.gov.uk",
        "domainRegistered": "",
        "domainNote": ".gov.uk has no public RDAP, and a government domain scores in full on age.",
        "official": true,
        "endpointOnVendorDomain": true,
        "terms": "https://developer.company-information.service.gov.uk/developer-guidelines",
        "privacy": "https://www.gov.uk/government/organisations/companies-house/about/personal-information-charter",
        "statusPage": "",
        "changelog": "https://forum.companieshouse.gov.uk/c/api-changes/7",
        "securityTxt": "none",
        "checked": "2026-09-26",
        "score": 71
      },
      "dataQuality": {
        "coverage": "Every company on the UK register, 5,516,377 in June 2026, with officers, filings, charges and PSCs",
        "coverageRating": 5,
        "freshness": "Real time as filings are accepted, with a streaming API for changes",
        "freshnessClass": "realtime",
        "history": "Live companies kept indefinitely. Dissolved companies kept 20 years before transfer to the public records office, and online records are now kept permanently, per the personal information charter",
        "historyYears": 20,
        "methodology": "https://www.gov.uk/guidance/searching-the-companies-house-register",
        "sourcesDisclosed": true,
        "licence": "Register data reusable without conditions. Not the Open Government Licence, which covers Companies House's own material",
        "licenceClass": "clear",
        "standing": "The statutory UK companies register",
        "standingClass": "statutory",
        "reuse": "Companies House says it imposes no rules on how register information is used, so caching and redistribution are fine.",
        "score": 97,
        "checks": null
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/companies-house.json",
      "live": {
        "slug": "companies-house",
        "probe": {
          "target": "https://api.company-information.service.gov.uk",
          "method": "get",
          "lastAt": "2026-10-09T11:46:25.782998667Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 29,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 32,
          "p95ms24h": 69,
          "samples24h": 259,
          "samples30d": 3265,
          "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": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 125,
              "ok": 125
            }
          ]
        },
        "securityTxt": {
          "url": "https://company-information.service.gov.uk/.well-known/security.txt",
          "state": "unknown",
          "checkedAt": "2026-10-08T15:38:55.40401087Z"
        },
        "pages": [
          {
            "url": "https://forum.companieshouse.gov.uk/c/api-changes/7",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:20:29.351943584Z",
            "changedAt": "2026-10-08T18:20:29.351943584Z",
            "fingerprint": "ff06f9819968"
          },
          {
            "url": "https://www.gov.uk/government/organisations/companies-house/about/personal-information-charter",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:28:04.517544923Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "8ce8e5b67871"
          },
          {
            "url": "https://developer.company-information.service.gov.uk/developer-guidelines",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:17:09.484885335Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "79a41a256dc2"
          }
        ],
        "updatedAt": "2026-10-09T11:46:25.782998667Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Alpha Vantage Inc.",
        "b": "Companies House",
        "name": "Vendor"
      },
      {
        "a": "https://www.alphavantage.co/query",
        "b": "https://api.company-information.service.gov.uk",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP, stdio",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Free",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under Alpha Vantage's Terms of Service. The MCP server, CLI and shared client in alphavantage/alpha_vantage_mcp are MIT",
        "b": "none",
        "name": "Licence"
      },
      {
        "a": "yes",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "no",
        "b": "no",
        "name": "llms.txt"
      },
      {
        "a": "io.github.alphavantage/alpha_vantage_mcp",
        "b": "not listed",
        "name": "MCP registry"
      },
      {
        "a": "2026-10-03",
        "b": "2026-04-27",
        "name": "Last release"
      },
      {
        "a": "couldn't be read",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "couldn't be read",
        "b": "no date given",
        "name": "Privacy policy last updated"
      },
      {
        "a": "couldn't be read",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "couldn't be read",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "couldn't be read",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "couldn't be read",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "couldn't be read",
        "b": "not found in the text",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "217 stars, 172 PyPI/wk",
        "b": "none",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "4/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Companies House API scores 49.3 (D) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 6 of 7 scored categories. Alpha Vantage leads on maintenance \u0026 community.",
        "question": "Which is better for AI agents, Alpha Vantage or Companies House API?"
      },
      {
        "answer": "Alpha Vantage takes an API key or an OAuth sign-in. Companies House API needs an API key.",
        "question": "Do Alpha Vantage and Companies House API need an API key?"
      },
      {
        "answer": "Yes. Alpha Vantage has a hosted endpoint at https://www.alphavantage.co/query and Companies House API at https://api.company-information.service.gov.uk.",
        "question": "Can an agent call Alpha Vantage and Companies House API without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Maintenance \u0026 community, 63 against 25"
        ],
        "also": [
          "Runs on your own machine"
        ],
        "goodFor": "A personal research or analysis agent that wants many asset classes, fundamentals, indicators and news sentiment from one key at a flat price.",
        "slug": "alpha-vantage",
        "watchFor": "The REST key is documented only as `apikey=` in the query string, with no scopes and no self-service rotation found"
      },
      {
        "aheadOn": [
          "Reliability, 38 against 30",
          "Schema \u0026 documentation, 60 against 46",
          "Agent ergonomics, 67 against 54",
          "Security \u0026 auth, 45 against 32",
          "Payments \u0026 pricing, 40 against 30",
          "Transparency \u0026 trust, 69 against 48"
        ],
        "also": null,
        "goodFor": "UK company lookups, KYC, officer and PSC checks where the statutory source matters.",
        "slug": "companies-house",
        "watchFor": "A person has to create the account and key"
      }
    ],
    "job": {
      "capability": "data.company",
      "name": "Data company"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-coindesk-data-api.json",
        "title": "Alpha Vantage vs CoinDesk Data API",
        "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-coindesk-data-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-coingecko-x402-api.json",
        "title": "Alpha Vantage vs CoinGecko x402 API",
        "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-coingecko-x402-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.json",
        "title": "Alpha Vantage vs FRED API",
        "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-fred"
      },
      {
        "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-massive.json",
        "title": "Alpha Vantage vs Massive (formerly Polygon.io)",
        "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-massive"
      }
    ],
    "scores": [
      {
        "alpha-vantage": 30,
        "by": 8,
        "companies-house": 38,
        "edge": "companies-house",
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "alpha-vantage": 46,
        "by": 14,
        "companies-house": 60,
        "edge": "companies-house",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "alpha-vantage": 54,
        "by": 13,
        "companies-house": 67,
        "edge": "companies-house",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "alpha-vantage": 32,
        "by": 13,
        "companies-house": 45,
        "edge": "companies-house",
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "alpha-vantage": 30,
        "by": 10,
        "companies-house": 40,
        "edge": "companies-house",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "alpha-vantage": 63,
        "by": 38,
        "companies-house": 25,
        "edge": "alpha-vantage",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "alpha-vantage": 48,
        "by": 21,
        "companies-house": 69,
        "edge": "companies-house",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Companies House API scores 49.3 (D) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 6 of 7 scored categories. Alpha Vantage leads on maintenance \u0026 community. Both do data company.",
    "verdicts": {
      "alpha-vantage": "One GET endpoint covers about 130 documented functions, with a free key at 25 requests a day and an official MCP server whose tools are all marked read-only. The REST key travels only in the query string, errors come back as HTTP 200 with a text message, and no status page, SLA or OpenAPI document was found.",
      "companies-house": "The statutory register itself, 5,516,377 companies in June 2026. A person has to create the account and key."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house",
    "json": "https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house.md",
    "slim": "https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house.min.md"
  },
  "markdown": "Companies House API scores 49.3 (D) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 6 of 7 scored categories. Alpha Vantage leads on maintenance \u0026 community. Both do data company.\n\n- Alpha Vantage: grade E, 41.3/100, rank #799 of 842. Markdown https://www.anchorterminal.com/tools/alpha-vantage.md · JSON https://www.anchorterminal.com/api/v1/tools/alpha-vantage.json\n- Companies House API: grade D, 49.3/100, rank #707 of 842. Markdown https://www.anchorterminal.com/tools/companies-house.md · JSON https://www.anchorterminal.com/api/v1/tools/companies-house.json\n\n## Which one, for what\n\n### Alpha Vantage (E)\n\nGood for: A personal research or analysis agent that wants many asset classes, fundamentals, indicators and news sentiment from one key at a flat price.\n\nAhead on:\n- Maintenance \u0026 community, 63 against 25\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: The REST key is documented only as `apikey=` in the query string, with no scopes and no self-service rotation found\n\n### Companies House API (D)\n\nGood for: UK company lookups, KYC, officer and PSC checks where the statutory source matters.\n\nAhead on:\n- Reliability, 38 against 30\n- Schema \u0026 documentation, 60 against 46\n- Agent ergonomics, 67 against 54\n- Security \u0026 auth, 45 against 32\n- Payments \u0026 pricing, 40 against 30\n- Transparency \u0026 trust, 69 against 48\n\nWatch for: A person has to create the account and key\n\n\n## Score by category\n\n| Category | Weight | Alpha Vantage | Companies House API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 30 | 38 | Companies House API +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 46 | 60 | Companies House API +14 |\n| Agent ergonomics | 13% (16.2 this run) | 54 | 67 | Companies House API +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 32 | 45 | Companies House API +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | Companies House API +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 63 | 25 | Alpha Vantage +38 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 48 | 69 | Companies House API +21 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **41.3 · E** | **49.3 · D** | |\n\n## Facts side by side\n\n| Fact | Alpha Vantage | Companies House API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Alpha Vantage Inc. | Companies House |\n| Hosted endpoint | `https://www.alphavantage.co/query` | `https://api.company-information.service.gov.uk` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Free |\n| x402 | no | no |\n| Licence | Proprietary service under Alpha Vantage's Terms of Service. The MCP server, CLI and shared client in alphavantage/alpha_vantage_mcp are MIT | none |\n| Read-only variant documented | yes | no |\n| llms.txt | no | no |\n| MCP registry | `io.github.alphavantage/alpha_vantage_mcp` | not listed |\n| Last release | 2026-10-03 | 2026-04-27 |\n| Terms last updated | couldn't be read | no date given |\n| Privacy policy last updated | couldn't be read | no date given |\n| Customer content may train models | couldn't be read | not found in the text |\n| Terms restrict automated access | couldn't be read | not found in the text |\n| Terms restrict benchmarking | couldn't be read | not found in the text |\n| Terms or service can change without notice | couldn't be read | not found in the text |\n| Arbitration or class-action waiver | couldn't be read | not found in the text |\n| Popularity | 217 stars, 172 PyPI/wk | none |\n| Agent reviews | none | 4/5 (2) |\n\n## Verdicts\n\n**Alpha Vantage.** One GET endpoint covers about 130 documented functions, with a free key at 25 requests a day and an official MCP server whose tools are all marked read-only. The REST key travels only in the query string, errors come back as HTTP 200 with a text message, and no status page, SLA or OpenAPI document was found.\n\n**Companies House API.** The statutory register itself, 5,516,377 companies in June 2026. A person has to create the account and key.\n\n## Before you call either\n\n### Alpha Vantage\n\n1. Check every 200 response for `Error Message`, `Information` or `Note` keys before parsing data. The API does not signal failures or limits by status code\n2. Budget 25 requests a day on a free key. Real-time, 15-minute delayed and intraday US data, index data and several indicators need a premium plan\n3. Keep `outputsize=compact` unless full history is needed, and ask for `datatype=csv` on long series to cut tokens\n4. Use the hosted MCP server with OAuth at `https://mcp.alphavantage.co/mcp`. The `?apikey=` MCP URL is marked deprecated\n5. Confirm the owner's use is personal and non-commercial, or that a commercial agreement exists, before acting for a business\n\n### Companies House API\n\n1. Send the key as the Basic auth username with an empty password. `curl -u KEY:` works\n2. Search with `/search/companies?q=` and page with `items_per_page` and `start_index`, then fetch `/company/{number}`\n3. Pad company numbers to 8 characters with leading zeros\n4. Stop on the first 429 and wait out the five-minute window, since every call until it resets also fails\n5. Map filing and error codes to text with the public api-enumerations YAML rather than guessing\n\n## Questions\n\n### Which is better for AI agents, Alpha Vantage or Companies House API?\n\nCompanies House API scores 49.3 (D) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 6 of 7 scored categories. Alpha Vantage leads on maintenance \u0026 community.\n\n### Do Alpha Vantage and Companies House API need an API key?\n\nAlpha Vantage takes an API key or an OAuth sign-in. Companies House API needs an API key.\n\n### Can an agent call Alpha Vantage and Companies House API without installing anything?\n\nYes. Alpha Vantage has a hosted endpoint at https://www.alphavantage.co/query and Companies House API at https://api.company-information.service.gov.uk.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house.json, and with the fewest tokens: https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"alpha-vantage\", \"b\": \"companies-house\"}`. From a terminal: `anchor compare alpha-vantage companies-house`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/alpha-vantage.json and https://www.anchorterminal.com/api/v1/tools/companies-house.json\n\n## Other comparisons with Alpha Vantage or Companies House API\n\n- [Alpha Vantage vs CoinDesk Data API](https://www.anchorterminal.com/compare/alpha-vantage-vs-coindesk-data-api.md)\n- [Alpha Vantage vs CoinGecko x402 API](https://www.anchorterminal.com/compare/alpha-vantage-vs-coingecko-x402-api.md)\n- [Alpha Vantage vs FRED API](https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.md)\n- [Alpha Vantage vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/alpha-vantage-vs-massive.md)\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-09",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.4",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Compare",
        "url": "https://www.anchorterminal.com/compare/"
      },
      {
        "name": "Alpha Vantage vs Companies House API",
        "url": ""
      }
    ],
    "description": "Companies House API scores 49.3 (D) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 6 of 7 scored categories. Alpha Vantage leads on maintenance \u0026 community. Both do data company. Category scores, facts, verdicts and agent notes side by side.",
    "facts": [
      "Alpha Vantage E 41.3",
      "Companies House API D 49.3",
      "scores"
    ],
    "h1": "Alpha Vantage vs Companies House API",
    "image": "https://www.anchorterminal.com/assets/og/compare-alpha-vantage-vs-companies-house.png",
    "path": "/compare/alpha-vantage-vs-companies-house",
    "published": "2026-10-01",
    "section": "tools",
    "title": "Alpha Vantage vs Companies House API for AI agents, E 41.3 vs D 49.3",
    "toc": null,
    "updated": "2026-10-09",
    "url": "https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house"
  },
  "tokens": {
    "markdown": 1950,
    "slim": 780
  },
  "version": 1
}