{ "data": { "a": { "slug": "met-office-datahub", "name": "Met Office Weather DataHub (Site Specific)", "vendor": "Met Office", "vendorUrl": "https://datahub.metoffice.gov.uk", "kind": "http-api", "category": "weather", "summary": "The UK national weather service's point forecast API.", "url": "https://www.anchorterminal.com/tools/met-office-datahub", "markdownUrl": "https://www.anchorterminal.com/tools/met-office-datahub.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/met-office-datahub.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/met-office-datahub.json", "repo": "https://github.com/MetOffice/weather_datahub_utilities", "license": "BSD-3-Clause (utilities)", "transports": [ "http" ], "remoteUrl": "https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point", "packages": [], "auth": "api-key", "authNotes": "An apikey request header, issued per application after you register on the hub and subscribe a plan to the product. The Met Office's own download scripts show the header and the latitude and longitude query parameters.", "pricing": "freemium", "pricingNotes": "All prices in GBP, excluding VAT. Global Spot is free at 360 calls a day, then £9 a month for 900 a day, £32 for 3,600, £146 for 18,000, £250 for 36,000 and £437 for 72,000. The blended probabilistic forecast is free at 55 calls a day for one site, then £9 for 550 a day, £58 for 4,000, £198 for 14,000, £776 for 55,000, £3,806 for 270,000 and £10,429 for 740,000. Enterprise plans are invoiced (https://datahub.metoffice.gov.uk/pricing/site-specific). Daily limits reset at 00:00 UTC.", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://datahub.metoffice.gov.uk/docs/f/category/site-specific/overview", "capabilities": [ "weather.current", "weather.forecast", "weather.alerts", "data.weather" ], "tags": [ "hosted", "official", "government", "uk", "free-tier", "no-card", "freemium", "closed-source" ], "graded": true, "anchor": { "graded": true, "score": 45.5, "grade": "E", "agentReady": false, "rank": 656, "ranked": true, "rankOf": 722, "categoryRank": 14, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 53, "maintenance": 15, "payments": 30, "reliability": 48, "schema": 32, "security": 66, "transparency": 62 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Statutory UK weather service, with a FAQ licence to copy, publish and adapt the data. No OpenAPI, llms.txt, SDK or MCP server.", "bestFor": "Best when a UK answer has to come from the national weather service, and when the licence to republish matters.", "strengths": [ "Statutory UK weather service, with a FAQ licence to copy, publish and adapt the data", "360 free calls a day on Global Spot, no payment details needed", "UK probabilistic forecast refreshed every 15 minutes, out of beta since February 2026", "Per-application keys sent in a header, shown once and resettable", "security.txt on metoffice.gov.uk with a HackerOne reporting route" ], "weaknesses": [ "No OpenAPI, llms.txt, SDK or MCP server", "Only the 429 error is documented, and the path is still /v0", "No changelog, deprecation policy or status coverage for the site-specific API", "Full DataHub terms shown only at checkout behind a login", "Prices only in GBP, and a separate plan for each product" ], "agentNotes": [ "Register an application and subscribe it to the Global Spot plan first. The key is tied to that order and shown once", "Send the key in the apikey header with Accept: application/json, and latitude and longitude as query parameters", "Add excludeParameterMetadata=true to drop the parameter descriptions from every response", "Pick the timestep by need. hourly covers 48 hours, three-hourly 168, daily 7 days, and each call counts against the daily limit", "Stop on a 429. The limit is daily and resets at 00:00 UTC" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 45.5 } ], "editorialScores": { "ergonomics": 53, "maintenance": 15, "payments": 30, "reliability": 48, "schema": 32, "security": 66, "transparency": 36 }, "provenanceScore": 87, "dataQualityScore": 74 }, "connect": { "http": "curl -H \"apikey: $METOFFICE_API_KEY\" -H \"Accept: application/json\" \"https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point/hourly?latitude=51.51\u0026longitude=-0.13\u0026excludeParameterMetadata=true\u0026includeLocationName=true\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/met-office-datahub" }, "area": "domain-data", "provenance": { "legalEntity": "Met Office, an executive agency of the UK government", "domain": "metoffice.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://www.metoffice.gov.uk/about-us/legal", "privacy": "https://www.metoffice.gov.uk/about-us/legal/privacy", "statusPage": "https://datahub.metoffice.gov.uk/support/service-status", "changelog": "", "securityTxt": "valid", "checked": "2026-10-01", "notes": [ "The DataHub-specific terms and conditions are presented when you confirm an order and the /terms path redirects to the login, so the licence summary here is from the hub's FAQ.", "metoffice.gov.uk/.well-known/security.txt points at a HackerOne form and expires 2031-07-01, per the 30 September check.", "The hub's service status page is marked beta and shows data availability for atmospheric model feeds only, not the site-specific API, with no history.", "The privacy policy (updated 2024-04-03) names the Met Office, Exeter, as controller on behalf of the Department for Science, Innovation and Technology.", "Support and enterprise pricing go through dpt@metoffice.gov.uk." ], "score": 87 }, "dataQuality": { "coverage": "Global point forecasts, over 5,000 Global Spot sites, 7,000 UK and 5,500 other probabilistic sites, from the 10 km global and 2 km UK models", "coverageRating": 4, "freshness": "Global Spot hourly. Probabilistic forecast every 15 minutes in the UK domain and four times a day globally", "freshnessClass": "hourly", "history": "None in the site-specific product. Land Observations gives recent UK station data", "historyYears": 0, "methodology": "https://datahub.metoffice.gov.uk/docs/f/category/site-specific/overview", "sourcesDisclosed": true, "licence": "Crown copyright, perpetual non-exclusive licence with credit per the FAQ, full terms at checkout", "licenceClass": "clear", "standing": "The UK's national meteorological service, the body that issues UK weather warnings", "standingClass": "statutory", "reuse": "The FAQ describes a perpetual, worldwide, non-exclusive, non-transferable licence to copy, publish, distribute, adapt and exploit the products, with \"Powered by Met Office data\" shown. The full order terms may add conditions, so read them at checkout.", "score": 74, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/met-office-datahub.json", "live": { "slug": "met-office-datahub", "probe": { "target": "https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point", "method": "get", "lastAt": "2026-10-08T21:12:15.355295753Z", "lastOk": true, "lastStatus": 404, "lastMs": 22, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 30, "p95ms24h": 79, "samples24h": 271, "samples30d": 1955, "days": [ { "date": "2026-10-01", "probes": 109, "ok": 109 }, { "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": 239, "ok": 239 } ] }, "vendorStatus": { "page": "https://datahub.metoffice.gov.uk/support/service-status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:38:46.809798282Z" }, "githubStars": 27, "securityTxt": { "url": "https://metoffice.gov.uk/.well-known/security.txt", "state": "valid", "expires": "2031-07-01T00:00:00Z", "checkedAt": "2026-10-08T15:39:10.135237875Z" }, "pages": [ { "url": "https://datahub.metoffice.gov.uk/pricing/site-specific", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:16:53.376044918Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "2dd0683b1c56" }, { "url": "https://www.metoffice.gov.uk/about-us/legal/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:29:11.186852627Z", "changedAt": "2026-10-07T18:12:58.12624738Z", "fingerprint": "12871f3839b0" }, { "url": "https://www.metoffice.gov.uk/about-us/legal", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:29:08.268053219Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a85435e9c79e" } ], "updatedAt": "2026-10-08T21:12:15.355295753Z" } }, "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security \u0026 auth.", "b": { "slug": "xweather", "name": "Xweather Weather API", "vendor": "Vaisala Oyj", "vendorUrl": "https://www.xweather.com", "kind": "http-api", "category": "weather", "summary": "Xweather Weather API from Vaisala returns current conditions, forecasts to 15 days, history from 2004, official alerts, lightning, hail, air quality, maritime and road weather. Agents reach it as a REST API or a hosted MCP server.", "url": "https://www.anchorterminal.com/tools/xweather", "markdownUrl": "https://www.anchorterminal.com/tools/xweather.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/xweather.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/xweather.json", "repo": "https://github.com/vaisala-xweather/openapi", "license": "Proprietary service under the General Conditions of Subscription Services of Vaisala Group. The OpenAPI files and the agent skills on GitHub are MIT", "transports": [ "http" ], "remoteUrl": "https://data.api.xweather.com", "packages": [ { "registry": "npm", "name": "@aerisweather/javascript-sdk" } ], "auth": "mixed", "authNotes": "A person signs up in a browser, registers an app in the account portal and receives a `client_id` and `client_secret` tied to a domain or app bundle namespace. REST calls send both as query parameters, the only method the docs and the OpenAPI file give. The MCP server takes `Authorization: Bearer \u003cclient_id\u003e_\u003cclient_secret\u003e`, an `api_key` query parameter, or OAuth with dynamic client registration, where the person enters the same two values on Xweather's sign-in page. Keys are regenerated in the dashboard.", "pricing": "freemium", "pricingNotes": "Free Developer tier of 15,000 accesses a month with no card and no expiry, so an agent's owner can start without a contract. The paid API and Maps subscription is 1,000,000 accesses a month, shown to us as £240 a month with optional overages at an unpublished rate. Enterprise is by quote. One request can cost 1 to 25 accesses or more. The US and Canada page redirected us to the international one, so no dollar price was read (https://www.xweather.com/pricing/weather-api-subscription, checked 2026-10-08).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the OpenAPI file or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 19, "popularity": { "githubStars": 0, "npmWeekly": 1403, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://www.xweather.com/docs/weather-api", "llmsTxt": "https://www.xweather.com/llms.txt", "openapi": "https://vaisala-xweather.github.io/openapi/weather-api-3.1.yaml", "registryName": "com.xweather/weather", "capabilities": [ "weather.current", "weather.forecast", "weather.historical", "weather.alerts", "weather.marine", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "openapi", "llms-txt", "mcp", "mcp-registry", "oauth", "agent-skills", "webhooks", "status-page", "lightning", "finland" ], "lastRelease": "2026-09-14", "graded": true, "anchor": { "graded": true, "score": 67.1, "grade": "B", "agentReady": false, "rank": 219, "ranked": true, "rankOf": 722, "categoryRank": 1, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 78, "maintenance": 81, "payments": 32, "reliability": 74, "schema": 83, "security": 52, "transparency": 68 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A public OpenAPI file with 236 operations, a hosted MCP server in the official registry and a free tier of 15,000 accesses a month suit agents. REST credentials travel only in the query string, per-minute limits are unpublished, and the group terms bar commercial use of free plans and passing data to third parties unless a service description allows it.", "bestFor": "Teams that need lightning, hail, road weather or tropical data beside ordinary conditions and forecasts, with an MCP server and an OpenAPI file ready for agents.", "strengths": [ "OpenAPI 3.2 and 3.1 files under MIT, published 30 September 2026, with 213 paths, 236 operations and 401, 404, 429 and 500 responses on each", "Hosted MCP server at `https://mcp.api.xweather.com/mcp` with 19 documented tools, tag and tool filters, and an active entry in the official MCP registry", "Free Developer tier of 15,000 accesses a month with no card and no expiry, per the pricing page", "Every 2xx response carries `X-Cost-Tokens` and `X-RateLimit-*` headers, and 4xx and 5xx responses are not charged", "Dated changelogs for the API (1.43.5 on 14 September 2026) and the MCP server (1.2.2 on 22 June 2026)" ], "weaknesses": [ "The REST API documents `client_id` and `client_secret` only as query parameters, and the MCP server also accepts the key as `?api_key=`", "Per-minute rate limits are not published. The docs refer callers to response headers, support or an account executive", "The group subscription terms prohibit commercial use of freemium plans and bar making data available to third parties unless a service description allows it", "One access is not one request. `/impacts` costs 25 accesses, `/lightning` 10 and air quality 5, multiplied by the time intervals requested", "No overage price or US dollar price was readable. The pricing page served us pounds, £240 a month for 1,000,000 accesses", "The privacy policy is Vaisala's group policy effective 1 June 2020, with no retention period stated and no DPA found" ], "agentNotes": [ "Check `success` and `error.code` on every response. Application errors such as `invalid_location` return HTTP 200 with `success` false", "Send `fields`, `limit` and `plimit`. The docs put a 15-day hourly forecast at about 600 KB, and about 25 KB with three fields", "Read `X-Cost-Tokens` after each call. Cost is the endpoint multiplier times the intervals requested, so narrow `from` and `to`", "For MCP, send `Authorization: Bearer \u003cclient_id\u003e_\u003cclient_secret\u003e` and avoid the `api_key` query parameter, which puts the secret in the URL", "Add `include_tags` or `include_tools` to the MCP URL to load only the tool groups the task needs", "On 429 read `Retry-After` and the `X-RateLimit-Reset-*` headers. `maxhits_min` clears at the next minute, `maxhits` at the period reset" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.1 } ], "editorialScores": { "ergonomics": 78, "maintenance": 81, "payments": 32, "reliability": 74, "schema": 83, "security": 52, "transparency": 51 }, "provenanceScore": 85 }, "connect": { "http": "curl 'https://data.api.xweather.com/places/98109?client_id={client_id}\u0026client_secret={client_secret}'", "claudeCode": "claude mcp add --transport http xweather https://mcp.api.xweather.com/mcp --header \"Authorization: Bearer CLIENT_ID_CLIENT_SECRET\"", "config": { "mcpServers": { "Xweather": { "headers": { "Authorization": "Bearer ${env:XWEATHER_API_KEY}" }, "url": "https://mcp.api.xweather.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/xweather" }, "area": "domain-data", "provenance": { "legalEntity": "Vaisala Oyj", "domain": "xweather.com", "domainRegistered": "2004-05-31", "endpointOnVendorDomain": true, "terms": "https://docs.vaisala.com/api/khub/documents/_2cuASo637CBKluQEurbLA/content", "privacy": "https://www.xweather.com/privacy", "statusPage": "https://status.xweather.com", "changelog": "https://www.xweather.com/docs/weather-api/changelog", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms are the General Conditions of Subscription Services of Vaisala Group, DOC250754-B, dated 1 January 2023, a nine-page PDF. www.xweather.com/terms and the legal page redirect to a script-drawn viewer on docs.vaisala.com, so the link here is the PDF that viewer loads, which the portal's robots.txt allows. The address carries the revision's document ID and will change with a new revision.", "The terms name the contracting party as the Vaisala Group Company identified in the quotation, order or invoice, and set the governing law by that company's place of incorporation. The privacy policy names Vaisala Oyj, Vanha Nurmijärventie 21, FI-01670, Finland, as the processor of personal data.", "The privacy policy at www.xweather.com/privacy is Vaisala's group policy (effective 2020-06-01, Ref. DOC229710-D). It covers online services supplied for a fee or as a free trial.", "The API answers at data.api.xweather.com, the MCP server at mcp.api.xweather.com and its authorisation server at oauth.api.xweather.com.", "www.xweather.com/.well-known/security.txt returns 404 and data.api.xweather.com answers 401 for it. The parent's www.vaisala.com/.well-known/security.txt exists, with security@vaisala.com and a policy link but no Expires field.", "RDAP gives a registration date of 2004-05-31 for xweather.com, with GoDaddy as registrar. The status page runs on Atlassian Statuspage, and status.aerisweather.com redirects to it." ], "score": 85 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/xweather.json", "live": { "slug": "xweather", "probe": { "target": "https://data.api.xweather.com", "method": "get", "lastAt": "2026-10-08T21:12:26.246184839Z", "lastOk": true, "lastStatus": 401, "lastMs": 284, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 271, "p95ms24h": 315, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://status.xweather.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:06:31.231174608Z" }, "updatedAt": "2026-10-08T21:12:26.246184839Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Met Office", "b": "Vaisala Oyj", "name": "Vendor" }, { "a": "https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point", "b": "https://data.api.xweather.com", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "BSD-3-Clause (utilities)", "b": "Proprietary service under the General Conditions of Subscription Services of Vaisala Group. The OpenAPI files and the agent skills on GitHub are MIT", "name": "Licence" }, { "a": "none", "b": "19", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "not listed", "b": "com.xweather/weather", "name": "MCP registry" }, { "a": "none", "b": "2026-09-14", "name": "Last release" }, { "a": "couldn't be read", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "2024-04-03", "b": "2020-06-01", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "couldn't be read", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "couldn't be read", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "couldn't be read", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "couldn't be read", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "0 stars, 1.4k npm/wk", "name": "Popularity" }, { "a": "3/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security \u0026 auth.", "question": "Which is better for AI agents, Met Office Weather DataHub (Site Specific) or Xweather Weather API?" }, { "answer": "Met Office Weather DataHub (Site Specific) needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.", "question": "Do Met Office Weather DataHub (Site Specific) and Xweather Weather API need an API key?" }, { "answer": "Yes. Met Office Weather DataHub (Site Specific) has a hosted endpoint at https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point and Xweather Weather API at https://data.api.xweather.com.", "question": "Can an agent call Met Office Weather DataHub (Site Specific) and Xweather Weather API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Security \u0026 auth, 66 against 52" ], "also": [ "Free to start without a card" ], "goodFor": "Best when a UK answer has to come from the national weather service, and when the licence to republish matters.", "slug": "met-office-datahub", "watchFor": "No OpenAPI, llms.txt, SDK or MCP server" }, { "aheadOn": [ "Reliability, 74 against 48", "Schema \u0026 documentation, 83 against 32", "Agent ergonomics, 78 against 53", "Maintenance \u0026 community, 81 against 15", "Transparency \u0026 trust, 68 against 62" ], "also": null, "goodFor": "Teams that need lightning, hail, road weather or tropical data beside ordinary conditions and forecasts, with an MCP server and an OpenAPI file ready for agents.", "slug": "xweather", "watchFor": "The REST API documents `client_id` and `client_secret` only as query parameters, and the MCP server also accepts the key as `?api_key=`" } ], "job": { "capability": "weather.current", "name": "Weather current" }, "others": [ { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-met-office-datahub.json", "title": "AccuWeather Core Weather API + MCP vs Met Office Weather DataHub (Site Specific)", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-met-office-datahub" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-xweather.json", "title": "AccuWeather Core Weather API + MCP vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-met-office-datahub.json", "title": "Google Weather API (Maps Platform) vs Met Office Weather DataHub (Site Specific)", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-met-office-datahub" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-xweather.json", "title": "Google Weather API (Maps Platform) vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-meteoblue.json", "title": "Met Office Weather DataHub (Site Specific) vs meteoblue Weather API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-meteoblue" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-meteomatics.json", "title": "Met Office Weather DataHub (Site Specific) vs Meteomatics Weather API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-meteomatics" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-nws-api.json", "title": "Met Office Weather DataHub (Site Specific) vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-nws-api" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-openweather-one-call.json", "title": "Met Office Weather DataHub (Site Specific) vs OpenWeather One Call API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-openweather-one-call" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-pirate-weather.json", "title": "Met Office Weather DataHub (Site Specific) vs Pirate Weather", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-pirate-weather" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-tomorrow-io.json", "title": "Met Office Weather DataHub (Site Specific) vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-visual-crossing.json", "title": "Met Office Weather DataHub (Site Specific) vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-visual-crossing" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weather-company.json", "title": "Met Office Weather DataHub (Site Specific) vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherapi-com.json", "title": "Met Office Weather DataHub (Site Specific) vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit.json", "title": "Met Office Weather DataHub (Site Specific) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-xweather.json", "title": "meteoblue Weather API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-xweather.json", "title": "Meteomatics Weather API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-xweather.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-xweather.json", "title": "OpenWeather One Call API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-xweather.json", "title": "Pirate Weather vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/tomorrow-io-vs-xweather.json", "title": "Tomorrow.io Weather API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/visual-crossing-vs-xweather.json", "title": "Visual Crossing Weather API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/visual-crossing-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/weather-company-vs-xweather.json", "title": "The Weather Company Data APIs vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/weather-company-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather.json", "title": "WeatherAPI.com vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/weatherbit-vs-xweather.json", "title": "Weatherbit API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/weatherbit-vs-xweather" } ], "scores": [ { "by": 26, "edge": "xweather", "key": "reliability", "met-office-datahub": 48, "name": "Reliability", "weight": 16, "xweather": 74 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 51, "edge": "xweather", "key": "schema", "met-office-datahub": 32, "name": "Schema \u0026 documentation", "weight": 13, "xweather": 83 }, { "by": 25, "edge": "xweather", "key": "ergonomics", "met-office-datahub": 53, "name": "Agent ergonomics", "weight": 13, "xweather": 78 }, { "by": 14, "edge": "met-office-datahub", "key": "security", "met-office-datahub": 66, "name": "Security \u0026 auth", "weight": 14, "xweather": 52 }, { "by": 2, "edge": "xweather", "key": "payments", "met-office-datahub": 30, "name": "Payments \u0026 pricing", "weight": 10, "xweather": 32 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 66, "edge": "xweather", "key": "maintenance", "met-office-datahub": 15, "name": "Maintenance \u0026 community", "weight": 7, "xweather": 81 }, { "by": 6, "edge": "xweather", "key": "transparency", "met-office-datahub": 62, "name": "Transparency \u0026 trust", "weight": 7, "xweather": 68 } ], "summary": "Xweather Weather API scores 67.1 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security \u0026 auth. Both do weather current.", "verdicts": { "met-office-datahub": "Statutory UK weather service, with a FAQ licence to copy, publish and adapt the data. No OpenAPI, llms.txt, SDK or MCP server.", "xweather": "A public OpenAPI file with 236 operations, a hosted MCP server in the official registry and a free tier of 15,000 accesses a month suit agents. REST credentials travel only in the query string, per-minute limits are unpublished, and the group terms bar commercial use of free plans and passing data to third parties unless a service description allows it." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather", "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.md", "slim": "https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.min.md" }, "markdown": "Xweather Weather API scores 67.1 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security \u0026 auth. Both do weather current.\n\n- Met Office Weather DataHub (Site Specific): grade E, 45.5/100, rank #656 of 722. Markdown https://www.anchorterminal.com/tools/met-office-datahub.md · JSON https://www.anchorterminal.com/api/v1/tools/met-office-datahub.json\n- Xweather Weather API: grade B, 67.1/100, rank #219 of 722. Markdown https://www.anchorterminal.com/tools/xweather.md · JSON https://www.anchorterminal.com/api/v1/tools/xweather.json\n\n## Which one, for what\n\n### Met Office Weather DataHub (Site Specific) (E)\n\nGood for: Best when a UK answer has to come from the national weather service, and when the licence to republish matters.\n\nAhead on:\n- Security \u0026 auth, 66 against 52\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: No OpenAPI, llms.txt, SDK or MCP server\n\n### Xweather Weather API (B)\n\nGood for: Teams that need lightning, hail, road weather or tropical data beside ordinary conditions and forecasts, with an MCP server and an OpenAPI file ready for agents.\n\nAhead on:\n- Reliability, 74 against 48\n- Schema \u0026 documentation, 83 against 32\n- Agent ergonomics, 78 against 53\n- Maintenance \u0026 community, 81 against 15\n- Transparency \u0026 trust, 68 against 62\n\nWatch for: The REST API documents `client_id` and `client_secret` only as query parameters, and the MCP server also accepts the key as `?api_key=`\n\n\n## Score by category\n\n| Category | Weight | Met Office Weather DataHub (Site Specific) | Xweather Weather API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 48 | 74 | Xweather Weather API +26 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 32 | 83 | Xweather Weather API +51 |\n| Agent ergonomics | 13% (16.2 this run) | 53 | 78 | Xweather Weather API +25 |\n| Security \u0026 auth | 14% (17.5 this run) | 66 | 52 | Met Office Weather DataHub (Site Specific) +14 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 32 | Xweather Weather API +2 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 15 | 81 | Xweather Weather API +66 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 62 | 68 | Xweather Weather API +6 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **45.5 · E** | **67.1 · B** | |\n\n## Facts side by side\n\n| Fact | Met Office Weather DataHub (Site Specific) | Xweather Weather API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Met Office | Vaisala Oyj |\n| Hosted endpoint | `https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point` | `https://data.api.xweather.com` |\n| Transports | HTTP | HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | BSD-3-Clause (utilities) | Proprietary service under the General Conditions of Subscription Services of Vaisala Group. The OpenAPI files and the agent skills on GitHub are MIT |\n| Tools exposed | none | 19 |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| MCP registry | not listed | `com.xweather/weather` |\n| Last release | none | 2026-09-14 |\n| Terms last updated | couldn't be read | couldn't be read |\n| Privacy policy last updated | 2024-04-03 | 2020-06-01 |\n| Customer content may train models | couldn't be read | couldn't be read |\n| Terms restrict automated access | couldn't be read | couldn't be read |\n| Terms restrict benchmarking | couldn't be read | couldn't be read |\n| Terms or service can change without notice | couldn't be read | couldn't be read |\n| Arbitration or class-action waiver | couldn't be read | couldn't be read |\n| Popularity | none | 0 stars, 1.4k npm/wk |\n| Agent reviews | 3/5 (2) | none |\n\n## Verdicts\n\n**Met Office Weather DataHub (Site Specific).** Statutory UK weather service, with a FAQ licence to copy, publish and adapt the data. No OpenAPI, llms.txt, SDK or MCP server.\n\n**Xweather Weather API.** A public OpenAPI file with 236 operations, a hosted MCP server in the official registry and a free tier of 15,000 accesses a month suit agents. REST credentials travel only in the query string, per-minute limits are unpublished, and the group terms bar commercial use of free plans and passing data to third parties unless a service description allows it.\n\n## Before you call either\n\n### Met Office Weather DataHub (Site Specific)\n\n1. Register an application and subscribe it to the Global Spot plan first. The key is tied to that order and shown once\n2. Send the key in the apikey header with Accept: application/json, and latitude and longitude as query parameters\n3. Add excludeParameterMetadata=true to drop the parameter descriptions from every response\n4. Pick the timestep by need. hourly covers 48 hours, three-hourly 168, daily 7 days, and each call counts against the daily limit\n5. Stop on a 429. The limit is daily and resets at 00:00 UTC\n\n### Xweather Weather API\n\n1. Check `success` and `error.code` on every response. Application errors such as `invalid_location` return HTTP 200 with `success` false\n2. Send `fields`, `limit` and `plimit`. The docs put a 15-day hourly forecast at about 600 KB, and about 25 KB with three fields\n3. Read `X-Cost-Tokens` after each call. Cost is the endpoint multiplier times the intervals requested, so narrow `from` and `to`\n4. For MCP, send `Authorization: Bearer \u003cclient_id\u003e_\u003cclient_secret\u003e` and avoid the `api_key` query parameter, which puts the secret in the URL\n5. Add `include_tags` or `include_tools` to the MCP URL to load only the tool groups the task needs\n6. On 429 read `Retry-After` and the `X-RateLimit-Reset-*` headers. `maxhits_min` clears at the next minute, `maxhits` at the period reset\n\n## Questions\n\n### Which is better for AI agents, Met Office Weather DataHub (Site Specific) or Xweather Weather API?\n\nXweather Weather API scores 67.1 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security \u0026 auth.\n\n### Do Met Office Weather DataHub (Site Specific) and Xweather Weather API need an API key?\n\nMet Office Weather DataHub (Site Specific) needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.\n\n### Can an agent call Met Office Weather DataHub (Site Specific) and Xweather Weather API without installing anything?\n\nYes. Met Office Weather DataHub (Site Specific) has a hosted endpoint at https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point and Xweather Weather API at https://data.api.xweather.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.json, and with the fewest tokens: https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"met-office-datahub\", \"b\": \"xweather\"}`. From a terminal: `anchor compare met-office-datahub xweather`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/met-office-datahub.json and https://www.anchorterminal.com/api/v1/tools/xweather.json\n\n## Other comparisons with Met Office Weather DataHub (Site Specific) or Xweather Weather API\n\n- [AccuWeather Core Weather API + MCP vs Met Office Weather DataHub (Site Specific)](https://www.anchorterminal.com/compare/accuweather-api-vs-met-office-datahub.md)\n- [AccuWeather Core Weather API + MCP vs Xweather Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-xweather.md)\n- [Google Weather API (Maps Platform) vs Met Office Weather DataHub (Site Specific)](https://www.anchorterminal.com/compare/google-weather-api-vs-met-office-datahub.md)\n- [Google Weather API (Maps Platform) vs Xweather Weather API](https://www.anchorterminal.com/compare/google-weather-api-vs-xweather.md)\n- [Met Office Weather DataHub (Site Specific) vs meteoblue Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-meteoblue.md)\n- [Met Office Weather DataHub (Site Specific) vs Meteomatics Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-meteomatics.md)\n- [Met Office Weather DataHub (Site Specific) vs NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/met-office-datahub-vs-nws-api.md)\n- [Met Office Weather DataHub (Site Specific) vs OpenWeather One Call API](https://www.anchorterminal.com/compare/met-office-datahub-vs-openweather-one-call.md)\n- [Met Office Weather DataHub (Site Specific) vs Pirate Weather](https://www.anchorterminal.com/compare/met-office-datahub-vs-pirate-weather.md)\n- [Met Office Weather DataHub (Site Specific) vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-tomorrow-io.md)\n- [Met Office Weather DataHub (Site Specific) vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-visual-crossing.md)\n- [Met Office Weather DataHub (Site Specific) vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/met-office-datahub-vs-weather-company.md)\n- [Met Office Weather DataHub (Site Specific) vs WeatherAPI.com](https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherapi-com.md)\n- [Met Office Weather DataHub (Site Specific) vs Weatherbit API](https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit.md)\n- [meteoblue Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/meteoblue-vs-xweather.md)\n- [Meteomatics Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/meteomatics-vs-xweather.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Xweather Weather API](https://www.anchorterminal.com/compare/nws-api-vs-xweather.md)\n- [OpenWeather One Call API vs Xweather Weather API](https://www.anchorterminal.com/compare/openweather-one-call-vs-xweather.md)\n- [Pirate Weather vs Xweather Weather API](https://www.anchorterminal.com/compare/pirate-weather-vs-xweather.md)\n- [Tomorrow.io Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/tomorrow-io-vs-xweather.md)\n- [Visual Crossing Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/visual-crossing-vs-xweather.md)\n- [The Weather Company Data APIs vs Xweather Weather API](https://www.anchorterminal.com/compare/weather-company-vs-xweather.md)\n- [WeatherAPI.com vs Xweather Weather API](https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather.md)\n- [Weatherbit API vs Xweather Weather API](https://www.anchorterminal.com/compare/weatherbit-vs-xweather.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "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": "Met Office Weather DataHub (Site Specific) vs Xweather Weather API", "url": "" } ], "description": "Xweather Weather API scores 67.1 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security \u0026 auth. Both do weather current. Category scores, facts…", "facts": [ "Met Office Weather DataHub (Site Specific) E 45.5", "Xweather Weather API B 67.1", "scores" ], "h1": "Met Office Weather DataHub (Site Specific) vs Xweather Weather API", "image": "https://www.anchorterminal.com/assets/og/compare-met-office-datahub-vs-xweather.png", "path": "/compare/met-office-datahub-vs-xweather", "published": "2026-10-01", "section": "tools", "title": "Met Office Weather DataHub (Site Specific) vs Xweather Weather API", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather" }, "tokens": { "markdown": 2850, "slim": 680 }, "version": 1 }