{ "data": { "a": { "slug": "weather-company", "name": "The Weather Company Data APIs", "vendor": "The Weather Company, LLC", "vendorUrl": "https://www.weathercompany.com", "kind": "http-api", "category": "weather", "summary": "The Weather Company Data APIs return current conditions, forecasts to 15 days, historical data, government alerts, imagery and aviation weather from the company behind weather.com. Access is by API key at `api.weather.com`, sold in packages to businesses.", "url": "https://www.anchorterminal.com/tools/weather-company", "markdownUrl": "https://www.anchorterminal.com/tools/weather-company.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/weather-company.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/weather-company.json", "license": "Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published", "transports": [ "http" ], "remoteUrl": "https://api.weather.com", "packages": [], "auth": "api-key", "authNotes": "An API key is required and is sent as the `apiKey` query parameter on every request. No header option is documented. Keys are not self-serve. A person requests a 30-day trial by form or contacts sales, the company provisions the key, and the key is read in the API customer portal after an invitation. Each key is entitled to the endpoints in the customer's package, and an endpoint outside it returns 401.", "pricing": "paid", "pricingNotes": "Standard package $500 a month on an annual plan for 1 million API calls. Enterprise plans and add-on packages are by quote, and overage is charged as the contract defines. A free 30-day trial allows 50,000 calls a day at 100 a minute, is requested by form and is limited to enterprise customers, so an agent cannot start without a person and sales approval (checked 2026-10-08).", "priceSummary": "$500 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer documentation, the API references or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developer.weather.com/docs/home", "capabilities": [ "weather.current", "weather.forecast", "weather.historical", "weather.alerts", "weather.marine", "data.weather" ], "tags": [ "hosted", "paid", "enterprise", "sales-led", "closed-source", "status-page", "api-key", "aviation", "air-quality" ], "lastRelease": "2026-09-14", "graded": true, "anchor": { "graded": true, "score": 52.6, "grade": "D", "agentReady": false, "rank": 565, "ranked": true, "rankOf": 722, "categoryRank": 9, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 54, "maintenance": 36, "payments": 20, "reliability": 73, "schema": 67, "security": 48, "transparency": 49 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A wide weather data API with 168 API references built from OpenAPI documents, global 4 km current conditions, hourly history from June 2015 and a status page with component history. Keys come only through a sales-reviewed trial or contract, travel only in the URL, and the terms that govern the API are not published.", "bestFor": "A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales.", "strengths": [ "168 API reference sections on developer.weather.com are generated from OpenAPI documents, with enums, patterns, required fields, example responses and 13 response codes per operation.", "The Standard package covers current conditions, daily and hourly forecasts to 15 days, alerts from six national agencies, imagery, marine tiles, tides and air quality.", "History on Demand returns hourly gridded history at about 4 km from June 2015, in JSON, CSV or Parquet, with paging, field selection and a compact mode.", "The status page lists 16 components. Its feed shows nine incidents between 10 July and 8 October 2026, all rated minor or none.", "The Standard package price is public, $500 a month on an annual plan for 1 million calls, and the trial allows 50,000 calls a day for 30 days." ], "weaknesses": [ "No self-serve signup. The trial is requested through a form, is limited to enterprise customers, and the Buy now button opens a contact form.", "The API key is accepted only as the `apiKey` query parameter, so it appears in every request URL. No header option is documented.", "The website terms of use say they do not apply to the data APIs and point to separate terms, which we did not find published.", "Exceeding a rate limit returns 401, the same status as a missing key. No 429, Retry-After or backoff guidance is documented.", "No llms.txt, no downloadable OpenAPI file, no official SDK and no MCP server were found. Only one dated changelog entry appeared in 42 API references sampled." ], "agentNotes": [ "Send `units`, `language` and `format=json` with a location on every v3 call, plus `Accept-Encoding: gzip`, which the usage guide marks as required.", "Keep the key out of logs and client-side code, because it travels in the query string as `apiKey`.", "Treat a 401 as either a bad key, an endpoint outside the key's package or an exceeded limit, and treat a 204 as no data for the query.", "Each forecast duration (`3day` to `15day`) is a separate entitlement. Request only durations the contract covers.", "Use `/v3/aggcommon` to combine up to 10 products in one request. Each product and each location still counts as one call." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 52.6 } ], "editorialScores": { "ergonomics": 54, "maintenance": 36, "payments": 20, "reliability": 73, "schema": 67, "security": 48, "transparency": 20 }, "provenanceScore": 77 }, "connect": { "http": "curl --compressed \"https://api.weather.com/v3/wx/forecast/daily/3day?geocode=33.74,-84.39\u0026units=e\u0026language=en-US\u0026format=json\u0026apiKey=$TWC_API_KEY\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/weather-company" }, "area": "domain-data", "unitPrices": [ { "item": "Standard package, annual plan", "unit": "month", "usd": 500, "note": "1 million API calls a month" }, { "item": "Call on Standard, at the plan cap", "unit": "1k-requests", "usd": 0.5, "note": "$500 over 1 million calls" } ], "provenance": { "legalEntity": "The Weather Company, LLC", "domain": "weather.com", "domainRegistered": "1994-08-09", "endpointOnVendorDomain": true, "terms": "", "privacy": "https://weather.com/privacy/privacy-policy", "statusPage": "https://theweathercompanyapis.statuspage.io", "changelog": "", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "The privacy policy, effective 30 April 2026, names The Weather Company, LLC, 1001 Summit Boulevard NE, Brookhaven, GA 30319. Its section on data collection outside consumer products covers developer.weather.com enquiries and business customers.", "No terms document is given. The website terms of use (updated 16 April 2026) say they do not apply to the business data APIs, and the separate terms they refer to were not found on the pricing, trial or documentation pages.", "The API answers at api.weather.com and the documentation at developer.weather.com. The company site is www.weathercompany.com (registered 1998-03-24).", "weather.com/.well-known/security.txt gives a security contact and expires on 31 December 2026. www.weathercompany.com and developer.weather.com return 404 for the same path.", "RDAP for weather.com gives a registration date of 1994-08-09 and CSC Corporate Domains, Inc. as registrar.", "There is no central changelog. Each API reference has its own changelog section, most of them empty." ], "score": 77 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/weather-company.json", "live": { "slug": "weather-company", "probe": { "target": "https://api.weather.com", "method": "get", "lastAt": "2026-10-08T21:12:25.691314952Z", "lastOk": true, "lastStatus": 401, "lastMs": 19, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 23, "p95ms24h": 64, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://theweathercompanyapis.statuspage.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:06:30.225974996Z" }, "updatedAt": "2026-10-08T21:12:25.691314952Z" } }, "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in every scored category.", "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": "The Weather Company, LLC", "b": "Vaisala Oyj", "name": "Vendor" }, { "a": "https://api.weather.com", "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": "Paid", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published", "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": "2026-09-14", "b": "2026-09-14", "name": "Last release" }, { "a": "no document linked", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "2020-06-01", "name": "Privacy policy last updated" }, { "a": "", "b": "couldn't be read", "name": "Customer content may train models" }, { "a": "", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "", "b": "couldn't be read", "name": "Terms restrict benchmarking" }, { "a": "", "b": "couldn't be read", "name": "Terms or service can change without notice" }, { "a": "", "b": "couldn't be read", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "0 stars, 1.4k npm/wk", "name": "Popularity" } ], "faq": [ { "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in every scored category.", "question": "Which is better for AI agents, The Weather Company Data APIs or Xweather Weather API?" }, { "answer": "The Weather Company Data APIs needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.", "question": "Do The Weather Company Data APIs and Xweather Weather API need an API key?" }, { "answer": "Yes. The Weather Company Data APIs has a hosted endpoint at https://api.weather.com and Xweather Weather API at https://data.api.xweather.com.", "question": "Can an agent call The Weather Company Data APIs and Xweather Weather API without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales.", "slug": "weather-company", "watchFor": "No self-serve signup. The trial is requested through a form, is limited to enterprise customers, and the Buy now button opens a contact form." }, { "aheadOn": [ "Schema \u0026 documentation, 83 against 67", "Agent ergonomics, 78 against 54", "Payments \u0026 pricing, 32 against 20", "Maintenance \u0026 community, 81 against 36", "Transparency \u0026 trust, 68 against 49" ], "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-weather-company.json", "title": "AccuWeather Core Weather API + MCP vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-weather-company" }, { "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-weather-company.json", "title": "Google Weather API (Maps Platform) vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-weather-company" }, { "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-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-xweather.json", "title": "Met Office Weather DataHub (Site Specific) vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-weather-company.json", "title": "meteoblue Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-weather-company" }, { "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-weather-company.json", "title": "Meteomatics Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-weather-company" }, { "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-weather-company.json", "title": "NOAA National Weather Service API (api.weather.gov) vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weather-company" }, { "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-weather-company.json", "title": "OpenWeather One Call API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company" }, { "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-weather-company.json", "title": "Pirate Weather vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-weather-company" }, { "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-weather-company.json", "title": "Tomorrow.io Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weather-company" }, { "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-weather-company.json", "title": "Visual Crossing Weather API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/visual-crossing-vs-weather-company" }, { "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-weatherapi-com.json", "title": "The Weather Company Data APIs vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/weather-company-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.json", "title": "The Weather Company Data APIs vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/weather-company-vs-weatherbit" }, { "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": 1, "edge": "xweather", "key": "reliability", "name": "Reliability", "weather-company": 73, "weight": 16, "xweather": 74 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 16, "edge": "xweather", "key": "schema", "name": "Schema \u0026 documentation", "weather-company": 67, "weight": 13, "xweather": 83 }, { "by": 24, "edge": "xweather", "key": "ergonomics", "name": "Agent ergonomics", "weather-company": 54, "weight": 13, "xweather": 78 }, { "by": 4, "edge": "xweather", "key": "security", "name": "Security \u0026 auth", "weather-company": 48, "weight": 14, "xweather": 52 }, { "by": 12, "edge": "xweather", "key": "payments", "name": "Payments \u0026 pricing", "weather-company": 20, "weight": 10, "xweather": 32 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 45, "edge": "xweather", "key": "maintenance", "name": "Maintenance \u0026 community", "weather-company": 36, "weight": 7, "xweather": 81 }, { "by": 19, "edge": "xweather", "key": "transparency", "name": "Transparency \u0026 trust", "weather-company": 49, "weight": 7, "xweather": 68 } ], "summary": "Xweather Weather API scores 67.1 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in every scored category. Both do weather current.", "verdicts": { "weather-company": "A wide weather data API with 168 API references built from OpenAPI documents, global 4 km current conditions, hourly history from June 2015 and a status page with component history. Keys come only through a sales-reviewed trial or contract, travel only in the URL, and the terms that govern the API are not published.", "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/weather-company-vs-xweather", "json": "https://www.anchorterminal.com/compare/weather-company-vs-xweather.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/weather-company-vs-xweather.md", "slim": "https://www.anchorterminal.com/compare/weather-company-vs-xweather.min.md" }, "markdown": "Xweather Weather API scores 67.1 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in every scored category. Both do weather current.\n\n- The Weather Company Data APIs: grade D, 52.6/100, rank #565 of 722. Markdown https://www.anchorterminal.com/tools/weather-company.md · JSON https://www.anchorterminal.com/api/v1/tools/weather-company.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### The Weather Company Data APIs (D)\n\nGood for: A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales.\n\nWatch for: No self-serve signup. The trial is requested through a form, is limited to enterprise customers, and the Buy now button opens a contact form.\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- Schema \u0026 documentation, 83 against 67\n- Agent ergonomics, 78 against 54\n- Payments \u0026 pricing, 32 against 20\n- Maintenance \u0026 community, 81 against 36\n- Transparency \u0026 trust, 68 against 49\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 | The Weather Company Data APIs | Xweather Weather API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 73 | 74 | Xweather Weather API +1 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 67 | 83 | Xweather Weather API +16 |\n| Agent ergonomics | 13% (16.2 this run) | 54 | 78 | Xweather Weather API +24 |\n| Security \u0026 auth | 14% (17.5 this run) | 48 | 52 | Xweather Weather API +4 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 32 | Xweather Weather API +12 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 36 | 81 | Xweather Weather API +45 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 49 | 68 | Xweather Weather API +19 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **52.6 · D** | **67.1 · B** | |\n\n## Facts side by side\n\n| Fact | The Weather Company Data APIs | Xweather Weather API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | The Weather Company, LLC | Vaisala Oyj |\n| Hosted endpoint | `https://api.weather.com` | `https://data.api.xweather.com` |\n| Transports | HTTP | HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Paid | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published | 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 | 2026-09-14 | 2026-09-14 |\n| Terms last updated | no document linked | couldn't be read |\n| Privacy policy last updated | couldn't be read | 2020-06-01 |\n| Customer content may train models | | couldn't be read |\n| Terms restrict automated access | | couldn't be read |\n| Terms restrict benchmarking | | couldn't be read |\n| Terms or service can change without notice | | couldn't be read |\n| Arbitration or class-action waiver | | couldn't be read |\n| Popularity | none | 0 stars, 1.4k npm/wk |\n\n## Verdicts\n\n**The Weather Company Data APIs.** A wide weather data API with 168 API references built from OpenAPI documents, global 4 km current conditions, hourly history from June 2015 and a status page with component history. Keys come only through a sales-reviewed trial or contract, travel only in the URL, and the terms that govern the API are not published.\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### The Weather Company Data APIs\n\n1. Send `units`, `language` and `format=json` with a location on every v3 call, plus `Accept-Encoding: gzip`, which the usage guide marks as required.\n2. Keep the key out of logs and client-side code, because it travels in the query string as `apiKey`.\n3. Treat a 401 as either a bad key, an endpoint outside the key's package or an exceeded limit, and treat a 204 as no data for the query.\n4. Each forecast duration (`3day` to `15day`) is a separate entitlement. Request only durations the contract covers.\n5. Use `/v3/aggcommon` to combine up to 10 products in one request. Each product and each location still counts as one call.\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, The Weather Company Data APIs or Xweather Weather API?\n\nXweather Weather API scores 67.1 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in every scored category.\n\n### Do The Weather Company Data APIs and Xweather Weather API need an API key?\n\nThe Weather Company Data APIs needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.\n\n### Can an agent call The Weather Company Data APIs and Xweather Weather API without installing anything?\n\nYes. The Weather Company Data APIs has a hosted endpoint at https://api.weather.com 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/weather-company-vs-xweather.json, and with the fewest tokens: https://www.anchorterminal.com/compare/weather-company-vs-xweather.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"weather-company\", \"b\": \"xweather\"}`. From a terminal: `anchor compare weather-company xweather`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/weather-company.json and https://www.anchorterminal.com/api/v1/tools/xweather.json\n\n## Other comparisons with The Weather Company Data APIs or Xweather Weather API\n\n- [AccuWeather Core Weather API + MCP vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/accuweather-api-vs-weather-company.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 The Weather Company Data APIs](https://www.anchorterminal.com/compare/google-weather-api-vs-weather-company.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 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 Xweather Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.md)\n- [meteoblue Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/meteoblue-vs-weather-company.md)\n- [meteoblue Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/meteoblue-vs-xweather.md)\n- [Meteomatics Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/meteomatics-vs-weather-company.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 The Weather Company Data APIs](https://www.anchorterminal.com/compare/nws-api-vs-weather-company.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 The Weather Company Data APIs](https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company.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 The Weather Company Data APIs](https://www.anchorterminal.com/compare/pirate-weather-vs-weather-company.md)\n- [Pirate Weather vs Xweather Weather API](https://www.anchorterminal.com/compare/pirate-weather-vs-xweather.md)\n- [Tomorrow.io Weather API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/tomorrow-io-vs-weather-company.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 The Weather Company Data APIs](https://www.anchorterminal.com/compare/visual-crossing-vs-weather-company.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 WeatherAPI.com](https://www.anchorterminal.com/compare/weather-company-vs-weatherapi-com.md)\n- [The Weather Company Data APIs vs Weatherbit API](https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.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": "The Weather Company Data APIs vs Xweather Weather API", "url": "" } ], "description": "Xweather Weather API scores 67.1 (B) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in every scored category. Both do weather current. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "The Weather Company Data APIs D 52.6", "Xweather Weather API B 67.1", "scores" ], "h1": "The Weather Company Data APIs vs Xweather Weather API", "image": "https://www.anchorterminal.com/assets/og/compare-weather-company-vs-xweather.png", "path": "/compare/weather-company-vs-xweather", "published": "2026-10-01", "section": "tools", "title": "The Weather Company Data APIs vs Xweather Weather API for AI agents", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/weather-company-vs-xweather" }, "tokens": { "markdown": 2800, "slim": 730 }, "version": 1 }