{ "data": { "a": { "slug": "weatherapi-com", "name": "WeatherAPI.com", "vendor": "WeatherAPI.com (Zoomash Ltd)", "vendorUrl": "https://www.weatherapi.com", "kind": "http-api", "category": "weather", "summary": "Weather API for current conditions, forecasts, history, marine data, alerts and air quality, queried by location.", "url": "https://www.anchorterminal.com/tools/weatherapi-com", "markdownUrl": "https://www.anchorterminal.com/tools/weatherapi-com.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/weatherapi-com.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/weatherapi-com.json", "transports": [ "http" ], "remoteUrl": "https://api.weatherapi.com/v1", "packages": [], "auth": "api-key", "authNotes": "The key goes in the key query parameter on every request. The terms tie one key to one application.", "pricing": "freemium", "pricingNotes": "Free at 100,000 calls a month with a 3-day forecast and 1 day of history, no card. Starter $7 a month ($75 a year) for 3 million calls, 7-day forecast and 7 days of history. Pro+ $25 ($270 a year) for 5 million calls, 14-day forecast, 365 days of history, marine with tides and bulk requests. Business $65 ($702 a year) for 10 million calls, history back to 2010-01-01 and 99.9 per cent uptime. Enterprise on request with unlimited calls. Paid plans start with a 14-day free trial (https://www.weatherapi.com/pricing.aspx).", "priceSummary": "$7 / mo", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://www.weatherapi.com/docs/", "llmsTxt": "https://www.weatherapi.com/llms.txt", "openapi": "https://www.weatherapi.com/openapi.json", "capabilities": [ "weather.current", "weather.forecast", "weather.historical", "weather.alerts", "weather.marine", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "no-card", "closed-source", "uk" ], "graded": true, "anchor": { "graded": true, "score": 65.3, "grade": "B", "agentReady": false, "rank": 260, "ranked": true, "rankOf": 722, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 45, "payments": 30, "reliability": 90, "schema": 89, "security": 37, "transparency": 65 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "3 million calls for $7 a month, and 100,000 a month free with no card. Key only in the query string, and no security.txt.", "bestFor": "Cheap, high-volume consumer forecasts where the location arrives as a city, postcode or IP.", "strengths": [ "3 million calls for $7 a month, and 100,000 a month free with no card", "OpenAPI 3.1 spec with structured errors, plus llms.txt", "Field filters (current_fields, day_fields, hour_fields) to trim responses", "Status page with no incidents listed, and 99.9 per cent with service credits for High Volume customers", "12 months' written notice before an API deprecation, in the terms" ], "weaknesses": [ "Key only in the query string, and no security.txt", "Privacy policy undated, with template placeholders and transfers to Russia and China", "SDKs for Node.js, Java, PHP and Go untouched since 2020 and 2021", "No full list of data sources or models", "Caching limited to 60 minutes for current and 24 hours for forecast" ], "agentNotes": [ "Pass current_fields, day_fields or hour_fields to cut the response to what you need", "Treat a 403 with error code 2007 as the monthly quota, not a bad key. There's no 429", "Reuse the id from search.json (q=id:NNN) to avoid ambiguous city names", "Cache history freely, current for under an hour and forecasts for under a day, to stay inside the terms", "Use https://api.weatherapi.com/v1. The docs still show an http:// base URL" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 65.3 } ], "editorialScores": { "ergonomics": 80, "maintenance": 45, "payments": 30, "reliability": 90, "schema": 89, "security": 37, "transparency": 49 }, "provenanceScore": 81, "dataQualityScore": 49 }, "connect": { "http": "curl \"https://api.weatherapi.com/v1/forecast.json?key=$WEATHERAPI_KEY\u0026q=51.51,-0.13\u0026days=3\u0026aqi=no\u0026alerts=no\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/weatherapi-com" }, "area": "domain-data", "unitPrices": [ { "item": "Starter plan", "unit": "month", "usd": 7, "note": "3 million calls, $75 a year" }, { "item": "Pro+ plan", "unit": "month", "usd": 25, "note": "5 million calls, $270 a year" }, { "item": "Business plan", "unit": "month", "usd": 65, "note": "10 million calls, $702 a year" }, { "item": "Call on Starter, at the plan cap", "unit": "1k-requests", "usd": 0.0023, "note": "$7 over 3 million calls" }, { "item": "Call on Business, at the plan cap", "unit": "1k-requests", "usd": 0.0065, "note": "$65 over 10 million calls" } ], "provenance": { "legalEntity": "Zoomash Ltd", "domain": "weatherapi.com", "domainRegistered": "2014-11-29", "endpointOnVendorDomain": true, "terms": "https://www.weatherapi.com/terms.aspx", "privacy": "https://www.weatherapi.com/privacy.aspx", "statusPage": "https://status.weatherapi.com/", "changelog": "https://www.weatherapi.com/api-changelog.html", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The terms name Zoomash Ltd under the law of England and Wales but give no registered address or company number, and the privacy policy names no entity beyond WeatherAPI.com.", "The privacy policy says personal data may be transferred to the USA, Russia, Japan, China and India, and names Stripe for payments.", "The status page at status.weatherapi.com runs on Better Stack.", "www.weatherapi.com/.well-known/security.txt returns an HTML error page per the 30 September check." ], "score": 81 }, "dataQuality": { "coverage": "Global, any coordinate, city, postcode or IP", "coverageRating": 4, "freshness": "Not stated. The terms allow current conditions to be cached for 60 minutes", "freshnessClass": "hourly", "history": "From 2010-01-01 on Business, 365 days on Pro+", "historyYears": 16, "methodology": "", "sourcesDisclosed": false, "licence": "Proprietary. Cache limits, no resale, attribution on Free", "licenceClass": "clear", "standing": "", "standingClass": "none", "reuse": "The terms cap caching at 60 minutes for current and 24 hours for forecast, forbid selling the data on, and end any right to keep it when the subscription ends. Showing it in your own app or service is allowed.", "score": 49, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/weatherapi-com.json", "live": { "slug": "weatherapi-com", "probe": { "target": "https://api.weatherapi.com/v1", "method": "get", "lastAt": "2026-10-08T21:12:25.711202094Z", "lastOk": true, "lastStatus": 404, "lastMs": 60, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 62, "p95ms24h": 120, "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://status.weatherapi.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:39:20.126270485Z" }, "securityTxt": { "url": "https://weatherapi.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:39.748023836Z" }, "llmsTxt": { "url": "https://www.weatherapi.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:01:00.32362095Z" }, "domain": { "domain": "weatherapi.com", "registered": "2014-11-29", "source": "https://rdap.verisign.com/com/v1/domain/weatherapi.com", "checkedAt": "2026-10-04T13:06:50.954163408Z" }, "pages": [ { "url": "https://www.weatherapi.com/api-changelog.html", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:31:32.351135847Z", "changedAt": "2026-10-04T15:52:53.355500992Z", "fingerprint": "27443ff20814" }, { "url": "https://www.weatherapi.com/pricing.aspx", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:31:34.385549818Z", "changedAt": "2026-10-07T18:14:34.72382766Z", "fingerprint": "9ecc9dbb8a72" }, { "url": "https://www.weatherapi.com/privacy.aspx", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:31:36.402531931Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "cb9e4a437682" }, { "url": "https://www.weatherapi.com/terms.aspx", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:31:38.39494388Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "29affc48ca13" } ], "updatedAt": "2026-10-08T21:12:25.711202094Z" } }, "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against WeatherAPI.com's 65.3 (B), and leads in 4 of 7 scored categories. WeatherAPI.com leads on reliability and schema \u0026 documentation.", "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": "WeatherAPI.com (Zoomash Ltd)", "b": "Vaisala Oyj", "name": "Vendor" }, { "a": "https://api.weatherapi.com/v1", "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": "none", "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": "yes", "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": "no date given", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "no date given", "b": "2020-06-01", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Customer content may train models" }, { "a": "yes", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "couldn't be read", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "0 stars, 1.4k npm/wk", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against WeatherAPI.com's 65.3 (B), and leads in 4 of 7 scored categories. WeatherAPI.com leads on reliability and schema \u0026 documentation.", "question": "Which is better for AI agents, WeatherAPI.com or Xweather Weather API?" }, { "answer": "WeatherAPI.com needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.", "question": "Do WeatherAPI.com and Xweather Weather API need an API key?" }, { "answer": "Yes. WeatherAPI.com has a hosted endpoint at https://api.weatherapi.com/v1 and Xweather Weather API at https://data.api.xweather.com.", "question": "Can an agent call WeatherAPI.com and Xweather Weather API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 90 against 74", "Schema \u0026 documentation, 89 against 83" ], "also": [ "Free to start without a card" ], "goodFor": "Cheap, high-volume consumer forecasts where the location arrives as a city, postcode or IP.", "slug": "weatherapi-com", "watchFor": "Key only in the query string, and no security.txt" }, { "aheadOn": [ "Security \u0026 auth, 52 against 37", "Maintenance \u0026 community, 81 against 45" ], "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-weatherapi-com.json", "title": "AccuWeather Core Weather API + MCP vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "Google Weather API (Maps Platform) vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-weatherapi-com" }, { "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-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-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-weatherapi-com.json", "title": "meteoblue Weather API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "Meteomatics Weather API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "NOAA National Weather Service API (api.weather.gov) vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "OpenWeather One Call API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "Pirate Weather vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "Tomorrow.io Weather API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherapi-com" }, { "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-weatherapi-com.json", "title": "Visual Crossing Weather API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/visual-crossing-vs-weatherapi-com" }, { "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-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-weatherbit.json", "title": "WeatherAPI.com vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/weatherapi-com-vs-weatherbit" }, { "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": 16, "edge": "weatherapi-com", "key": "reliability", "name": "Reliability", "weatherapi-com": 90, "weight": 16, "xweather": 74 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 6, "edge": "weatherapi-com", "key": "schema", "name": "Schema \u0026 documentation", "weatherapi-com": 89, "weight": 13, "xweather": 83 }, { "by": 2, "edge": "weatherapi-com", "key": "ergonomics", "name": "Agent ergonomics", "weatherapi-com": 80, "weight": 13, "xweather": 78 }, { "by": 15, "edge": "xweather", "key": "security", "name": "Security \u0026 auth", "weatherapi-com": 37, "weight": 14, "xweather": 52 }, { "by": 2, "edge": "xweather", "key": "payments", "name": "Payments \u0026 pricing", "weatherapi-com": 30, "weight": 10, "xweather": 32 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 36, "edge": "xweather", "key": "maintenance", "name": "Maintenance \u0026 community", "weatherapi-com": 45, "weight": 7, "xweather": 81 }, { "by": 3, "edge": "xweather", "key": "transparency", "name": "Transparency \u0026 trust", "weatherapi-com": 65, "weight": 7, "xweather": 68 } ], "summary": "Xweather Weather API scores 67.1 (B) on agent readiness against WeatherAPI.com's 65.3 (B), and leads in 4 of 7 scored categories. WeatherAPI.com leads on reliability and schema \u0026 documentation. Both do weather current.", "verdicts": { "weatherapi-com": "3 million calls for $7 a month, and 100,000 a month free with no card. Key only in the query string, and no security.txt.", "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/weatherapi-com-vs-xweather", "json": "https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather.md", "slim": "https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather.min.md" }, "markdown": "Xweather Weather API scores 67.1 (B) on agent readiness against WeatherAPI.com's 65.3 (B), and leads in 4 of 7 scored categories. WeatherAPI.com leads on reliability and schema \u0026 documentation. Both do weather current.\n\n- WeatherAPI.com: grade B, 65.3/100, rank #260 of 722. Markdown https://www.anchorterminal.com/tools/weatherapi-com.md · JSON https://www.anchorterminal.com/api/v1/tools/weatherapi-com.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### WeatherAPI.com (B)\n\nGood for: Cheap, high-volume consumer forecasts where the location arrives as a city, postcode or IP.\n\nAhead on:\n- Reliability, 90 against 74\n- Schema \u0026 documentation, 89 against 83\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: Key only in the query string, and no security.txt\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- Security \u0026 auth, 52 against 37\n- Maintenance \u0026 community, 81 against 45\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 | WeatherAPI.com | Xweather Weather API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 90 | 74 | WeatherAPI.com +16 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 89 | 83 | WeatherAPI.com +6 |\n| Agent ergonomics | 13% (16.2 this run) | 80 | 78 | WeatherAPI.com +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 37 | 52 | Xweather Weather API +15 |\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) | 45 | 81 | Xweather Weather API +36 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 68 | Xweather Weather API +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **65.3 · B** | **67.1 · B** | |\n\n## Facts side by side\n\n| Fact | WeatherAPI.com | Xweather Weather API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | WeatherAPI.com (Zoomash Ltd) | Vaisala Oyj |\n| Hosted endpoint | `https://api.weatherapi.com/v1` | `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 | none | 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 | yes | yes |\n| MCP registry | not listed | `com.xweather/weather` |\n| Last release | none | 2026-09-14 |\n| Terms last updated | no date given | couldn't be read |\n| Privacy policy last updated | no date given | 2020-06-01 |\n| Customer content may train models | not found in the text | couldn't be read |\n| Terms restrict automated access | yes | couldn't be read |\n| Terms restrict benchmarking | not found in the text | couldn't be read |\n| Terms or service can change without notice | yes | couldn't be read |\n| Arbitration or class-action waiver | not found in the text | couldn't be read |\n| Popularity | none | 0 stars, 1.4k npm/wk |\n| Agent reviews | 3.5/5 (2) | none |\n\n## Verdicts\n\n**WeatherAPI.com.** 3 million calls for $7 a month, and 100,000 a month free with no card. Key only in the query string, and no security.txt.\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### WeatherAPI.com\n\n1. Pass current_fields, day_fields or hour_fields to cut the response to what you need\n2. Treat a 403 with error code 2007 as the monthly quota, not a bad key. There's no 429\n3. Reuse the id from search.json (q=id:NNN) to avoid ambiguous city names\n4. Cache history freely, current for under an hour and forecasts for under a day, to stay inside the terms\n5. Use https://api.weatherapi.com/v1. The docs still show an http:// base URL\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, WeatherAPI.com or Xweather Weather API?\n\nXweather Weather API scores 67.1 (B) on agent readiness against WeatherAPI.com's 65.3 (B), and leads in 4 of 7 scored categories. WeatherAPI.com leads on reliability and schema \u0026 documentation.\n\n### Do WeatherAPI.com and Xweather Weather API need an API key?\n\nWeatherAPI.com needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.\n\n### Can an agent call WeatherAPI.com and Xweather Weather API without installing anything?\n\nYes. WeatherAPI.com has a hosted endpoint at https://api.weatherapi.com/v1 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/weatherapi-com-vs-xweather.json, and with the fewest tokens: https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"weatherapi-com\", \"b\": \"xweather\"}`. From a terminal: `anchor compare weatherapi-com xweather`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/weatherapi-com.json and https://www.anchorterminal.com/api/v1/tools/xweather.json\n\n## Other comparisons with WeatherAPI.com or Xweather Weather API\n\n- [AccuWeather Core Weather API + MCP vs WeatherAPI.com](https://www.anchorterminal.com/compare/accuweather-api-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/google-weather-api-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/meteoblue-vs-weatherapi-com.md)\n- [meteoblue Weather API vs Xweather Weather API](https://www.anchorterminal.com/compare/meteoblue-vs-xweather.md)\n- [Meteomatics Weather API vs WeatherAPI.com](https://www.anchorterminal.com/compare/meteomatics-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/nws-api-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/pirate-weather-vs-weatherapi-com.md)\n- [Pirate Weather vs Xweather Weather API](https://www.anchorterminal.com/compare/pirate-weather-vs-xweather.md)\n- [Tomorrow.io Weather API vs WeatherAPI.com](https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherapi-com.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 WeatherAPI.com](https://www.anchorterminal.com/compare/visual-crossing-vs-weatherapi-com.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 Xweather Weather API](https://www.anchorterminal.com/compare/weather-company-vs-xweather.md)\n- [WeatherAPI.com vs Weatherbit API](https://www.anchorterminal.com/compare/weatherapi-com-vs-weatherbit.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": "WeatherAPI.com vs Xweather Weather API", "url": "" } ], "description": "Xweather Weather API scores 67.1 (B) on agent readiness against WeatherAPI.com's 65.3 (B), and leads in 4 of 7 scored categories. WeatherAPI.com leads on reliability and schema \u0026 documentation. Both do weather current. Category scores, facts, verdicts and agent notes side by…", "facts": [ "WeatherAPI.com B 65.3", "Xweather Weather API B 67.1", "scores" ], "h1": "WeatherAPI.com vs Xweather Weather API", "image": "https://www.anchorterminal.com/assets/og/compare-weatherapi-com-vs-xweather.png", "path": "/compare/weatherapi-com-vs-xweather", "published": "2026-10-01", "section": "tools", "title": "WeatherAPI.com vs Xweather Weather API for AI agents, B 65.3 vs B 67.1", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/weatherapi-com-vs-xweather" }, "tokens": { "markdown": 2600, "slim": 730 }, "version": 1 }