{ "data": { "a": { "slug": "accuweather-api", "name": "AccuWeather Core Weather API + MCP", "vendor": "AccuWeather", "vendorUrl": "https://developer.accuweather.com", "kind": "http-api", "category": "weather", "summary": "Weather API for current conditions, forecasts, alerts and radar imagery, with an official read-only MCP server.", "url": "https://www.anchorterminal.com/tools/accuweather-api", "markdownUrl": "https://www.anchorterminal.com/tools/accuweather-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/accuweather-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/accuweather-api.json", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://dataservice.accuweather.com", "packages": [], "auth": "api-key", "authNotes": "Authorization: Bearer with the Core Weather key on REST, the only method the authentication page documents. The MCP server also takes the key as an apikey parameter on its URL. Keys are rotated on the subscriptions page. Every weather call needs a location key first, from the locations search or geoposition endpoints.", "pricing": "freemium", "pricingNotes": "Free 14-day trial at 500 Core Weather calls a day, MCP included. Starter $2 a month for 15,000 calls ($0.25 per 1,000 over), Standard $25 for 225,000 ($0.12 over), Prime $250 for 1.8 million ($0.15 over), Elite $500 for 2.4 million ($0.22 over, MCP included), Enterprise on request. MinuteCast is a separate product, 50 calls a day free, Lite $25 for 10,000, Full $100 for 675,000. Lightning is Enterprise only (https://developer.accuweather.com/llms-full.txt). The previous free tier was retired with the new portal and old trial accounts have to sign up again (https://developer.accuweather.com/faq).", "priceSummary": "$2 / mo", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": 26, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developer.accuweather.com/documentation/overview", "llmsTxt": "https://developer.accuweather.com/llms.txt", "capabilities": [ "weather.current", "weather.forecast", "weather.alerts", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "mcp", "llms-txt", "closed-source", "enterprise" ], "graded": true, "anchor": { "graded": true, "score": 48.4, "grade": "D", "agentReady": false, "rank": 620, "ranked": true, "rankOf": 722, "categoryRank": 13, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 13, "payments": 25, "reliability": 65, "schema": 60, "security": 39, "transparency": 55 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Official hosted MCP server, 26 read-only tools, same key as the REST API. Terms forbid using the data to train, validate or otherwise inform any AI system.", "bestFor": "Consumer-facing current conditions and forecasts where the AccuWeather name matters to the user.", "strengths": [ "Official hosted MCP server, 26 read-only tools, same key as the REST API", "Packages from $2 a month, with published overage rates per 1,000 calls", "llms.txt, llms-full.txt and a Markdown twin for every docs page", "RFC 7807 error bodies and a documented status code table", "Status page with Enterprise and Developer Portal API components" ], "weaknesses": [ "Terms forbid using the data to train, validate or otherwise inform any AI system", "MCP access only on the trial and Elite ($500 a month)", "No changelog, and the terms allow API changes without notice", "Two calls per new place, a location key lookup then the forecast", "No security.txt, SLA or official SDK" ], "agentNotes": [ "Cache location keys. They don't change, and the lookup is the call worth saving", "Use the geoposition search first when you hold coordinates, then the forecast tools with the key it returns", "Send the key as a Bearer header, not in the MCP URL, so it stays out of logs", "Send Accept-Encoding: gzip and refresh on the Expires header rather than a fixed timer", "Show the AccuWeather name and logo next to the data, and keep nothing older than two weeks" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 48.4 } ], "editorialScores": { "ergonomics": 60, "maintenance": 13, "payments": 25, "reliability": 65, "schema": 60, "security": 39, "transparency": 39 }, "provenanceScore": 71, "dataQualityScore": 39 }, "connect": { "http": "curl -H \"Authorization: Bearer $ACCUWEATHER_API_KEY\" -H \"Accept-Encoding: gzip\" --compressed \"https://dataservice.accuweather.com/currentconditions/v1/349727\"", "claudeCode": "claude mcp add --transport http accuweather https://dataservice.accuweather.com/mcp --header \"Authorization: Bearer $ACCUWEATHER_API_KEY\"", "config": { "mcpServers": { "accuweather": { "headers": { "Authorization": "Bearer ${ACCUWEATHER_API_KEY}" }, "type": "http", "url": "https://dataservice.accuweather.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/accuweather-api" }, "area": "domain-data", "unitPrices": [ { "item": "Starter package", "unit": "month", "usd": 2, "note": "15,000 calls" }, { "item": "Standard package", "unit": "month", "usd": 25, "note": "225,000 calls" }, { "item": "Elite package", "unit": "month", "usd": 500, "note": "2.4 million calls, MCP access" }, { "item": "Overage on Starter", "unit": "1k-requests", "usd": 0.25 }, { "item": "Overage on Standard", "unit": "1k-requests", "usd": 0.12 }, { "item": "Call on Starter, at the plan cap", "unit": "1k-requests", "usd": 0.13, "note": "$2 over 15,000 calls" } ], "provenance": { "legalEntity": "AccuWeather Intl., LLC (API terms), AccuWeather, Inc. (privacy)", "domain": "accuweather.com", "domainRegistered": "1995-10-27", "endpointOnVendorDomain": true, "terms": "https://developer.accuweather.com/documentation/terms-of-use", "privacy": "https://www.accuweather.com/en/privacy", "statusPage": "https://status.accuweather.com/", "changelog": "", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The API terms (updated 2026-04-28) name AccuWeather Intl., LLC under Pennsylvania law. The privacy policy (updated 2025-10-31) names AccuWeather, Inc., 385 Science Park Road, State College, PA 16803, as controller.", "security.txt returns 404 on both developer.accuweather.com and www.accuweather.com.", "status.accuweather.com lists Enterprise API and Developer Portal API components.", "The portal has no release notes or changelog, and the terms reserve the right to change the APIs without notice.", "The old developer portal's free tier was retired at the relaunch, and existing trial accounts had to sign up again." ], "score": 71 }, "dataQuality": { "coverage": "Global, by AccuWeather location key", "coverageRating": 4, "freshness": "Not stated as a cadence. Responses carry an Expires header the docs say to refresh on", "freshnessClass": "hourly", "history": "Past 24 hours of conditions", "historyYears": 0.003, "methodology": "", "sourcesDisclosed": false, "licence": "Proprietary. Two-week cache, no redistribution, no AI training, logo attribution", "licenceClass": "clear", "standing": "", "standingClass": "none", "reuse": "The terms allow caching for up to two weeks to improve the user experience and forbid storing the data for any other purpose, reselling or redistributing it, or using it to train, validate or inform an AI or ML model.", "score": 39, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/accuweather-api.json", "live": { "slug": "accuweather-api", "probe": { "target": "https://dataservice.accuweather.com", "method": "get", "lastAt": "2026-10-08T21:12:02.913824295Z", "lastOk": true, "lastStatus": 404, "lastMs": 34, "authRequired": false, "uptime24h": 99.63, "uptime30d": 99.95, "p50ms24h": 40, "p95ms24h": 119, "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": 238 } ] }, "vendorStatus": { "page": "https://status.accuweather.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:05:50.310943912Z" }, "securityTxt": { "url": "https://accuweather.com/.well-known/security.txt", "state": "unknown", "checkedAt": "2026-10-08T15:39:00.679044321Z" }, "llmsTxt": { "url": "https://developer.accuweather.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T13:59:59.542654497Z" }, "domain": { "domain": "accuweather.com", "registered": "1995-10-27", "source": "https://rdap.verisign.com/com/v1/domain/accuweather.com", "checkedAt": "2026-10-04T13:10:45.927087024Z" }, "pages": [ { "url": "https://www.accuweather.com/en/privacy", "kind": "privacy", "status": 403, "checkedAt": "2026-10-08T18:25:51.259452201Z", "changedAt": "0001-01-01T00:00:00Z" }, { "url": "https://developer.accuweather.com/documentation/terms-of-use", "kind": "terms", "status": 304, "checkedAt": "2026-10-08T18:17:01.727632002Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d23f608f9840" } ], "updatedAt": "2026-10-08T21:12:02.913824295Z" } }, "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (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": "AccuWeather", "b": "Vaisala Oyj", "name": "Vendor" }, { "a": "https://dataservice.accuweather.com", "b": "https://data.api.xweather.com", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable 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": "26", "b": "19", "name": "Tools exposed" }, { "a": "yes", "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": "2026-04-28", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "couldn't be read", "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": "not found in the text", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "yes", "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": "2.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Xweather Weather API scores 67.1 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category.", "question": "Which is better for AI agents, AccuWeather Core Weather API + MCP or Xweather Weather API?" }, { "answer": "AccuWeather Core Weather API + MCP needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.", "question": "Do AccuWeather Core Weather API + MCP and Xweather Weather API need an API key?" }, { "answer": "Yes. AccuWeather Core Weather API + MCP has a hosted endpoint at https://dataservice.accuweather.com and Xweather Weather API at https://data.api.xweather.com.", "question": "Can an agent call AccuWeather Core Weather API + MCP and Xweather Weather API without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "Consumer-facing current conditions and forecasts where the AccuWeather name matters to the user.", "slug": "accuweather-api", "watchFor": "Terms forbid using the data to train, validate or otherwise inform any AI system" }, { "aheadOn": [ "Reliability, 74 against 65", "Schema \u0026 documentation, 83 against 60", "Agent ergonomics, 78 against 60", "Security \u0026 auth, 52 against 39", "Payments \u0026 pricing, 32 against 25", "Maintenance \u0026 community, 81 against 13", "Transparency \u0026 trust, 68 against 55" ], "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-google-weather-api.json", "title": "AccuWeather Core Weather API + MCP vs Google Weather API (Maps Platform)", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-google-weather-api" }, { "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-meteoblue.json", "title": "AccuWeather Core Weather API + MCP vs meteoblue Weather API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-meteoblue" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-meteomatics.json", "title": "AccuWeather Core Weather API + MCP vs Meteomatics Weather API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-meteomatics" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-nws-api.json", "title": "AccuWeather Core Weather API + MCP vs NOAA National Weather Service API (api.weather.gov)", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-nws-api" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-openweather-one-call.json", "title": "AccuWeather Core Weather API + MCP vs OpenWeather One Call API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-openweather-one-call" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather.json", "title": "AccuWeather Core Weather API + MCP vs Pirate Weather", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-tomorrow-io.json", "title": "AccuWeather Core Weather API + MCP vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-visual-crossing.json", "title": "AccuWeather Core Weather API + MCP vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-visual-crossing" }, { "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-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-weatherbit.json", "title": "AccuWeather Core Weather API + MCP vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-weatherbit" }, { "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-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-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": [ { "accuweather-api": 65, "by": 9, "edge": "xweather", "key": "reliability", "name": "Reliability", "weight": 16, "xweather": 74 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "accuweather-api": 60, "by": 23, "edge": "xweather", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "xweather": 83 }, { "accuweather-api": 60, "by": 18, "edge": "xweather", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "xweather": 78 }, { "accuweather-api": 39, "by": 13, "edge": "xweather", "key": "security", "name": "Security \u0026 auth", "weight": 14, "xweather": 52 }, { "accuweather-api": 25, "by": 7, "edge": "xweather", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "xweather": 32 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "accuweather-api": 13, "by": 68, "edge": "xweather", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "xweather": 81 }, { "accuweather-api": 55, "by": 13, "edge": "xweather", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "xweather": 68 } ], "summary": "Xweather Weather API scores 67.1 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category. Both do weather current.", "verdicts": { "accuweather-api": "Official hosted MCP server, 26 read-only tools, same key as the REST API. Terms forbid using the data to train, validate or otherwise inform any AI system.", "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/accuweather-api-vs-xweather", "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-xweather.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/accuweather-api-vs-xweather.md", "slim": "https://www.anchorterminal.com/compare/accuweather-api-vs-xweather.min.md" }, "markdown": "Xweather Weather API scores 67.1 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category. Both do weather current.\n\n- AccuWeather Core Weather API + MCP: grade D, 48.4/100, rank #620 of 722. Markdown https://www.anchorterminal.com/tools/accuweather-api.md · JSON https://www.anchorterminal.com/api/v1/tools/accuweather-api.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### AccuWeather Core Weather API + MCP (D)\n\nGood for: Consumer-facing current conditions and forecasts where the AccuWeather name matters to the user.\n\nWatch for: Terms forbid using the data to train, validate or otherwise inform any AI system\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 65\n- Schema \u0026 documentation, 83 against 60\n- Agent ergonomics, 78 against 60\n- Security \u0026 auth, 52 against 39\n- Payments \u0026 pricing, 32 against 25\n- Maintenance \u0026 community, 81 against 13\n- Transparency \u0026 trust, 68 against 55\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 | AccuWeather Core Weather API + MCP | Xweather Weather API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 74 | Xweather Weather API +9 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 60 | 83 | Xweather Weather API +23 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 78 | Xweather Weather API +18 |\n| Security \u0026 auth | 14% (17.5 this run) | 39 | 52 | Xweather Weather API +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 25 | 32 | Xweather Weather API +7 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 13 | 81 | Xweather Weather API +68 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 55 | 68 | Xweather Weather API +13 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **48.4 · D** | **67.1 · B** | |\n\n## Facts side by side\n\n| Fact | AccuWeather Core Weather API + MCP | Xweather Weather API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | AccuWeather | Vaisala Oyj |\n| Hosted endpoint | `https://dataservice.accuweather.com` | `https://data.api.xweather.com` |\n| Transports | HTTP, Streamable 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 | 26 | 19 |\n| Read-only variant documented | yes | 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 | 2026-04-28 | couldn't be read |\n| Privacy policy last updated | couldn't be read | 2020-06-01 |\n| Customer content may train models | not found in the text | couldn't be read |\n| Terms restrict automated access | not found in the text | couldn't be read |\n| Terms restrict benchmarking | yes | 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 | 2.5/5 (2) | none |\n\n## Verdicts\n\n**AccuWeather Core Weather API + MCP.** Official hosted MCP server, 26 read-only tools, same key as the REST API. Terms forbid using the data to train, validate or otherwise inform any AI system.\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### AccuWeather Core Weather API + MCP\n\n1. Cache location keys. They don't change, and the lookup is the call worth saving\n2. Use the geoposition search first when you hold coordinates, then the forecast tools with the key it returns\n3. Send the key as a Bearer header, not in the MCP URL, so it stays out of logs\n4. Send Accept-Encoding: gzip and refresh on the Expires header rather than a fixed timer\n5. Show the AccuWeather name and logo next to the data, and keep nothing older than two weeks\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, AccuWeather Core Weather API + MCP or Xweather Weather API?\n\nXweather Weather API scores 67.1 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category.\n\n### Do AccuWeather Core Weather API + MCP and Xweather Weather API need an API key?\n\nAccuWeather Core Weather API + MCP needs an API key. Xweather Weather API takes an API key or an OAuth sign-in.\n\n### Can an agent call AccuWeather Core Weather API + MCP and Xweather Weather API without installing anything?\n\nYes. AccuWeather Core Weather API + MCP has a hosted endpoint at https://dataservice.accuweather.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/accuweather-api-vs-xweather.json, and with the fewest tokens: https://www.anchorterminal.com/compare/accuweather-api-vs-xweather.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"accuweather-api\", \"b\": \"xweather\"}`. From a terminal: `anchor compare accuweather-api xweather`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/accuweather-api.json and https://www.anchorterminal.com/api/v1/tools/xweather.json\n\n## Other comparisons with AccuWeather Core Weather API + MCP or Xweather Weather API\n\n- [AccuWeather Core Weather API + MCP vs Google Weather API (Maps Platform)](https://www.anchorterminal.com/compare/accuweather-api-vs-google-weather-api.md)\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 meteoblue Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-meteoblue.md)\n- [AccuWeather Core Weather API + MCP vs Meteomatics Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-meteomatics.md)\n- [AccuWeather Core Weather API + MCP vs NOAA National Weather Service API (api.weather.gov)](https://www.anchorterminal.com/compare/accuweather-api-vs-nws-api.md)\n- [AccuWeather Core Weather API + MCP vs OpenWeather One Call API](https://www.anchorterminal.com/compare/accuweather-api-vs-openweather-one-call.md)\n- [AccuWeather Core Weather API + MCP vs Pirate Weather](https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather.md)\n- [AccuWeather Core Weather API + MCP vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-tomorrow-io.md)\n- [AccuWeather Core Weather API + MCP vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-visual-crossing.md)\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 WeatherAPI.com](https://www.anchorterminal.com/compare/accuweather-api-vs-weatherapi-com.md)\n- [AccuWeather Core Weather API + MCP vs Weatherbit API](https://www.anchorterminal.com/compare/accuweather-api-vs-weatherbit.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 Xweather Weather API](https://www.anchorterminal.com/compare/met-office-datahub-vs-xweather.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": "AccuWeather Core Weather API + MCP vs Xweather Weather API", "url": "" } ], "description": "Xweather Weather API scores 67.1 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category. Both do weather current. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "AccuWeather Core Weather API + MCP D 48.4", "Xweather Weather API B 67.1", "scores" ], "h1": "AccuWeather Core Weather API + MCP vs Xweather Weather API", "image": "https://www.anchorterminal.com/assets/og/compare-accuweather-api-vs-xweather.png", "path": "/compare/accuweather-api-vs-xweather", "published": "2026-10-01", "section": "tools", "title": "AccuWeather Core Weather API + MCP vs Xweather Weather API", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-xweather" }, "tokens": { "markdown": 2750, "slim": 780 }, "version": 1 }