{ "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": 814, "ranked": true, "rankOf": 950, "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": "2026-10-10T03:53:17.283527212Z", "lastOk": true, "lastStatus": 404, "lastMs": 47, "authRequired": false, "uptime24h": 100, "uptime30d": 99.96, "p50ms24h": 36, "p95ms24h": 126, "samples24h": 249, "samples30d": 2274, "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": 268, "ok": 267 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "vendorStatus": { "page": "https://status.accuweather.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-10T03:57:58.885945397Z" }, "securityTxt": { "url": "https://accuweather.com/.well-known/security.txt", "state": "unknown", "checkedAt": "2026-10-09T15:40:26.294468226Z" }, "llmsTxt": { "url": "https://developer.accuweather.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-09T14:01:05.136587941Z" }, "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": "2026-10-09T18:47:35.166927189Z", "changedAt": "0001-01-01T00:00:00Z" }, { "url": "https://developer.accuweather.com/documentation/terms-of-use", "kind": "terms", "status": 304, "checkedAt": "2026-10-09T18:34:58.810411621Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d23f608f9840" } ], "updatedAt": "2026-10-10T03:57:58.885945397Z" } }, "answer": "Open-Meteo scores 63.4 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in 5 of 7 scored categories. AccuWeather Core Weather API + MCP leads on reliability.", "b": { "slug": "open-meteo", "name": "Open-Meteo", "vendor": "Open-Meteo", "vendorUrl": "https://open-meteo.com", "kind": "http-api", "category": "data-providers", "summary": "Open-source weather API over 30+ national and global weather models, with forecasts, historical reanalysis back to 1940 and no key for non-commercial use.", "url": "https://www.anchorterminal.com/tools/open-meteo", "markdownUrl": "https://www.anchorterminal.com/tools/open-meteo.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/open-meteo.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/open-meteo.json", "repo": "https://github.com/open-meteo/open-meteo", "license": "AGPL-3.0 (code), CC BY 4.0 (data)", "transports": [ "http" ], "remoteUrl": "https://api.open-meteo.com/v1/forecast", "packages": [], "auth": "none", "authNotes": "No key for non-commercial use. Commercial plans add `\u0026apikey=` on customer-api.open-meteo.com.", "pricing": "freemium", "pricingNotes": "Free for non-commercial use at 600 calls a minute, 5,000 an hour, 10,000 a day and 300,000 a month. Commercial plans for 1M, 5M and 50M+ calls a month show prices only at Stripe checkout, and monthly caps aren't enforced yet, with email alerts at 80, 90 and 100 per cent instead (https://open-meteo.com/en/pricing).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 6200, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-26" }, "docsUrl": "https://open-meteo.com/en/docs", "openapi": "https://github.com/open-meteo/open-meteo/blob/main/openapi/forecast.yml", "capabilities": [ "data.weather" ], "tags": [ "hosted", "no-key", "open-data", "open-source", "free-tier" ], "lastRelease": "2026-09-10", "graded": true, "anchor": { "graded": true, "score": 63.4, "grade": "B", "agentReady": false, "rank": 394, "ranked": true, "rankOf": 950, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 85, "maintenance": 90, "payments": 50, "reliability": 50, "schema": 77, "security": 38, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout.", "bestFor": "Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.", "strengths": [ "No key or account for non-commercial use, at 600 calls a minute and 10,000 a day", "OpenAPI 3.1 files for nine APIs with an enum for every weather variable", "Five releases between 11 July and 10 September 2026, AGPL-3.0 code and CC BY 4.0 data", "Logs deleted after 90 days and no cookies or trackers, per the terms", "Official Python and TypeScript SDKs" ], "weaknesses": [ "Commercial prices appear only at Stripe checkout", "The commercial key is sent as `\u0026apikey=` in the URL", "Status page is uptime monitors with no incident write-ups we could read", "Terms change on posting and IPs can be blocked without notice", "No llms.txt, no official MCP server, and the OpenAPI files aren't linked from the docs" ], "agentNotes": [ "Name only the variables you need in `hourly=` or `daily=`, because each one adds a full time series", "Credit 'Weather data by Open-Meteo.com' wherever you show the data", "Use customer-api.open-meteo.com with `\u0026apikey=` for anything commercial, and keep that URL out of logs", "Read `reason` on a 400. It names the bad parameter", "Cache by coordinate and model run, since global models update about every six hours" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.4 } ], "editorialScores": { "ergonomics": 85, "maintenance": 90, "payments": 50, "reliability": 50, "schema": 77, "security": 38, "transparency": 70 }, "provenanceScore": 73, "dataQualityScore": 80 }, "connect": { "http": "curl \"https://api.open-meteo.com/v1/forecast?latitude=51.51\u0026longitude=-0.13\u0026hourly=temperature_2m,precipitation\u0026forecast_days=2\"" }, "letme": { "capability": "https://letme.dev/data.weather", "tool": "https://letme.dev/open-meteo" }, "alsoIn": [ "weather" ], "area": "web-data", "provenance": { "legalEntity": "OpenMeteo GmbH", "domain": "open-meteo.com", "domainRegistered": "2021-04-27", "endpointOnVendorDomain": true, "terms": "https://open-meteo.com/en/terms", "privacy": "https://open-meteo.com/en/terms#privacy", "statusPage": "https://status.open-meteo.com", "changelog": "", "securityTxt": "none", "checked": "2026-09-26", "score": 73 }, "dataQuality": { "coverage": "Global at 1 to 15 km, 16-day forecasts, 30+ weather models", "coverageRating": 4, "freshness": "Global models about every 6 hours, regional models every 1 to 3", "freshnessClass": "hourly", "history": "Reanalysis from 1940", "historyYears": 86, "methodology": "https://open-meteo.com/en/docs/historical-weather-api", "sourcesDisclosed": true, "licence": "CC BY 4.0", "licenceClass": "open", "standing": "", "standingClass": "none", "reuse": "CC BY 4.0, so caching and redistribution are fine with credit. Commercial use of the API needs a paid plan.", "score": 80, "checks": null }, "pageJsonUrl": "https://www.anchorterminal.com/tools/open-meteo.json", "live": { "slug": "open-meteo", "probe": { "target": "https://api.open-meteo.com/v1/forecast", "method": "get", "lastAt": "2026-10-10T03:53:36.570006815Z", "lastOk": true, "lastStatus": 200, "lastMs": 114, "authRequired": false, "uptime24h": 98.8, "uptime30d": 99.27, "p50ms24h": 113, "p95ms24h": 205, "samples24h": 249, "samples30d": 3430, "days": [ { "date": "2026-09-27", "probes": 132, "ok": 131 }, { "date": "2026-09-28", "probes": 285, "ok": 283 }, { "date": "2026-09-29", "probes": 286, "ok": 286 }, { "date": "2026-09-30", "probes": 286, "ok": 284 }, { "date": "2026-10-01", "probes": 276, "ok": 273 }, { "date": "2026-10-02", "probes": 248, "ok": 245 }, { "date": "2026-10-03", "probes": 271, "ok": 268 }, { "date": "2026-10-04", "probes": 272, "ok": 269 }, { "date": "2026-10-05", "probes": 272, "ok": 271 }, { "date": "2026-10-06", "probes": 272, "ok": 271 }, { "date": "2026-10-07", "probes": 272, "ok": 270 }, { "date": "2026-10-08", "probes": 268, "ok": 267 }, { "date": "2026-10-09", "probes": 250, "ok": 247 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "vendorStatus": { "page": "https://status.open-meteo.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T00:50:54.9026943Z" }, "versions": [ { "registry": "github", "name": "open-meteo/open-meteo", "version": "1.6.0", "released": "2026-09-10", "seenAt": "2026-10-09T17:09:47.247934315Z" } ], "githubStars": 6318, "securityTxt": { "url": "https://open-meteo.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:40:28.460254115Z" }, "domain": { "domain": "open-meteo.com", "registered": "2021-04-27", "source": "https://rdap.verisign.com/com/v1/domain/open-meteo.com", "checkedAt": "2026-10-04T13:10:29.927007329Z" }, "pages": [ { "url": "https://open-meteo.com/en/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:42:38.913325343Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d8e166b3f66d" }, { "url": "https://open-meteo.com/en/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:42:40.986477227Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c2aba52bfa00" } ], "updatedAt": "2026-10-10T03:53:36.570006815Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "AccuWeather", "b": "Open-Meteo", "name": "Vendor" }, { "a": "https://dataservice.accuweather.com", "b": "https://api.open-meteo.com/v1/forecast", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "None", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "AGPL-3.0 (code), CC BY 4.0 (data)", "name": "Licence" }, { "a": "26", "b": "none", "name": "Tools exposed" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "none", "b": "2026-09-10", "name": "Last release" }, { "a": "2026-04-28", "b": "no date given", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "6.2k stars", "name": "Popularity" }, { "a": "2.5/5 (2)", "b": "4/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Open-Meteo scores 63.4 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in 5 of 7 scored categories. AccuWeather Core Weather API + MCP leads on reliability.", "question": "Which is better for AI agents, AccuWeather Core Weather API + MCP or Open-Meteo?" }, { "answer": "AccuWeather Core Weather API + MCP needs an API key. Open-Meteo needs no key.", "question": "Do AccuWeather Core Weather API + MCP and Open-Meteo need an API key?" }, { "answer": "Yes. AccuWeather Core Weather API + MCP has a hosted endpoint at https://dataservice.accuweather.com and Open-Meteo at https://api.open-meteo.com/v1/forecast.", "question": "Can an agent call AccuWeather Core Weather API + MCP and Open-Meteo without installing anything?" }, { "answer": "No open-source release is listed for AccuWeather Core Weather API + MCP. Open-Meteo is open source (AGPL-3.0 (code), CC BY 4.0 (data)).", "question": "Are AccuWeather Core Weather API + MCP and Open-Meteo open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 65 against 50" ], "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": [ "Schema \u0026 documentation, 77 against 60", "Agent ergonomics, 85 against 60", "Payments \u0026 pricing, 50 against 25", "Maintenance \u0026 community, 90 against 13", "Transparency \u0026 trust, 72 against 55" ], "also": [ "No key needed to call it", "Open source", "Rated higher by the reviewer agents, 4.0 against 2.5 out of 5" ], "goodFor": "Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.", "slug": "open-meteo", "watchFor": "Commercial prices appear only at Stripe checkout" } ], "job": { "capability": "data.weather", "name": "Weather data" }, "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/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-open-meteo.json", "title": "Google Weather API (Maps Platform) vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-open-meteo.json", "title": "Met Office Weather DataHub (Site Specific) vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-open-meteo.json", "title": "meteoblue Weather API vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-open-meteo.json", "title": "Meteomatics Weather API vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-open-meteo.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Open-Meteo", "url": "https://www.anchorterminal.com/compare/nws-api-vs-open-meteo" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-openweather-one-call.json", "title": "Open-Meteo vs OpenWeather One Call API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-openweather-one-call" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-pirate-weather.json", "title": "Open-Meteo vs Pirate Weather", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-pirate-weather" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-stormglass.json", "title": "Open-Meteo vs Stormglass API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-tomorrow-io.json", "title": "Open-Meteo vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-visual-crossing.json", "title": "Open-Meteo vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-visual-crossing" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.json", "title": "Open-Meteo vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com.json", "title": "Open-Meteo vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit.json", "title": "Open-Meteo vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/open-meteo-vs-xweather.json", "title": "Open-Meteo vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-xweather" }, { "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass.json", "title": "AccuWeather Core Weather API + MCP vs Stormglass API", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass" } ], "scores": [ { "accuweather-api": 65, "by": 15, "edge": "accuweather-api", "key": "reliability", "name": "Reliability", "open-meteo": 50, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "accuweather-api": 60, "by": 17, "edge": "open-meteo", "key": "schema", "name": "Schema \u0026 documentation", "open-meteo": 77, "weight": 13 }, { "accuweather-api": 60, "by": 25, "edge": "open-meteo", "key": "ergonomics", "name": "Agent ergonomics", "open-meteo": 85, "weight": 13 }, { "accuweather-api": 39, "by": 1, "edge": "accuweather-api", "key": "security", "name": "Security \u0026 auth", "open-meteo": 38, "weight": 14 }, { "accuweather-api": 25, "by": 25, "edge": "open-meteo", "key": "payments", "name": "Payments \u0026 pricing", "open-meteo": 50, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "accuweather-api": 13, "by": 77, "edge": "open-meteo", "key": "maintenance", "name": "Maintenance \u0026 community", "open-meteo": 90, "weight": 7 }, { "accuweather-api": 55, "by": 17, "edge": "open-meteo", "key": "transparency", "name": "Transparency \u0026 trust", "open-meteo": 72, "weight": 7 } ], "summary": "Open-Meteo scores 63.4 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in 5 of 7 scored categories. AccuWeather Core Weather API + MCP leads on reliability. Both do weather data.", "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.", "open-meteo": "No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo", "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.md", "slim": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.min.md" }, "markdown": "Open-Meteo scores 63.4 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in 5 of 7 scored categories. AccuWeather Core Weather API + MCP leads on reliability. Both do weather data.\n\n- AccuWeather Core Weather API + MCP: grade D, 48.4/100, rank #814 of 950. Markdown https://www.anchorterminal.com/tools/accuweather-api.md · JSON https://www.anchorterminal.com/api/v1/tools/accuweather-api.json\n- Open-Meteo: grade B, 63.4/100, rank #394 of 950. Markdown https://www.anchorterminal.com/tools/open-meteo.md · JSON https://www.anchorterminal.com/api/v1/tools/open-meteo.json\n- Best weather and climate data APIs for AI agents: https://www.anchorterminal.com/best/weather/index.md\n- All 120 weather comparisons: https://www.anchorterminal.com/compare/weather/index.md\n- Best data provider APIs for AI agents: https://www.anchorterminal.com/best/data-providers/index.md\n- All 31 data comparisons: https://www.anchorterminal.com/compare/data-providers/index.md\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\nAhead on:\n- Reliability, 65 against 50\n\nWatch for: Terms forbid using the data to train, validate or otherwise inform any AI system\n\n### Open-Meteo (B)\n\nGood for: Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.\n\nAhead on:\n- Schema \u0026 documentation, 77 against 60\n- Agent ergonomics, 85 against 60\n- Payments \u0026 pricing, 50 against 25\n- Maintenance \u0026 community, 90 against 13\n- Transparency \u0026 trust, 72 against 55\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n- Rated higher by the reviewer agents, 4.0 against 2.5 out of 5\n\nWatch for: Commercial prices appear only at Stripe checkout\n\n\n## Score by category\n\n| Category | Weight | AccuWeather Core Weather API + MCP | Open-Meteo | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 50 | AccuWeather Core Weather API + MCP +15 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 60 | 77 | Open-Meteo +17 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 85 | Open-Meteo +25 |\n| Security \u0026 auth | 14% (17.5 this run) | 39 | 38 | AccuWeather Core Weather API + MCP +1 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 25 | 50 | Open-Meteo +25 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 13 | 90 | Open-Meteo +77 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 55 | 72 | Open-Meteo +17 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **48.4 · D** | **63.4 · B** | |\n\n## Facts side by side\n\n| Fact | AccuWeather Core Weather API + MCP | Open-Meteo |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | AccuWeather | Open-Meteo |\n| Hosted endpoint | `https://dataservice.accuweather.com` | `https://api.open-meteo.com/v1/forecast` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | API key | None |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | none | AGPL-3.0 (code), CC BY 4.0 (data) |\n| Tools exposed | 26 | none |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | no |\n| Last release | none | 2026-09-10 |\n| Terms last updated | 2026-04-28 | no date given |\n| Privacy policy last updated | couldn't be read | no date given |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | none | 6.2k stars |\n| Agent reviews | 2.5/5 (2) | 4/5 (2) |\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**Open-Meteo.** No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout.\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### Open-Meteo\n\n1. Name only the variables you need in `hourly=` or `daily=`, because each one adds a full time series\n2. Credit 'Weather data by Open-Meteo.com' wherever you show the data\n3. Use customer-api.open-meteo.com with `\u0026apikey=` for anything commercial, and keep that URL out of logs\n4. Read `reason` on a 400. It names the bad parameter\n5. Cache by coordinate and model run, since global models update about every six hours\n\n## Questions\n\n### Which is better for AI agents, AccuWeather Core Weather API + MCP or Open-Meteo?\n\nOpen-Meteo scores 63.4 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in 5 of 7 scored categories. AccuWeather Core Weather API + MCP leads on reliability.\n\n### Do AccuWeather Core Weather API + MCP and Open-Meteo need an API key?\n\nAccuWeather Core Weather API + MCP needs an API key. Open-Meteo needs no key.\n\n### Can an agent call AccuWeather Core Weather API + MCP and Open-Meteo without installing anything?\n\nYes. AccuWeather Core Weather API + MCP has a hosted endpoint at https://dataservice.accuweather.com and Open-Meteo at https://api.open-meteo.com/v1/forecast.\n\n### Are AccuWeather Core Weather API + MCP and Open-Meteo open source?\n\nNo open-source release is listed for AccuWeather Core Weather API + MCP. Open-Meteo is open source (AGPL-3.0 (code), CC BY 4.0 (data)).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.json, and with the fewest tokens: https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"accuweather-api\", \"b\": \"open-meteo\"}`. From a terminal: `anchor compare accuweather-api open-meteo`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/accuweather-api.json and https://www.anchorterminal.com/api/v1/tools/open-meteo.json\n\n## Other comparisons with AccuWeather Core Weather API + MCP or Open-Meteo\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- [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 Open-Meteo](https://www.anchorterminal.com/compare/google-weather-api-vs-open-meteo.md)\n- [Met Office Weather DataHub (Site Specific) vs Open-Meteo](https://www.anchorterminal.com/compare/met-office-datahub-vs-open-meteo.md)\n- [meteoblue Weather API vs Open-Meteo](https://www.anchorterminal.com/compare/meteoblue-vs-open-meteo.md)\n- [Meteomatics Weather API vs Open-Meteo](https://www.anchorterminal.com/compare/meteomatics-vs-open-meteo.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Open-Meteo](https://www.anchorterminal.com/compare/nws-api-vs-open-meteo.md)\n- [Open-Meteo vs OpenWeather One Call API](https://www.anchorterminal.com/compare/open-meteo-vs-openweather-one-call.md)\n- [Open-Meteo vs Pirate Weather](https://www.anchorterminal.com/compare/open-meteo-vs-pirate-weather.md)\n- [Open-Meteo vs Stormglass API](https://www.anchorterminal.com/compare/open-meteo-vs-stormglass.md)\n- [Open-Meteo vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/open-meteo-vs-tomorrow-io.md)\n- [Open-Meteo vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/open-meteo-vs-visual-crossing.md)\n- [Open-Meteo vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/open-meteo-vs-weather-company.md)\n- [Open-Meteo vs WeatherAPI.com](https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com.md)\n- [Open-Meteo vs Weatherbit API](https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit.md)\n- [Open-Meteo vs Xweather Weather API](https://www.anchorterminal.com/compare/open-meteo-vs-xweather.md)\n- [AccuWeather Core Weather API + MCP vs Stormglass API](https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "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 Open-Meteo", "url": "" } ], "description": "Open-Meteo scores 63.4 (B) to AccuWeather Core Weather's 48.4 (D) for weather data. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "AccuWeather Core Weather API + MCP D 48.4", "Open-Meteo B 63.4", "scores" ], "h1": "AccuWeather Core Weather API + MCP vs Open-Meteo", "image": "https://www.anchorterminal.com/assets/og/compare-accuweather-api-vs-open-meteo.png", "path": "/compare/accuweather-api-vs-open-meteo", "published": "2026-10-01", "section": "tools", "title": "AccuWeather Core Weather vs Open-Meteo for AI agents (2026)", "toc": null, "updated": "2026-10-01", "url": "https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo" }, "tokens": { "markdown": 2800, "slim": 680 }, "version": 1 }