{ "data": { "a": { "slug": "stormglass", "name": "Stormglass API", "vendor": "Storm Glass AB", "vendorUrl": "https://stormglass.io", "kind": "http-api", "category": "weather", "summary": "Weather and marine data API from Storm Glass AB of Sweden. It returns hourly forecasts, ERA5 history from 2014, tides, solar, soil and ocean parameters by coordinates, per source or blended, over HTTPS with an API key.", "url": "https://www.anchorterminal.com/tools/stormglass", "markdownUrl": "https://www.anchorterminal.com/tools/stormglass.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/stormglass.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/stormglass.json", "license": "Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use", "transports": [ "http" ], "remoteUrl": "https://api.stormglass.io/v2", "packages": [], "auth": "api-key", "authNotes": "Self-serve key from a browser signup at dashboard.stormglass.io. The key goes in the `Authorization` header with no prefix. No scopes, and no key rotation or second key is described in the docs.", "pricing": "freemium", "pricingNotes": "Free plan at 10 requests a day for non-commercial evaluation. Paid plans are monthly subscriptions in euros with daily quotas and no overage price, Small 19, Medium 49 and Large 129 euros a month, and commercial use needs Medium or higher. Prices are in euros only, so unitPrices is empty (https://stormglass.io/pricing/, checked 2026-10-09).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the pricing page or the FAQ. The API uses HTTP 402 to mean a spent daily quota, with no payment protocol behind it (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://docs.stormglass.io/", "capabilities": [ "weather.forecast", "weather.marine", "weather.historical", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "eu" ], "lastRelease": "2026-02-26", "graded": true, "anchor": { "graded": true, "score": 39.9, "grade": "E", "agentReady": false, "rank": 914, "ranked": true, "rankOf": 950, "categoryRank": 15, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 15, "payments": 25, "reliability": 34, "schema": 40, "security": 44, "transparency": 45 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "A read-only weather and marine API with about 70 hourly parameters, per-source values from named national models, tide data and ERA5 history from 2014. No OpenAPI file, status page, SDK or security page was found, the free plan allows 10 requests a day, and the docs and FAQ disagree on the status code for a spent quota.", "bestFor": "Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response.", "strengths": [ "One request returns the same parameter from each named source (ECMWF, NOAA, DWD, Met Office, MET Norway and others), or one blended value with `source=sg`", "Marine coverage in the same API, with waves, swell, currents, sea ice, water temperature, tide extremes, sea level against seven datums and bathymetry", "`params` and `source` limit each response to the fields asked for, and every response carries `dailyQuota` and `requestCount` in `meta`", "The key travels in the `Authorization` header, and every documented endpoint is a GET", "Plan prices and daily quotas are public without a login, from 0 to 129 euros a month" ], "weaknesses": [ "No OpenAPI file, llms.txt, official SDK or changelog was found. The docs are eleven Markdown pages", "No status page, SLA, security.txt, disclosure policy, certification or DPA was found, and the terms disclaim uninterrupted service", "Free plan is 10 requests a day, non-commercial, and the terms call it an evaluation plan not meant for indefinite use", "The docs give 402 for a spent daily quota and the FAQ says Too Many Requests. No Retry-After or per-second limit is documented", "The privacy text is a few paragraphs inside the terms, with no retention period or hosting location, and the terms allow changes to the service without notice" ], "agentNotes": [ "Send the key as `Authorization: KEY` with no Bearer prefix. A missing or wrong key returns 403 with `{\"errors\":{\"key\":\"API key is invalid\"}}`", "Always pass `source=sg` or a short source list on `/weather/point`. The default is every source, which multiplies the size of each hourly record", "Treat 402 as a spent daily quota, not a billing failure, and stop until the next day. Read `meta.requestCount` against `meta.dailyQuota` on each response", "Use `/historical/point` for past dates, at most 10 days a call and nothing newer than about 7 days. `/weather/point` looks back 14 days only", "Send and read all times in UTC. Tide sea levels are relative to the chosen datum (MSL by default) and are not water depth" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 39.9 } ], "editorialScores": { "ergonomics": 65, "maintenance": 15, "payments": 25, "reliability": 34, "schema": 40, "security": 44, "transparency": 22 }, "provenanceScore": 68 }, "connect": { "http": "curl -H \"Authorization: API_KEY\" \"https://api.stormglass.io/v2/weather/point?lat=58.7984\u0026lng=17.8081\u0026params=waveHeight,airTemperature\u0026source=sg\"" }, "letme": { "capability": "https://letme.dev/weather.forecast", "tool": "https://letme.dev/stormglass" }, "area": "domain-data", "provenance": { "legalEntity": "Storm Glass AB", "domain": "stormglass.io", "domainRegistered": "2018-01-30", "endpointOnVendorDomain": true, "terms": "https://stormglass.io/terms-and-conditions/", "privacy": "https://stormglass.io/terms-and-conditions/", "statusPage": "", "changelog": "https://stormglass.io/blog/", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "One page, dated 17 March 2026, holds the Terms and Conditions and the Privacy Policy. It says it applies to all stormglass.io Services provided by Storm Glass AB, under Swedish law with arbitration in Stockholm. No postal address or company number is on it.", "The privacy text is a section of that page and names HubSpot. No DPA or separate privacy policy was found.", "stormglass.io/.well-known/security.txt returns 404.", "No status page is linked from the site, the docs or the terms.", "No changelog was found. The blog announces new data sources, the latest on 26 February 2026 (ERA5) and 13 February 2026 (NOAA AIGFS).", "RDAP for stormglass.io gives a registration date of 2018-01-30." ], "score": 68 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/stormglass.json", "live": { "slug": "stormglass", "probe": { "target": "https://api.stormglass.io/v2", "method": "get", "lastAt": "2026-10-10T03:53:45.527022195Z", "lastOk": true, "lastStatus": 404, "lastMs": 89, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 92, "p95ms24h": 178, "samples24h": 125, "samples30d": 125, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "pages": [ { "url": "https://stormglass.io/blog/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:46:02.001753939Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5a37464aafd0" }, { "url": "https://stormglass.io/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:46:04.76357096Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "f271b3b3e8f6" }, { "url": "https://stormglass.io/terms-and-conditions/", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:46:06.564080089Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b9087482d5aa" } ], "updatedAt": "2026-10-10T03:53:45.527022195Z" } }, "answer": "Weatherbit API scores 57.7 (C) on agent readiness against Stormglass API's 39.9 (E), and leads in 5 of 7 scored categories. Stormglass API leads on security \u0026 auth.", "b": { "slug": "weatherbit", "name": "Weatherbit API", "vendor": "Weatherbit LLC", "vendorUrl": "https://www.weatherbit.io", "kind": "http-api", "category": "weather", "summary": "Weather data API from Weatherbit LLC of North Carolina. It returns current conditions, daily, hourly and minutely forecasts, severe weather alerts, historical weather, air quality and agricultural and energy datasets by coordinates, over HTTPS with an API key.", "url": "https://www.anchorterminal.com/tools/weatherbit", "markdownUrl": "https://www.anchorterminal.com/tools/weatherbit.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/weatherbit.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/weatherbit.json", "repo": "https://github.com/weatherbit/weatherbit-python", "license": "Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT", "transports": [ "http" ], "remoteUrl": "https://api.weatherbit.io/v2.0", "packages": [ { "registry": "pypi", "name": "pyweatherbit" } ], "auth": "api-key", "authNotes": "Self-serve key from a browser signup. The key goes in the `key` query parameter on every request, and no header option is documented. Free, Standard and Plus accounts have one key. Business has up to 10.", "pricing": "freemium", "pricingNotes": "Free plan at 50 requests a day for non-commercial use, and a 21-day Business trial with no card and up to 1,500 requests a day. Paid plans are monthly subscriptions with daily quotas and no overage price. The pricing page showed us pounds only, Standard £40, Plus £179 and Business £410 a month, Enterprise from £820. Billing can be in USD, EUR or GBP, and we did not see the dollar prices (https://www.weatherbit.io/pricing, checked 2026-10-08).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the Swagger spec or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": 78, "asOf": "2026-10-08" }, "docsUrl": "https://www.weatherbit.io/api", "openapi": "https://www.weatherbit.io/static/swagger.json", "capabilities": [ "weather.current", "weather.forecast", "weather.alerts", "weather.historical", "data.weather" ], "tags": [ "hosted", "freemium", "free-tier", "no-card", "closed-source", "openapi", "python", "status-page", "us" ], "lastRelease": "2025-08-01", "graded": true, "anchor": { "graded": true, "score": 57.7, "grade": "C", "agentReady": false, "rank": 599, "ranked": true, "rankOf": 950, "categoryRank": 7, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 61, "maintenance": 21, "payments": 30, "reliability": 91, "schema": 72, "security": 39, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A read-only weather API with a Swagger 2.0 spec, quota headers on every response and a status page showing 100 per cent on three API monitors over 90 days. The key travels only in the query string, the free plan allows 50 requests a day for non-commercial use, and the last dated API announcement is 1 August 2025.", "bestFor": "An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates.", "strengths": [ "Status page with three API monitors, each at 100 per cent over the 90 days to 8 October 2026", "Swagger 2.0 spec at /static/swagger.json with 21 GET endpoints, typed response models and 400, 403, 429 and 500 bodies", "Every response carries X-RateLimit-Limit, X-RateLimit-Remaining and X-RateLimit-Reset, and /subscription/usage returns the same counters", "Daily and per-second limits published for every plan, from 50 a day on Free to 2 million a day on Business", "The privacy policy states that API request logs are kept for no more than two weeks" ], "weaknesses": [ "The key is accepted only as the `key` query parameter, and the spec lists plain http as a scheme", "Free plan is 50 requests a day, non-commercial, with a 7-day daily forecast and no hourly forecast or history", "The last dated API announcement on the blog is 1 August 2025, and the Python SDK was last released in February 2024", "No security.txt, disclosure policy, certification or DPA found on the site", "The terms let Weatherbit end access at any time without notice or reason, and no deprecation policy was found" ], "agentNotes": [ "Pass lat and lon. City, postal code and station lookups are accepted, but the docs recommend coordinates and mark station ID as use with caution", "Read X-RateLimit-Remaining and X-RateLimit-Reset on each response. Daily quotas reset at 00:00 UTC and a spent quota returns 429 until then", "Treat HTTP 204 with an empty body as no data found, not as an error", "Split historical requests into ranges of one month or less. History needs the Plus plan or higher and has its own daily quota", "Keep the key out of logs. It is part of the URL on every call, so always use https://api.weatherbit.io/v2.0" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.7 } ], "editorialScores": { "ergonomics": 61, "maintenance": 21, "payments": 30, "reliability": 91, "schema": 72, "security": 39, "transparency": 42 }, "provenanceScore": 84 }, "connect": { "install": "pip install pyweatherbit", "http": "curl -s \"https://api.weatherbit.io/v2.0/forecast/daily?days=16\u0026key=API_KEY\u0026lat=35.7796\u0026lon=-78.6382\"" }, "letme": { "capability": "https://letme.dev/weather.current", "tool": "https://letme.dev/weatherbit" }, "area": "domain-data", "provenance": { "legalEntity": "Weatherbit LLC", "domain": "weatherbit.io", "domainRegistered": "2016-12-25", "endpointOnVendorDomain": true, "terms": "https://www.weatherbit.io/terms", "privacy": "https://www.weatherbit.io/privacy", "statusPage": "https://status.weatherbit.io", "changelog": "https://blog.weatherbit.io/tag/news/", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms (updated 1 May 2025) cover the Weatherbit API and the website in one document and name Weatherbit LLC, 921 Town Centre Blvd #1129, Clayton, NC 27520, under North Carolina law.", "The privacy policy (updated 26 December 2023) covers the site and the API, and says hosting is in the United States and Canada. The help centre says the API runs in North America and Europe, and our unauthenticated call answered with an api_region: EU header.", "www.weatherbit.io/.well-known/security.txt returns 404.", "status.weatherbit.io runs on UptimeRobot with three monitors, API Central, East and West.", "The changelog is the news tag of the vendor's blog. Its latest post is dated 1 August 2025.", "RDAP for weatherbit.io gives a registration date of 2016-12-25." ], "score": 84 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/weatherbit.json", "live": { "slug": "weatherbit", "probe": { "target": "https://api.weatherbit.io/v2.0", "method": "get", "lastAt": "2026-10-10T03:53:49.51928104Z", "lastOk": true, "lastStatus": 400, "lastMs": 93, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 96, "p95ms24h": 171, "samples24h": 249, "samples30d": 360, "days": [ { "date": "2026-10-08", "probes": 70, "ok": 70 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "vendorStatus": { "page": "https://status.weatherbit.io", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T00:51:25.080791262Z" }, "versions": [ { "registry": "pypi", "name": "pyweatherbit", "version": "2.2.2", "released": "2024-02-14", "seenAt": "2026-10-09T17:27:56.755620697Z" } ], "githubStars": 28, "pypiWeekly": 117, "securityTxt": { "url": "https://weatherbit.io/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:40:33.765838491Z" }, "pages": [ { "url": "https://blog.weatherbit.io/tag/news/", "kind": "changelog", "status": 304, "checkedAt": "2026-10-09T18:33:11.843835841Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "427edce4e014" }, { "url": "https://www.weatherbit.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:55:36.607920196Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e20e5b8f5c6c" }, { "url": "https://www.weatherbit.io/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:55:38.720789067Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "05c1785284ba" }, { "url": "https://www.weatherbit.io/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:55:40.693204489Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5f7fdca11857" } ], "updatedAt": "2026-10-10T03:53:49.51928104Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Storm Glass AB", "b": "Weatherbit LLC", "name": "Vendor" }, { "a": "https://api.stormglass.io/v2", "b": "https://api.weatherbit.io/v2.0", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use", "b": "Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "2026-02-26", "b": "2025-08-01", "name": "Last release" }, { "a": "no date given", "b": "2025-05-01", "name": "Terms last updated" }, { "a": "no date given", "b": "2023-12-26", "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": "not found in the text", "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": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "78 PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Weatherbit API scores 57.7 (C) on agent readiness against Stormglass API's 39.9 (E), and leads in 5 of 7 scored categories. Stormglass API leads on security \u0026 auth.", "question": "Which is better for AI agents, Stormglass API or Weatherbit API?" }, { "answer": "Both need an API key.", "question": "Do Stormglass API and Weatherbit API need an API key?" }, { "answer": "Yes. Stormglass API has a hosted endpoint at https://api.stormglass.io/v2 and Weatherbit API at https://api.weatherbit.io/v2.0.", "question": "Can an agent call Stormglass API and Weatherbit API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Security \u0026 auth, 44 against 39" ], "also": null, "goodFor": "Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response.", "slug": "stormglass", "watchFor": "No OpenAPI file, llms.txt, official SDK or changelog was found. The docs are eleven Markdown pages" }, { "aheadOn": [ "Reliability, 91 against 34", "Schema \u0026 documentation, 72 against 40", "Payments \u0026 pricing, 30 against 25", "Maintenance \u0026 community, 21 against 15", "Transparency \u0026 trust, 63 against 45" ], "also": [ "Free to start without a card" ], "goodFor": "An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates.", "slug": "weatherbit", "watchFor": "The key is accepted only as the `key` query parameter, and the spec lists plain http as a scheme" } ], "job": { "capability": "weather.forecast", "name": "Weather forecasts" }, "others": [ { "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-weatherbit.json", "title": "Google Weather API (Maps Platform) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit.json", "title": "Met Office Weather DataHub (Site Specific) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit.json", "title": "meteoblue Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-weatherbit.json", "title": "Meteomatics Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.json", "title": "OpenWeather One Call API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit.json", "title": "Pirate Weather vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.json", "title": "Tomorrow.io Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/visual-crossing-vs-weatherbit.json", "title": "Visual Crossing Weather API vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/visual-crossing-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.json", "title": "The Weather Company Data APIs vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/weather-company-vs-weatherbit" }, { "json": "https://www.anchorterminal.com/compare/weatherapi-com-vs-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" }, { "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-weatherbit.json", "title": "Open-Meteo vs Weatherbit API", "url": "https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit" }, { "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" }, { "json": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.json", "title": "Google Weather API (Maps Platform) vs Stormglass API", "url": "https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/met-office-datahub-vs-stormglass.json", "title": "Met Office Weather DataHub (Site Specific) vs Stormglass API", "url": "https://www.anchorterminal.com/compare/met-office-datahub-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/meteoblue-vs-stormglass.json", "title": "meteoblue Weather API vs Stormglass API", "url": "https://www.anchorterminal.com/compare/meteoblue-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/meteomatics-vs-stormglass.json", "title": "Meteomatics Weather API vs Stormglass API", "url": "https://www.anchorterminal.com/compare/meteomatics-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/nws-api-vs-stormglass.json", "title": "NOAA National Weather Service API (api.weather.gov) vs Stormglass API", "url": "https://www.anchorterminal.com/compare/nws-api-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/openweather-one-call-vs-stormglass.json", "title": "OpenWeather One Call API vs Stormglass API", "url": "https://www.anchorterminal.com/compare/openweather-one-call-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/pirate-weather-vs-stormglass.json", "title": "Pirate Weather vs Stormglass API", "url": "https://www.anchorterminal.com/compare/pirate-weather-vs-stormglass" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-tomorrow-io.json", "title": "Stormglass API vs Tomorrow.io Weather API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-tomorrow-io" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-visual-crossing.json", "title": "Stormglass API vs Visual Crossing Weather API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-visual-crossing" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-weather-company.json", "title": "Stormglass API vs The Weather Company Data APIs", "url": "https://www.anchorterminal.com/compare/stormglass-vs-weather-company" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-weatherapi-com.json", "title": "Stormglass API vs WeatherAPI.com", "url": "https://www.anchorterminal.com/compare/stormglass-vs-weatherapi-com" }, { "json": "https://www.anchorterminal.com/compare/stormglass-vs-xweather.json", "title": "Stormglass API vs Xweather Weather API", "url": "https://www.anchorterminal.com/compare/stormglass-vs-xweather" } ], "scores": [ { "by": 57, "edge": "weatherbit", "key": "reliability", "name": "Reliability", "stormglass": 34, "weatherbit": 91, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 32, "edge": "weatherbit", "key": "schema", "name": "Schema \u0026 documentation", "stormglass": 40, "weatherbit": 72, "weight": 13 }, { "by": 4, "edge": "stormglass", "key": "ergonomics", "name": "Agent ergonomics", "stormglass": 65, "weatherbit": 61, "weight": 13 }, { "by": 5, "edge": "stormglass", "key": "security", "name": "Security \u0026 auth", "stormglass": 44, "weatherbit": 39, "weight": 14 }, { "by": 5, "edge": "weatherbit", "key": "payments", "name": "Payments \u0026 pricing", "stormglass": 25, "weatherbit": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 6, "edge": "weatherbit", "key": "maintenance", "name": "Maintenance \u0026 community", "stormglass": 15, "weatherbit": 21, "weight": 7 }, { "by": 18, "edge": "weatherbit", "key": "transparency", "name": "Transparency \u0026 trust", "stormglass": 45, "weatherbit": 63, "weight": 7 } ], "summary": "Weatherbit API scores 57.7 (C) on agent readiness against Stormglass API's 39.9 (E), and leads in 5 of 7 scored categories. Stormglass API leads on security \u0026 auth. Both do weather forecasts.", "verdicts": { "stormglass": "A read-only weather and marine API with about 70 hourly parameters, per-source values from named national models, tide data and ERA5 history from 2014. No OpenAPI file, status page, SDK or security page was found, the free plan allows 10 requests a day, and the docs and FAQ disagree on the status code for a spent quota.", "weatherbit": "A read-only weather API with a Swagger 2.0 spec, quota headers on every response and a status page showing 100 per cent on three API monitors over 90 days. The key travels only in the query string, the free plan allows 50 requests a day for non-commercial use, and the last dated API announcement is 1 August 2025." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit", "json": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.md", "slim": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.min.md" }, "markdown": "Weatherbit API scores 57.7 (C) on agent readiness against Stormglass API's 39.9 (E), and leads in 5 of 7 scored categories. Stormglass API leads on security \u0026 auth. Both do weather forecasts.\n\n- Stormglass API: grade E, 39.9/100, rank #914 of 950. Markdown https://www.anchorterminal.com/tools/stormglass.md · JSON https://www.anchorterminal.com/api/v1/tools/stormglass.json\n- Weatherbit API: grade C, 57.7/100, rank #599 of 950. Markdown https://www.anchorterminal.com/tools/weatherbit.md · JSON https://www.anchorterminal.com/api/v1/tools/weatherbit.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\n## Which one, for what\n\n### Stormglass API (E)\n\nGood for: Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response.\n\nAhead on:\n- Security \u0026 auth, 44 against 39\n\nWatch for: No OpenAPI file, llms.txt, official SDK or changelog was found. The docs are eleven Markdown pages\n\n### Weatherbit API (C)\n\nGood for: An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates.\n\nAhead on:\n- Reliability, 91 against 34\n- Schema \u0026 documentation, 72 against 40\n- Payments \u0026 pricing, 30 against 25\n- Maintenance \u0026 community, 21 against 15\n- Transparency \u0026 trust, 63 against 45\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: The key is accepted only as the `key` query parameter, and the spec lists plain http as a scheme\n\n\n## Score by category\n\n| Category | Weight | Stormglass API | Weatherbit API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 34 | 91 | Weatherbit API +57 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 40 | 72 | Weatherbit API +32 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 61 | Stormglass API +4 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 39 | Stormglass API +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 25 | 30 | Weatherbit API +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 15 | 21 | Weatherbit API +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 45 | 63 | Weatherbit API +18 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **39.9 · E** | **57.7 · C** | |\n\n## Facts side by side\n\n| Fact | Stormglass API | Weatherbit API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Storm Glass AB | Weatherbit LLC |\n| Hosted endpoint | `https://api.stormglass.io/v2` | `https://api.weatherbit.io/v2.0` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use | Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT |\n| Read-only variant documented | no | no |\n| llms.txt | no | no |\n| Last release | 2026-02-26 | 2025-08-01 |\n| Terms last updated | no date given | 2025-05-01 |\n| Privacy policy last updated | no date given | 2023-12-26 |\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 | not found in the text | 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 | yes | not found in the text |\n| Popularity | none | 78 PyPI/wk |\n\n## Verdicts\n\n**Stormglass API.** A read-only weather and marine API with about 70 hourly parameters, per-source values from named national models, tide data and ERA5 history from 2014. No OpenAPI file, status page, SDK or security page was found, the free plan allows 10 requests a day, and the docs and FAQ disagree on the status code for a spent quota.\n\n**Weatherbit API.** A read-only weather API with a Swagger 2.0 spec, quota headers on every response and a status page showing 100 per cent on three API monitors over 90 days. The key travels only in the query string, the free plan allows 50 requests a day for non-commercial use, and the last dated API announcement is 1 August 2025.\n\n## Before you call either\n\n### Stormglass API\n\n1. Send the key as `Authorization: KEY` with no Bearer prefix. A missing or wrong key returns 403 with `{\"errors\":{\"key\":\"API key is invalid\"}}`\n2. Always pass `source=sg` or a short source list on `/weather/point`. The default is every source, which multiplies the size of each hourly record\n3. Treat 402 as a spent daily quota, not a billing failure, and stop until the next day. Read `meta.requestCount` against `meta.dailyQuota` on each response\n4. Use `/historical/point` for past dates, at most 10 days a call and nothing newer than about 7 days. `/weather/point` looks back 14 days only\n5. Send and read all times in UTC. Tide sea levels are relative to the chosen datum (MSL by default) and are not water depth\n\n### Weatherbit API\n\n1. Pass lat and lon. City, postal code and station lookups are accepted, but the docs recommend coordinates and mark station ID as use with caution\n2. Read X-RateLimit-Remaining and X-RateLimit-Reset on each response. Daily quotas reset at 00:00 UTC and a spent quota returns 429 until then\n3. Treat HTTP 204 with an empty body as no data found, not as an error\n4. Split historical requests into ranges of one month or less. History needs the Plus plan or higher and has its own daily quota\n5. Keep the key out of logs. It is part of the URL on every call, so always use https://api.weatherbit.io/v2.0\n\n## Questions\n\n### Which is better for AI agents, Stormglass API or Weatherbit API?\n\nWeatherbit API scores 57.7 (C) on agent readiness against Stormglass API's 39.9 (E), and leads in 5 of 7 scored categories. Stormglass API leads on security \u0026 auth.\n\n### Do Stormglass API and Weatherbit API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Stormglass API and Weatherbit API without installing anything?\n\nYes. Stormglass API has a hosted endpoint at https://api.stormglass.io/v2 and Weatherbit API at https://api.weatherbit.io/v2.0.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.json, and with the fewest tokens: https://www.anchorterminal.com/compare/stormglass-vs-weatherbit.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"stormglass\", \"b\": \"weatherbit\"}`. From a terminal: `anchor compare stormglass weatherbit`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/stormglass.json and https://www.anchorterminal.com/api/v1/tools/weatherbit.json\n\n## Other comparisons with Stormglass API or Weatherbit API\n\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 Weatherbit API](https://www.anchorterminal.com/compare/google-weather-api-vs-weatherbit.md)\n- [Met Office Weather DataHub (Site Specific) vs Weatherbit API](https://www.anchorterminal.com/compare/met-office-datahub-vs-weatherbit.md)\n- [meteoblue Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/meteoblue-vs-weatherbit.md)\n- [Meteomatics Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/meteomatics-vs-weatherbit.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Weatherbit API](https://www.anchorterminal.com/compare/nws-api-vs-weatherbit.md)\n- [OpenWeather One Call API vs Weatherbit API](https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.md)\n- [Pirate Weather vs Weatherbit API](https://www.anchorterminal.com/compare/pirate-weather-vs-weatherbit.md)\n- [Tomorrow.io Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/tomorrow-io-vs-weatherbit.md)\n- [Visual Crossing Weather API vs Weatherbit API](https://www.anchorterminal.com/compare/visual-crossing-vs-weatherbit.md)\n- [The Weather Company Data APIs vs Weatherbit API](https://www.anchorterminal.com/compare/weather-company-vs-weatherbit.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- [Open-Meteo vs Stormglass API](https://www.anchorterminal.com/compare/open-meteo-vs-stormglass.md)\n- [Open-Meteo vs Weatherbit API](https://www.anchorterminal.com/compare/open-meteo-vs-weatherbit.md)\n- [AccuWeather Core Weather API + MCP vs Stormglass API](https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass.md)\n- [Google Weather API (Maps Platform) vs Stormglass API](https://www.anchorterminal.com/compare/google-weather-api-vs-stormglass.md)\n- [Met Office Weather DataHub (Site Specific) vs Stormglass API](https://www.anchorterminal.com/compare/met-office-datahub-vs-stormglass.md)\n- [meteoblue Weather API vs Stormglass API](https://www.anchorterminal.com/compare/meteoblue-vs-stormglass.md)\n- [Meteomatics Weather API vs Stormglass API](https://www.anchorterminal.com/compare/meteomatics-vs-stormglass.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Stormglass API](https://www.anchorterminal.com/compare/nws-api-vs-stormglass.md)\n- [OpenWeather One Call API vs Stormglass API](https://www.anchorterminal.com/compare/openweather-one-call-vs-stormglass.md)\n- [Pirate Weather vs Stormglass API](https://www.anchorterminal.com/compare/pirate-weather-vs-stormglass.md)\n- [Stormglass API vs Tomorrow.io Weather API](https://www.anchorterminal.com/compare/stormglass-vs-tomorrow-io.md)\n- [Stormglass API vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/stormglass-vs-visual-crossing.md)\n- [Stormglass API vs The Weather Company Data APIs](https://www.anchorterminal.com/compare/stormglass-vs-weather-company.md)\n- [Stormglass API vs WeatherAPI.com](https://www.anchorterminal.com/compare/stormglass-vs-weatherapi-com.md)\n- [Stormglass API vs Xweather Weather API](https://www.anchorterminal.com/compare/stormglass-vs-xweather.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": "Stormglass API vs Weatherbit API", "url": "" } ], "description": "Weatherbit scores 57.7 (C) to Stormglass's 39.9 (E) for weather forecasts. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Stormglass API E 39.9", "Weatherbit API C 57.7", "scores" ], "h1": "Stormglass API vs Weatherbit API", "image": "https://www.anchorterminal.com/assets/og/compare-stormglass-vs-weatherbit.png", "path": "/compare/stormglass-vs-weatherbit", "published": "2026-10-01", "section": "tools", "title": "Stormglass vs Weatherbit for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/stormglass-vs-weatherbit" }, "tokens": { "markdown": 2800, "slim": 680 }, "version": 1 }