{
  "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": 48.8,
        "grade": "D",
        "agentReady": false,
        "rank": 372,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 7,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 60,
          "maintenance": 13,
          "payments": 25,
          "reliability": 65,
          "schema": 60,
          "security": 39,
          "transparency": 60
        },
        "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.",
        "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": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 48.8
          }
        ],
        "editorialScores": {
          "ergonomics": 60,
          "maintenance": 13,
          "payments": 25,
          "reliability": 65,
          "schema": 60,
          "security": 39,
          "transparency": 39
        },
        "provenanceScore": 80,
        "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": 80
      },
      "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": "2026-10-04T23:48:03.769744805Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 32,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 37,
          "p95ms24h": 89,
          "samples24h": 272,
          "samples30d": 898,
          "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": 270,
              "ok": 270
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.accuweather.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T23:49:05.793971867Z"
        },
        "securityTxt": {
          "url": "https://accuweather.com/.well-known/security.txt",
          "state": "unknown",
          "checkedAt": "2026-10-04T15:15:37.910930882Z"
        },
        "llmsTxt": {
          "url": "https://developer.accuweather.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:12.683997664Z"
        },
        "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": "2026-10-04T15:48:56.483628112Z",
            "changedAt": "0001-01-01T00:00:00Z"
          },
          {
            "url": "https://developer.accuweather.com/documentation/terms-of-use",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:42:27.752900841Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d23f608f9840"
          }
        ],
        "updatedAt": "2026-10-04T23:49:05.793971867Z"
      }
    },
    "b": {
      "slug": "pirate-weather",
      "name": "Pirate Weather",
      "vendor": "Pirate Weather",
      "vendorUrl": "https://pirateweather.net",
      "kind": "http-api",
      "category": "weather",
      "summary": "Open-source weather API with Dark Sky-compatible responses, forecasts, alerts and historical data from public weather models.",
      "url": "https://www.anchorterminal.com/tools/pirate-weather",
      "markdownUrl": "https://www.anchorterminal.com/tools/pirate-weather.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/pirate-weather.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/pirate-weather.json",
      "repo": "https://github.com/Pirate-Weather/pirateweather",
      "license": "Apache-2.0 (docs and spec), AGPL-3.0 (API code)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.pirateweather.net/forecast",
      "packages": [],
      "auth": "api-key",
      "authNotes": "The key is a path segment, /forecast/{key}/{lat},{lon}, or an apikey request header with any placeholder in the path. The MCP server takes the same key as the apikey query parameter on its URL. Keys are issued through an Apiable portal at pirate-weather.apiable.io and can take up to 20 minutes to go live.",
      "pricing": "freemium",
      "pricingNotes": "Free at 10,000 calls a month. A $2 a month plan raises that to 20,000, and GitHub Sponsors takes one-off donations. Higher plans are sold through pirate-weather.apiable.io, which renders only with JavaScript, so we couldn't read them (https://pirateweather.net/en/latest/).",
      "priceSummary": "$2 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 907,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://pirateweather.net/en/latest/API/",
      "openapi": "https://github.com/Pirate-Weather/pirateweather/blob/main/PW_OpenAPI.yaml",
      "capabilities": [
        "weather.current",
        "weather.forecast",
        "weather.historical",
        "weather.alerts",
        "data.weather"
      ],
      "tags": [
        "hosted",
        "open-source",
        "freemium",
        "free-tier",
        "no-card",
        "mcp",
        "openapi",
        "status-page"
      ],
      "lastRelease": "2026-09-23",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 66.2,
        "grade": "B",
        "agentReady": false,
        "rank": 162,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 77,
          "maintenance": 80,
          "payments": 30,
          "reliability": 75,
          "schema": 85,
          "security": 45,
          "transparency": 71
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Named model sources and a documented priority order for every field. No SLA, and the terms call it best effort.",
        "strengths": [
          "Named model sources and a documented priority order for every field",
          "OpenAPI 3.1 spec at version 2.10.2 and a dated changelog with a pull request per change",
          "Four releases between 9 July and 23 September 2026",
          "ERA5 history to January 1940 and URMA for the last 10 days in North America",
          "Response-sizing parameters that cut a forecast to the blocks and rows asked for"
        ],
        "weaknesses": [
          "No SLA, and the terms call it best effort",
          "Key in the URL path by default, and only in the query string for the MCP server",
          "Plans above $2 a month sit behind a JavaScript-only portal, and signup needs a person",
          "No security.txt, SECURITY.md or MCP registry entry",
          "The privacy notice and terms are generator templates from 2024 and say nothing on data reuse"
        ],
        "agentNotes": [
          "Send the key in an apikey header and put a placeholder in the path so it stays out of logs",
          "Pass blocks= and hourly_indices= or daily_indices= to get only the rows you need. The default payload is large",
          "Ask for version=2 to get fields Dark Sky never had, such as smoke, fire index and the source list",
          "Point historical requests at timemachine.pirateweather.net with a UNIX timestamp after the coordinate",
          "Watch Ratelimit-Remaining. The cap is monthly, so a runaway loop can spend it in a day"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 66.2
          }
        ],
        "editorialScores": {
          "ergonomics": 77,
          "maintenance": 80,
          "payments": 30,
          "reliability": 75,
          "schema": 85,
          "security": 45,
          "transparency": 55
        },
        "provenanceScore": 86,
        "dataQualityScore": 72
      },
      "connect": {
        "http": "curl -H \"apikey: $PIRATE_WEATHER_API_KEY\" \"https://api.pirateweather.net/forecast/key/51.51,-0.13?units=si\u0026exclude=minutely\u0026version=2\"",
        "claudeCode": "claude mcp add --transport http pirate-weather \"https://mcp.pirateweather.net/mcp?apikey=$PIRATE_WEATHER_API_KEY\"",
        "config": {
          "mcpServers": {
            "pirate-weather": {
              "type": "http",
              "url": "https://mcp.pirateweather.net/mcp?apikey=${PIRATE_WEATHER_API_KEY}"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/weather.current",
        "tool": "https://letme.dev/pirate-weather"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "Supporter plan",
          "unit": "month",
          "usd": 2,
          "note": "20,000 calls a month"
        },
        {
          "item": "Call on the Supporter plan, at the cap",
          "unit": "1k-requests",
          "usd": 0.1,
          "note": "$2 over 20,000 calls"
        }
      ],
      "provenance": {
        "legalEntity": "PirateWeatherAPI (Ontario, Canada)",
        "domain": "pirateweather.net",
        "domainRegistered": "2021-03-01",
        "endpointOnVendorDomain": true,
        "terms": "https://pirateweather.net/en/latest/Apiable/ApiableTerms/",
        "privacy": "https://pirateweather.net/en/latest/Apiable/ApiablePrivacy/",
        "statusPage": "https://pirateweather.xitoring.io/",
        "changelog": "https://pirateweather.net/en/latest/changelog/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "The terms (last updated 2024-09-23) are generator-made, name the company only as PirateWeatherAPI in Ontario, Canada, and cap liability at $100 or what you paid.",
          "The terms of service add one rule of their own, don't circumvent the call limit with multiple accounts, and say the data shouldn't be used for life or property critical applications.",
          "Keys, plans and billing run through a third-party Apiable portal at pirate-weather.apiable.io.",
          "pirateweather.net/.well-known/security.txt returns 404."
        ],
        "score": 86
      },
      "dataQuality": {
        "coverage": "Global, strongest in North America where NBM and HRRR apply at about 3 km, with Canadian models in Canada and DWD MOSMIX stations elsewhere",
        "coverageRating": 4,
        "freshness": "RTMA-RU every 15 minutes, HRRR and NBM hourly, global models every 6 hours",
        "freshnessClass": "hourly",
        "history": "ERA5 reanalysis from January 1940, the project's archive of 1-hour forecasts from June 2024, and URMA analyses for the last 10 days in North America since 2.10.1",
        "historyYears": 86,
        "methodology": "https://pirateweather.net/en/latest/DataSources/",
        "sourcesDisclosed": true,
        "licence": "Apache-2.0 docs, AGPL-3.0 API code, terms silent on data reuse",
        "licenceClass": "unclear",
        "standing": "",
        "standingClass": "none",
        "reuse": "The terms say nothing about caching or redistributing responses and add only two rules, no circumventing the call limit with extra accounts and no life or property critical use. The models behind the data are public data from NOAA, ECMWF open data, ECCC and DWD.",
        "score": 72,
        "checks": null
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/pirate-weather.json",
      "live": {
        "slug": "pirate-weather",
        "probe": {
          "target": "https://api.pirateweather.net/forecast",
          "method": "get",
          "lastAt": "2026-10-04T23:48:14.052557641Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 102,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 105,
          "p95ms24h": 154,
          "samples24h": 272,
          "samples30d": 898,
          "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": 270,
              "ok": 270
            }
          ]
        },
        "vendorStatus": {
          "page": "https://pirateweather.xitoring.io",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:23.776757395Z"
        },
        "githubStars": 910,
        "securityTxt": {
          "url": "https://pirateweather.net/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:49.683216911Z"
        },
        "domain": {
          "domain": "pirateweather.net",
          "registered": "2021-03-01",
          "source": "https://rdap.verisign.com/net/v1/domain/pirateweather.net",
          "checkedAt": "2026-10-04T13:04:40.132666729Z"
        },
        "pages": [
          {
            "url": "https://pirateweather.net/en/latest/changelog/",
            "kind": "changelog",
            "status": 404,
            "checkedAt": "2026-10-04T15:46:44.667604199Z",
            "changedAt": "0001-01-01T00:00:00Z"
          },
          {
            "url": "https://pirateweather.net/en/latest/Apiable/ApiablePrivacy/",
            "kind": "privacy",
            "status": 404,
            "checkedAt": "2026-10-04T15:46:40.536531228Z",
            "changedAt": "0001-01-01T00:00:00Z"
          },
          {
            "url": "https://pirateweather.net/en/latest/Apiable/ApiableTerms/",
            "kind": "terms",
            "status": 404,
            "checkedAt": "2026-10-04T15:46:42.64213118Z",
            "changedAt": "0001-01-01T00:00:00Z"
          }
        ],
        "updatedAt": "2026-10-04T23:48:14.052557641Z"
      }
    },
    "summary": "Pirate Weather has a score of 66.2 (B) against AccuWeather Core Weather API + MCP's 48.8 (D). Both do weather current. The largest gap is maintenance \u0026 community, 67 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather",
    "json": "https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather.md",
    "slim": "https://www.anchorterminal.com/compare/accuweather-api-vs-pirate-weather.min.md"
  },
  "markdown": "Pirate Weather has a score of 66.2 (B) against AccuWeather Core Weather API + MCP's 48.8 (D). Both do weather current. The largest gap is maintenance \u0026 community, 67 points.\n\n- AccuWeather Core Weather API + MCP: grade D, 48.8/100, rank #372 of 452. Markdown https://www.anchorterminal.com/tools/accuweather-api.md · JSON https://www.anchorterminal.com/api/v1/tools/accuweather-api.json\n- Pirate Weather: grade B, 66.2/100, rank #162 of 452. Markdown https://www.anchorterminal.com/tools/pirate-weather.md · JSON https://www.anchorterminal.com/api/v1/tools/pirate-weather.json\n\n## Which one, for what\n\nPick AccuWeather Core Weather API + MCP for nothing in particular (no category where it leads by five points or more).\n\nPick Pirate Weather for reliability (+10), schema \u0026 documentation (+25), agent ergonomics (+17), security \u0026 auth (+6), payments \u0026 pricing (+5), maintenance \u0026 community (+67), transparency \u0026 trust (+11).\n\n## Score by category\n\n| Category | Weight | AccuWeather Core Weather API + MCP | Pirate Weather | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 75 | Pirate Weather +10 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 60 | 85 | Pirate Weather +25 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 77 | Pirate Weather +17 |\n| Security \u0026 auth | 14% (17.5 this run) | 39 | 45 | Pirate Weather +6 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 25 | 30 | Pirate Weather +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 13 | 80 | Pirate Weather +67 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 60 | 71 | Pirate Weather +11 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **48.8 · D** | **66.2 · B** | |\n\n## Facts side by side\n\n| Fact | AccuWeather Core Weather API + MCP | Pirate Weather |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | AccuWeather | Pirate Weather |\n| Hosted endpoint | `https://dataservice.accuweather.com` | `https://api.pirateweather.net/forecast` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | none | Apache-2.0 (docs and spec), AGPL-3.0 (API code) |\n| Tools exposed | 26 | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | no |\n| MCP registry | not listed | not listed |\n| Last release | none | 2026-09-23 |\n| Popularity | none | 907 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**Pirate Weather.** Named model sources and a documented priority order for every field. No SLA, and the terms call it best effort.\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### Pirate Weather\n\n1. Send the key in an apikey header and put a placeholder in the path so it stays out of logs\n2. Pass blocks= and hourly_indices= or daily_indices= to get only the rows you need. The default payload is large\n3. Ask for version=2 to get fields Dark Sky never had, such as smoke, fire index and the source list\n4. Point historical requests at timemachine.pirateweather.net with a UNIX timestamp after the coordinate\n5. Watch Ratelimit-Remaining. The cap is monthly, so a runaway loop can spend it in a day\n\n## Other comparisons with AccuWeather Core Weather API + MCP or Pirate Weather\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 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 Visual Crossing Weather API](https://www.anchorterminal.com/compare/accuweather-api-vs-visual-crossing.md)\n- [AccuWeather Core Weather API + MCP vs WeatherAPI.com](https://www.anchorterminal.com/compare/accuweather-api-vs-weatherapi-com.md)\n- [Google Weather API (Maps Platform) vs Pirate Weather](https://www.anchorterminal.com/compare/google-weather-api-vs-pirate-weather.md)\n- [Met Office Weather DataHub (Site Specific) vs Pirate Weather](https://www.anchorterminal.com/compare/met-office-datahub-vs-pirate-weather.md)\n- [NOAA National Weather Service API (api.weather.gov) vs Pirate Weather](https://www.anchorterminal.com/compare/nws-api-vs-pirate-weather.md)\n- [OpenWeather One Call API vs Pirate Weather](https://www.anchorterminal.com/compare/openweather-one-call-vs-pirate-weather.md)\n- [Pirate Weather vs Visual Crossing Weather API](https://www.anchorterminal.com/compare/pirate-weather-vs-visual-crossing.md)\n- [Pirate Weather vs WeatherAPI.com](https://www.anchorterminal.com/compare/pirate-weather-vs-weatherapi-com.md)\n",
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        "name": "AccuWeather Core Weather API + MCP vs Pirate Weather",
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    "description": "Pirate Weather has a score of 66.2 (B) against AccuWeather Core Weather API + MCP's 48.8 (D). Both do weather current. The largest gap is maintenance \u0026 community, 67 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "AccuWeather Core Weather API + MCP vs Pirate Weather for AI agents",
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