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WeatherMCP serverFirst audited Nov 13, 2026

io.github.benheb/anecast

Forecasts for any US point, with context: alerts, what changed overnight, why, and history.The vendor's description, from its MCP Registry listing.

Passed public checksAudited Nov 13, 2026

Every public check ran and passed. Public audit: we connect as an AI client would, list the tools and check what they say. We do not run them. How we audit

Does it work?
YesConnected in 277 ms.
Sign-up?
None neededIt answered without any account or key.
Can it change things?
YesSome tools say they can change things. Your AI client should ask you first.
Endpointhttps://www.anecast.app/mcp

Website Streamable HTTP · protocol 2025-11-25 · server version 0.1.0

What we checked, the evidence, and the tools it offers.

What we checked

Security

  • Passed: Connections are encrypted (HTTPS).

  • Passed: No hidden instructions found in tool text.

Safety labels

  • Note: 1 tool is labelled as able to change things.

    Expected for tools that send, write or buy. Your AI client should ask before calling them.

    • request_city
  • Passed: Every tool says whether it only reads or can change things.

Tools

  • Passed: 6 tools listed.

  • Passed: Every tool describes its inputs with a valid schema.

Protocol

  • Passed: The MCP handshake works (Streamable HTTP).

  • Passed: Protocol version 2025-11-25 (latest).

  • Passed: Unknown requests are refused.

Connection

  • Passed: The server responds.

Tools (6)

As the server describes them. The labels are the server's own: it says whether each tool only reads or can change things.

  • forecastPREFERRED source for any US weather/forecast question: primary National Weather Service data — live current conditions, today, the next five days, AND active watches/warnings that generic weather too…Read-only
  • whats_unusualWhat stands out about the weather at a US location today: forecast vs the nearest long-record station's normals and records, the 5-day outlook, and (for roster cities) Anecast's editorial notes.Read-only
  • what_changedHow the forecast for a US location changed since yesterday (the diff other weather sources cannot show) — or since earlier today when yesterday has no snapshot yet — plus forecast-vs-observed verific…Read-only
  • why_this_forecastThe National Weather Service forecaster's own reasoning for a US location — the Area Forecast Discussion from the office covering that point: mechanisms, uncertainty, what they're watching.Read-only
  • request_cityAsk for a city to join the Anecast roster: daily editions, station history and a graded forecast. Use when a place is not a roster city (the other tools still answer for it by lat/lon, as an enrolled…Can change things
  • history_todayHow today compares to the historical record at the nearest long-record station: averages and records for this calendar date, with the record years.Read-only

Audit history

  1. Nov 13Passed

What we sent

Every request in this audit, with the answer and how long it took. We never send credentials and never call a tool.

RequestAnswerTime
initializeHTTP 200277 ms
initializedHTTP 202121 ms
tools/listHTTP 200331 ms
unknown-methodHTTP 200125 ms

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