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WeatherMCP serverFirst audited Nov 13, 2026

io.github.cyanheads/noaa-climate-mcp-server

Search NOAA climate stations and datasets, fetch historical weather observations.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 355 ms.
Sign-up?
None neededIt answered without any account or key.
Can it change things?
No, read-onlyAll 11 tools say they only read.
Endpointhttps://noaa-climate.caseyjhand.com/mcp

Source code Streamable HTTP · protocol 2025-11-25 · server version 0.9.0

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

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

Tools

  • Passed: 11 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 (11)

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

  • noaa_climate_list_datasetsList available NOAA CDO datasets with their IDs, names, and temporal coverage. Returns all ~11 datasets by default (no required parameters). Optionally filter to datasets that contain a specific data…Read-only
  • noaa_climate_list_data_categoriesList data categories that group related data types — Temperature, Precipitation, Wind, Pressure, Sunshine, Sky cover, Weather Type, and more. Use to discover what types of measurements are available…Read-only
  • noaa_climate_list_data_typesList available data types (measurement labels like TMAX, TMIN, PRCP, SNOW) for a given dataset or category. Pass a datasetId to see what is measured in that dataset, or a datacategoryId (e.g., "TEMP"…Read-only
  • noaa_climate_list_location_categoriesList the location categories that scope noaa_climate_find_locations — CITY, CLIM_DIV, CLIM_REG, CNTRY, CNTY, HYD_ACC, HYD_CAT, HYD_REG, HYD_SUB, ST, US_TERR, and ZIP. Call this first when you do not…Read-only
  • noaa_climate_find_locationsSearch for geographic locations by category (CITY, ST, CNTY, CNTRY, ZIP, CLIM_REG, etc.). Returns location IDs used in station search and data queries. Without locationCategoryId, returns all locatio…Read-only
  • noaa_climate_find_stationsSearch for weather observation stations by location, bounding box, dataset, and data type. Returns station IDs, names, coordinates, elevation, and data coverage dates. Filter by locationId (e.g., "FI…Read-only
  • noaa_climate_get_stationFetch full metadata for a single weather station by its ID (e.g., "GHCND:USW00024233", "COOP:010008"). Returns name, coordinates, elevation, and the full date range for which data is available. Use w…Read-only
  • noaa_climate_fetch_dataFetch historical observation records from a NOAA CDO dataset for a given date range. Requires datasetId, startDate, and endDate; optionally filter stations, locations, and datatypes. The encoded quer…Read-only
  • noaa_climate_get_normalsFetch one station's 1991–2020 U.S. Climate Normals, NOAA's current 30-year baseline, for comparing an observed day, month, season, or year against normal. Covers monthly, daily, hourly, and annual/se…Read-only
  • noaa_climate_search_storm_eventsSearch the NCEI Storm Events Database for one calendar year — tornadoes, hail, floods, hurricanes, winter storms, heat, and every other NWS Storm Data event type, with magnitude, direct and indirect…Read-only
  • noaa_climate_get_billion_dollar_disastersQuery NOAA/NCEI’s retired Billion-Dollar Weather and Climate Disasters archive (1980–2024), with CPI-adjusted and unadjusted costs and deaths. No years after 2024 are added; CPI adjustments are prese…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 200355 ms
initializedHTTP 202270 ms
tools/listHTTP 200172 ms
resources/listHTTP 200106 ms
prompts/listHTTP 200110 ms
unknown-methodHTTP 200102 ms

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