@open-mcp/us-national-weather-service

Installing

First set the environment variables as shell variables:

USER_AGENT='...'

Then use the OpenMCP config CLI to add the server to your MCP client:

Claude desktop

npx @open-mcp/config add us-national-weather-service \
  ~/Library/Application\ Support/Claude/claude_desktop_config.json \
  --USER_AGENT=$USER_AGENT

Cursor

Run this from the root of your project directory or, to add to all cursor projects, run it from your home directory ~.

npx @open-mcp/config add us-national-weather-service \
  .cursor/mcp.json \
  --USER_AGENT=$USER_AGENT

Other

npx @open-mcp/config add us-national-weather-service \
  /path/to/client/config.json \
  --USER_AGENT=$USER_AGENT

Manually

If you don't want to use the helper above, add the following to your MCP client config manually:

{
  "mcpServers": {
    "us-national-weather-service": {
      "command": "npx",
      "args": ["-y", "@open-mcp/us-national-weather-service"],
      "env": {"USER_AGENT":"..."}
    }
  }
}

Customizing the base URL

Set the environment variable OPEN_MCP_BASE_URL to override each tool's base URL. This is useful if your OpenAPI spec defines a relative server URL.

Other environment variables

• USER_AGENT

Inspector

Needs access to port 3000 for running a proxy server, will fail if http://localhost:3000 is already busy.

npx -y @modelcontextprotocol/inspector npx -y @open-mcp/us-national-weather-service

• Open http://localhost:5173
• Transport type: STDIO
• Command: npx
• Arguments: -y @open-mcp/us-national-weather-service
• Click Environment Variables to add
• Click Connect

It should say MCP Server running on stdio in red.

• Click List Tools

Tools

expandSchema

Expand the input schema for a tool before calling the tool

Input schema

• toolName (string)
• jsonPointers (array)

alerts_query

Environment variables

• USER_AGENT

Input schema

• active (boolean)
• start (string)
• end (string)
• status (array)
• message_type (array)
• event (array)
• code (array)
• area (array)
• point (string)
• region (array)
• region_type (string)
• zone (array)
• urgency (array)
• severity (array)
• certainty (array)
• limit (integer)
• cursor (string)

alerts_active

Environment variables

• USER_AGENT

Input schema

• status (array)
• message_type (array)
• event (array)
• code (array)
• area (array)
• point (string)
• region (array)
• region_type (string)
• zone (array)
• urgency (array)
• severity (array)
• certainty (array)
• limit (integer)

alerts_active_count

Environment variables

• USER_AGENT

Input schema

No input parameters

alerts_active_zone

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_alerts_active_zone_zoneid_

Environment variables

• USER_AGENT

Input schema

No input parameters

alerts_active_area

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_alerts_active_area_area_

Environment variables

• USER_AGENT

Input schema

No input parameters

alerts_active_region

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_alerts_active_region_region_

Environment variables

• USER_AGENT

Input schema

No input parameters

alerts_types

Environment variables

• USER_AGENT

Input schema

No input parameters

alerts_single

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_alerts_id_

Environment variables

• USER_AGENT

Input schema

No input parameters

cwsu

Environment variables

• USER_AGENT

Input schema

• cwsuId (string)

cwas

Environment variables

• USER_AGENT

Input schema

• cwsuId (string)

cwa

Environment variables

• USER_AGENT

Input schema

• cwsuId (string)
• date (string)
• sequence (integer)

sigmetquery

Environment variables

• USER_AGENT

Input schema

• start (string)
• end (string)
• date (string)
• atsu (string)
• sequence (string)

sigmetsbyatsu

Environment variables

• USER_AGENT

Input schema

• atsu (string)

sigmetsbyatsubydate

Environment variables

• USER_AGENT

Input schema

• atsu (string)
• date (string)

sigmet

Environment variables

• USER_AGENT

Input schema

• atsu (string)
• date (string)
• time (string)

glossary

Environment variables

• USER_AGENT

Input schema

No input parameters

gridpoint

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_gridpoints_wfo_x_y_

Environment variables

• USER_AGENT

Input schema

No input parameters

gridpoint_forecast

Environment variables

• USER_AGENT

Input schema

• units (string)
• Feature-Flags (array)

parameters_gridpoints_wfo_x_y_forecast

Environment variables

• USER_AGENT

Input schema

No input parameters

gridpoint_forecast_hourly

Environment variables

• USER_AGENT

Input schema

• units (string)
• Feature-Flags (array)

parameters_gridpoints_wfo_x_y_forecast_hourly

Environment variables

• USER_AGENT

Input schema

No input parameters

gridpoint_stations

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_gridpoints_wfo_x_y_stations

Environment variables

• USER_AGENT

Input schema

No input parameters

icons

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_icons_set_timeofday_first_

Environment variables

• USER_AGENT

Input schema

No input parameters

iconsdualcondition

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_icons_set_timeofday_first_second_

Environment variables

• USER_AGENT

Input schema

No input parameters

icons_summary

Environment variables

• USER_AGENT

Input schema

No input parameters

satellite_thumbnails

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_thumbnails_satellite_area_

Environment variables

• USER_AGENT

Input schema

No input parameters

station_observation_list

Environment variables

• USER_AGENT

Input schema

• start (string)
• end (string)
• limit (integer)

parameters_stations_stationid_observations

Environment variables

• USER_AGENT

Input schema

No input parameters

station_observation_latest

Environment variables

• USER_AGENT

Input schema

• require_qc (boolean)

parameters_stations_stationid_observations_latest

Environment variables

• USER_AGENT

Input schema

No input parameters

station_observation_time

Environment variables

• USER_AGENT

Input schema

• time (string)

parameters_stations_stationid_observations_time_

Environment variables

• USER_AGENT

Input schema

No input parameters

tafs

Environment variables

• USER_AGENT

Input schema

• stationId (string)

taf

Environment variables

• USER_AGENT

Input schema

• stationId (string)
• date (string)
• time (string)

obs_stations

Environment variables

• USER_AGENT

Input schema

• id (array)
• state (array)
• limit (integer)
• cursor (string)

obs_station

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_stations_stationid_

Environment variables

• USER_AGENT

Input schema

No input parameters

office

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_offices_officeid_

Environment variables

• USER_AGENT

Input schema

No input parameters

office_headline

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_offices_officeid_headlines_headlineid_

Environment variables

• USER_AGENT

Input schema

No input parameters

office_headlines

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_offices_officeid_headlines

Environment variables

• USER_AGENT

Input schema

No input parameters

point

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_points_point_

Environment variables

• USER_AGENT

Input schema

No input parameters

point_stations

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_points_point_stations

Environment variables

• USER_AGENT

Input schema

No input parameters

radar_servers

Environment variables

• USER_AGENT

Input schema

• reportingHost (string)

radar_server

Environment variables

• USER_AGENT

Input schema

• reportingHost (string)

parameters_radar_servers_id_

Environment variables

• USER_AGENT

Input schema

No input parameters

radar_stations

Environment variables

• USER_AGENT

Input schema

• stationType (array)
• reportingHost (string)
• host (string)

radar_station

Environment variables

• USER_AGENT

Input schema

• reportingHost (string)
• host (string)

parameters_radar_stations_stationid_

Environment variables

• USER_AGENT

Input schema

No input parameters

radar_station_alarms

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_radar_stations_stationid_alarms

Environment variables

• USER_AGENT

Input schema

No input parameters

radar_queue

Environment variables

• USER_AGENT

Input schema

• limit (integer)
• arrived (other)
• created (other)
• published (other)
• station (string)
• type (string)
• feed (string)
• resolution (integer)

parameters_radar_queues_host_

Environment variables

• USER_AGENT

Input schema

No input parameters

radar_profiler

Environment variables

• USER_AGENT

Input schema

• time (other)
• interval (string)

parameters_radar_profilers_stationid_

Environment variables

• USER_AGENT

Input schema

No input parameters

products_query

Environment variables

• USER_AGENT

Input schema

• location (array)
• start (string)
• end (string)
• office (array)
• wmoid (array)
• type (array)
• limit (integer)

product_locations

Environment variables

• USER_AGENT

Input schema

No input parameters

product_types

Environment variables

• USER_AGENT

Input schema

No input parameters

product

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_products_productid_

Environment variables

• USER_AGENT

Input schema

No input parameters

products_type

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_products_types_typeid_

Environment variables

• USER_AGENT

Input schema

No input parameters

products_type_locations

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_products_types_typeid_locations

Environment variables

• USER_AGENT

Input schema

No input parameters

location_products

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_products_locations_locationid_types

Environment variables

• USER_AGENT

Input schema

No input parameters

products_type_location

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_products_types_typeid_locations_locationid_

Environment variables

• USER_AGENT

Input schema

No input parameters

zone_list

Environment variables

• USER_AGENT

Input schema

• id (array)
• area (array)
• region (array)
• type (array)
• point (string)
• include_geometry (boolean)
• limit (integer)
• effective (string)

zone_list_type

Environment variables

• USER_AGENT

Input schema

• id (array)
• area (array)
• region (array)
• type (array)
• point (string)
• include_geometry (boolean)
• limit (integer)
• effective (string)

parameters_zones_type_

Environment variables

• USER_AGENT

Input schema

No input parameters

zone

Environment variables

• USER_AGENT

Input schema

• effective (string)

parameters_zones_type_zoneid_

Environment variables

• USER_AGENT

Input schema

No input parameters

zone_forecast

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_zones_type_zoneid_forecast

Environment variables

• USER_AGENT

Input schema

No input parameters

zone_obs

Environment variables

• USER_AGENT

Input schema

• start (string)
• end (string)
• limit (integer)

parameters_zones_forecast_zoneid_observations

Environment variables

• USER_AGENT

Input schema

No input parameters

zone_stations

Environment variables

• USER_AGENT

Input schema

No input parameters

parameters_zones_forecast_zoneid_stations

Environment variables

• USER_AGENT

Input schema

No input parameters