open-signals MCP Server

Install open-signals MCP server

claude mcp add --transport http open-signals https://open-signals.civops.io/mcp

{
  "mcpServers": {
    "open-signals": {
      "url": "https://open-signals.civops.io/mcp"
    }
  }
}

{
  "mcpServers": {
    "open-signals": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://open-signals.civops.io/mcp"
      ]
    }
  }
}

{
  "servers": {
    "open-signals": {
      "type": "http",
      "url": "https://open-signals.civops.io/mcp"
    }
  }
}

{
  "mcpServers": {
    "open-signals": {
      "serverUrl": "https://open-signals.civops.io/mcp"
    }
  }
}

Context tax

Connecting this server adds ~1,617 tokens of tool definitions to every model turn (moderate, 9 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (9)

• get_layer572 tok

  One map layer as a GeoJSON FeatureCollection: one point per place with the reading on the date (else the latest observed before it, never a guess), or one point per event for event layers.

• get_readings487 tok

  Fetch current readings from one source, each with value, unit, a one-line summary, place and provenance (source, URL, fetch time, licence). Sources this server will not republish (non-commercial, restricted or unreviewed licence) answer with an error naming the licence.

• search_sources173 tok

  Search the catalogue of public data sources (weather, water, hazards, flights, ships, energy, filings, trade, ...). Each entry gives the API, coverage, cadence, auth needed and licence. Use it to find where a kind of data comes from before writing a fetcher.

• get_dataset_part85 tok

  The URL of one part of a dataset as GeoJSON, plus its description. Fetch the URL for the features; parts can be several megabytes.

• list_datasets71 tok

  Static public datasets this server holds as GeoJSON (wildfire burn perimeters, public-land share by county, federal campgrounds, fire-weather stations), with source, licence, feature count and parts (one per state, or "all").

• list_hubs54 tok

  Projects and catalogues that collect sources (God's Eye View, World Monitor, the MCP Registry, Source Cooperative, ...), with how each relates to this one.

• list_places53 tok

  Named places the fetchers read for, with their upstream ids (CO-OPS station, USGS gauge, eBird region) and tags.

• list_layers49 tok

  Map layers this server can draw as GeoJSON, with unit, source, licence, whether it is available here, and how to read it.

• get_source35 tok

  One catalogue entry in full.

Security signals

100/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules

Freshness

Active — last maintenance signal 3d ago. The newest of the signals below sets the band.

1. Last commit (default branch)

   2026-10-15 · 3d ago · GitHub

2. Latest release

   no data · GitHub

3. Package published

   no data · npm/PyPI

4. Registry entry updated

   2026-10-10 · 8d ago · official registry · v0.1.0

How it compares in Maps & Location

Against the most-starred maps & location servers we index. Token cost is per model turn, measured from each server's live tool list.