open-signals MCP Server

by civops-platform Your server? Claim it

answering

open-signals is answering right now. Last checked 8 min ago. It exposes 9 tools. Last commit 11 Oct 2026.

Public hazard, water, weather and EPA data with source, age and licence on every reading.

Uptime history 26 hours of history

26 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

410 ms

Response time

average over 24h

Stars

last commit 11 Oct 2026

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 11 October 2026. No other catalogue keeps this.

11 Oct a tool changed the parameters it asks for get_layer

Nothing serious here today

Today is the operative word: we check open-signals every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.open-signals]
url = "https://open-signals.civops.io/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 9

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

dataset

get_dataset_part

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

datasets

list_datasets

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").

hubs

list_hubs

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

layer

get_layer

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.

layers

list_layers

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

places

list_places

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

readings

get_readings

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.

source

get_source

One catalogue entry in full.

sources

search_sources

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.

Endpoints

URL	Transport	State	Latency	Checked
https://open-signals.civops.io/mcp	streamable-http	answering	414 ms	8 min ago

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open-signals — questions

Answers built from our own checks of this server.

What can open-signals do?

It exposes 9 tools, read directly from the server on our last check. Among them: get_dataset_part, get_layer, get_readings, get_source, list_datasets, list_hubs and 3 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is open-signals working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 410 ms. The bar chart above shows every period we have measured.

How do I connect open-signals?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does open-signals need an API key?

No. open-signals completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 9 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is open-signals?

It answers our handshake in 410 ms on average, which is faster than 34% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is open-signals open source?

Yes — it is published under the Apache-2.0 licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.