Summary
Wraps the OpenStreetMap Nominatim geocoding API so you can search addresses, reverse geocode coordinates, and query map data without leaving your MCP client. No API keys required since it uses OpenStreetMap's free public service. Part of the Pipeworx gateway ecosystem, which means you can either connect to this Nominatim endpoint directly or get it bundled with 673+ other data sources through their unified gateway. The ask_pipeworx tool lets you query in plain English instead of calling specific endpoints. Useful when you need location lookups or address validation in your agent workflows without managing another API account.
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one prompt install →mcp-nominatim
Nominatim MCP — wraps OpenStreetMap Nominatim geocoding API (free, no auth)
Part of Pipeworx — an MCP gateway connecting AI agents to 1476+ live data sources.
Tools
| Tool | Description |
|---|---|
search_address | Search for coordinates of an address or place name. Returns latitude, longitude, display name, and place type for matched locations. |
reverse_geocode | Convert latitude/longitude coordinates to a human-readable address. Returns nearest address, place name, and administrative boundaries. |
lookup | Get details for OpenStreetMap locations by ID (e.g., "N123456" for node, "W654321" for way, "R111" for relation). Returns coordinates, names, and metadata. |
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"nominatim": {
"url": "https://gateway.pipeworx.io/nominatim/mcp"
}
}
}
What this endpoint actually serves
tools/list at https://gateway.pipeworx.io/nominatim/mcp returns the tools in the table
above plus the shared Pipeworx meta-tools — ask_pipeworx,
discover_tools, search_within, remember/recall and the rest of the
gateway-wide set. So the tool count you see is larger than this table: a
single-pack endpoint currently lists roughly 30 shared tools alongside the
pack's own. The connection's initialize response states its exact scope, and
is the authoritative answer for a given day.
This is deliberate, not multiplexing by accident. The meta-tools are what let a
scoped connection answer a question this pack does not cover — via
ask_pipeworx, which routes across the whole catalog — without you adding a
second MCP server. There is currently no way to mount a pack endpoint without
them; if the extra schemas cost you more context than the routing is worth,
connect to the full gateway once rather than to several pack endpoints.
Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}
Both URLs reach the same gateway and the same 1476+ data sources. The
only difference is which pack's tools are listed directly; ask_pipeworx
reaches all of them from either one.
Using with ask_pipeworx
Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:
ask_pipeworx({ question: "your question about Nominatim data" })
The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →