Pumperly-MCP

A tiny bridge that exposes any Pumperly instance as an MCP server, enabling LLMs to query real-time fuel prices, find stations, plan routes, and geocode locations.

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What you get

Type	What for	MCP URI / Tool id
Resources	Browse configuration, statistics, and exchange rates read-only	pumperly://config pumperly://stats pumperly://exchange-rates
Tools	Find stations, calculate routes, and geocode locations	find_nearest_stations get_stations_in_area calculate_route find_route_stations geocode

Everything is exposed over a single JSON-RPC endpoint (/mcp). LLMs / Agents can: initialize -> readResource -> listTools -> callTool ... and so on.

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Quick-start (Docker Compose)

services:
  pumperly-mcp:
    image: drumsergio/pumperly-mcp:latest
    ports:
      - "127.0.0.1:8080:8080"
    environment:
      - PUMPERLY_URL=https://pumperly.com

Security note: The HTTP transport listens on 127.0.0.1:8080 by default. If you need to expose it on a network, place it behind a reverse proxy with authentication.

Install via npm (stdio transport)

npx pumperly-mcp

Or install globally:

npm install -g pumperly-mcp
pumperly-mcp

This downloads the pre-built Go binary from GitHub Releases for your platform and runs it with stdio transport. Requires at least one published release.

Local build

git clone https://github.com/GeiserX/pumperly-mcp
cd pumperly-mcp

# (optional) create .env from the sample
cp .env.example .env && $EDITOR .env

go run ./cmd/server

Configuration

Variable	Default	Description
PUMPERLY_URL	https://pumperly.com	Pumperly instance URL (without trailing /)
LISTEN_ADDR	127.0.0.1:8080	HTTP listen address (Docker sets 0.0.0.0:8080)
TRANSPORT	(empty = HTTP)	Set to stdio for stdio transport

Put them in a .env file (from .env.example) or set them in the environment.

Testing

Tested with Inspector and it is currently fully working. Before making a PR, make sure this MCP server behaves well via this medium.

Example configuration for client LLMs

{
  "schema_version": "v1",
  "name_for_human": "Pumperly-MCP",
  "name_for_model": "pumperly_mcp",
  "description_for_human": "Query real-time fuel prices, find stations, plan routes, and geocode locations via Pumperly.",
  "description_for_model": "Interact with a Pumperly instance that aggregates fuel station data. First call initialize, then reuse the returned session id in header \"Mcp-Session-Id\" for every other call. Use readResource to fetch URIs that begin with pumperly://. Use listTools to discover available actions and callTool to execute them.",
  "auth": { "type": "none" },
  "api": {
    "type": "jsonrpc-mcp",
    "url":  "http://localhost:8080/mcp",
    "init_method": "initialize",
    "session_header": "Mcp-Session-Id"
  },
  "logo_url": "https://pumperly.com/logo.png",
  "contact_email": "[email protected]",
  "legal_info_url": "https://github.com/GeiserX/pumperly-mcp/blob/main/LICENSE"
}

Credits

Pumperly -- real-time fuel price aggregation

MCP-GO -- modern MCP implementation

GoReleaser -- painless multi-arch releases

Maintainers

@GeiserX.

Contributing

Feel free to dive in! Open an issue or submit PRs.

Pumperly-MCP follows the Contributor Covenant Code of Conduct.