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Fair meeting point discovery for AI agents with isochrone-based travel time fairness
About
Fair meeting point discovery for AI agents with isochrone-based travel time fairness
Security Report
Valid MCP server (2 strong, 3 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry. Trust signals: trusted author (4/4 approved).
12 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: VALHALLA_URL
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"dev-forgesworn-rendezvous-mcp": {
"env": {
"VALHALLA_URL": "your-valhalla-url-here"
},
"args": [
"-y",
"rendezvous-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
rendezvous-mcp
Nostr: npub1mgvlrnf5hm9yf0n5mf9nqmvarhvxkc6remu5ec3vf8r0txqkuk7su0e7q2
Fair meeting points for AI — isochrone-based fairness, not naive midpoints.
MCP server for AI-driven meeting point discovery. Give your AI the ability to answer "where should we meet?" using real travel times, venue availability, and fairness algorithms.
Works out of the box — free public routing, no API keys needed. Self-host Valhalla for unlimited queries, or use L402 Lightning credits for our hosted endpoint.
Tools
| Tool | Description |
|---|---|
score-venues | Score candidate venues by travel time fairness for 2–10 participants |
search-venues | Search for venues near a location using OpenStreetMap |
get-isochrone | Get a reachability polygon (everywhere reachable within N minutes) |
get-directions | Get directions between two points with turn-by-turn steps |
store-routing-credentials | Store L402 macaroon + preimage after Lightning payment |
Quick start
Add to your MCP client config (Claude Code, Claude Desktop, Cursor, etc.):
{
"mcpServers": {
"rendezvous": {
"command": "npx",
"args": ["rendezvous-mcp"]
}
}
}
Then ask your AI: "Where's a fair place for Alice in London, Bob in Bristol, and Carol in Birmingham to meet for lunch?"
Remote (HTTP/SSE)
For ChatGPT, remote AI agents, or any client that connects over HTTP:
TRANSPORT=http npx rendezvous-mcp
Starts a Streamable HTTP server on port 3002 with the MCP endpoint at /mcp.
ChatGPT connector
In ChatGPT settings, add an MCP server with:
- URL:
http://your-host:3002/mcp - Transport: Streamable HTTP
Configuration
| Variable | Default | Description |
|---|---|---|
TRANSPORT | stdio | Transport mode: stdio or http |
PORT | 3002 | HTTP server port (HTTP mode only) |
HOST | 0.0.0.0 | HTTP bind address (HTTP mode only) |
VALHALLA_URL | https://routing.trotters.cc | Routing engine URL |
OVERPASS_URL | Public endpoints | Venue search API |
Self-hosted routing
For unlimited queries with no rate limits, run your own Valhalla instance:
{
"mcpServers": {
"rendezvous": {
"command": "npx",
"args": ["rendezvous-mcp"],
"env": {
"VALHALLA_URL": "http://localhost:8002"
}
}
}
}
How it works
- User asks "Where should we meet?"
- AI geocodes participant locations
- AI calls
search-venuesto find candidate venues near the area - AI calls
score-venueswith participants + candidates — returns ranked results with travel times and fairness scores - AI presents the fairest option with travel times for each person
For deeper analysis, the AI can use get-isochrone to visualise reachability and get-directions for turn-by-turn navigation.
L402 payments
The default routing endpoint (routing.trotters.cc) offers free requests. When the free tier is exhausted, tools return a payment_required response with a Lightning invoice. After payment, call store-routing-credentials to store the macaroon for the session.
Self-hosted Valhalla has no payment requirement.
Architecture
Thin MCP wrapper over rendezvous-kit — the open-source TypeScript library for isochrone intersection, venue search, and fairness scoring. Each tool is an extracted handler function (testable without MCP) plus a registration one-liner.
Development
npm install
npm run build
npm test
Licence
Support
For issues and feature requests, see GitHub Issues.
If you find rendezvous-mcp useful, consider sending a tip:
- Lightning:
profusemeat89@walletofsatoshi.com - Nostr zaps:
npub1mgvlrnf5hm9yf0n5mf9nqmvarhvxkc6remu5ec3vf8r0txqkuk7su0e7q2
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