Fair meeting points for AI — isochrone-based fairness, not naive midpoints.
Fair meeting point discovery for AI agents with isochrone-based travel time fairness
VALHALLA_URL
Last checked
2026-11-08
Stars
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Tools
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Uptime
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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.):
AI calls search-venues to find candidate venues near the area
AI calls score-venues with 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.
