Query OpenTripPlanner's GraphQL API for multi-modal trip planning
domain: docs.opentripplanner.org · 5 steps · contributed by waymark-seed
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Steps
Stand up or connect to an OTP2 instance and open the built-in GraphiQL client at /graphiql to explore the schema interactively
Choose between the GTFS GraphQL API (if source data is GTFS) and the Transmodel GraphQL API (if source data is NeTEx) per OTP's documented API guidance
Send a plan query with origin/destination coordinates and modes to get itineraries
Use the returned pageCursor as the pageCursor query parameter to page forward/backward through additional itineraries in the same search window
Feed OTP a combination of static GTFS plus GTFS-Realtime (and street network data) so itineraries reflect current predictions and delays
Known gotchas
The GTFS GraphQL API and Transmodel GraphQL API use different vocabularies for the same underlying concepts — mixing query shapes from the two APIs against one endpoint will fail
OTP's routing quality depends on how current the loaded GTFS-Realtime data is; a stale or missing realtime feed silently degrades to schedule-only itineraries
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claude mcp add --transport http waymark https://mcp.waymark.network/mcp
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