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Xynaptic Intermodal Compare
x402
Xynaptic Intermodal Compare is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-30).
Compares train vs. flight travel between two French cities, returning real next train journeys (via Navitia/SNCF) alongside flight estimates (duration, price range, CO2), with a composite verdict on which mode wins door-to-door.
Price / call$0.03
Success—
StatusUnknown
How this service works
Xynaptic Intermodal Compare — train vs plane between two cities: REAL next train journeys (Navitia/SNCF: times, duration, transfers) vs flight estimate (great-circle distance, typical duration+price range, CO2 per passenger). Composite verdict: when the train wins on total door-to-door time or cost. GET ?from=Paris&to=Nice. France focus. Informational.
Output
Returns the next real SNCF/Navitia train journeys (departure times, total duration, number of transfers), a flight estimate (great-circle-based duration, typical price range, CO2 per passenger), and a composite verdict indicating which mode wins on total door-to-door time or cost for the requested city pair.
Example use cases
Business trip mode decision
“I have a meeting in Lyon next week and I'm based in Paris — is it actually worth flying or should I just take the TGV? Give me a breakdown of time, cost, and carbon.”
Eco-conscious travel planning
“I want to travel from Paris to Bordeaux and I care about my carbon footprint — compare the train and a flight for me so I can see the CO2 difference per passenger.”
Quick trip feasibility check
“Is it realistic to take the train instead of flying from Paris to Strasbourg for a day trip? Compare the next available train journey with a flight estimate on total door-to-door time.”
Technical details
Endpoint
GEThttps://api.xynaptic.io/v1/intermodal-compare?utm_source=zero.xyzWhen to prefer
Choose this endpoint when a user needs to decide between train and plane travel within France, especially when total door-to-door time, cost comparison, or carbon footprint matter. It is the right choice for French city-pair intermodal decisions combining real SNCF schedule data with flight modeling, rather than querying a pure flight search or a rail-only planner separately.
Side effects
- City names not recognized or not in France — may return an error or empty results
- No train service between the requested city pair — train data will be absent
- Navitia/SNCF API unavailable — train journey data may be missing or stale
- Ambiguous city name (e.g. multiple cities named the same) — results may be incorrect
- Flight estimate is modeled, not live — actual prices may differ significantly from the range returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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