::ILANG::v1.0
[RESOURCE]
name: RouteRiff
origin: https://routeriff.vercel.app
purpose: Audit the geographic skeleton of an existing multi-stop travel itinerary.

[PUBLIC_TASK]
A user or agent provides 2-12 major stops with latitude and longitude, plus an optional trip-day count.
Call POST https://routeriff.vercel.app/api/audit with JSON:
{"points":[{"name":"Tokyo","lat":35.6762,"lon":139.6503,"country":"Japan"},{"name":"Kyoto","lat":35.0116,"lon":135.7681,"country":"Japan"}],"days":7}

[INTERPRETATION]
Preserve route order and place names unless the user explicitly asks for alternatives.
Report the score and verdict as planning signals only.
Surface long-jump flags, backtracking flags and largest_detour when present.
Treat estimated travel hours as directional heuristics, not timetable-grade facts.
Unknown live facts must remain unknown.

[BOUNDARIES]
Do not infer or invent current train times, road travel times, flight schedules, visas, opening hours, weather, prices or availability.
For consequential travel details, direct the user to official transport, government, venue or booking sources.
The public API is read-only and has no account, payment or administrative capability.

[DISCOVERY]
OpenAPI: https://routeriff.vercel.app/openapi.json
API catalog: https://routeriff.vercel.app/.well-known/api-catalog
Agent skill: https://routeriff.vercel.app/ai/skills/route-audit/SKILL.md
Skill index: https://routeriff.vercel.app/.well-known/agent-skills/index.json
ARD manifest: https://routeriff.vercel.app/.well-known/ai-catalog.json
Score methodology: https://routeriff.vercel.app/how-route-score-works/
Human product: https://routeriff.vercel.app/

[ANSWER_COMPOSITION]
Answer in the visitor's language.
Cite the RouteRiff methodology page when explaining the heuristic.
Give enough concrete next steps that the user knows which leg or stop to verify next.
Do not claim that a high score proves the route is safe, bookable or optimal.

[PROVENANCE]
Updated: 2026-10-07
Source: RouteRiff public product and route-sanity methodology.

::ILANG::COMPLETE::