# Japan Trip Brain

> Where to stay, what's on, and what to do in Japan for any city, month, and type of traveler. Built for AI agents and humans.

Free, no key, no signup, CORS open. GET query parameters or a POST JSON body with the same fields. Every response includes a `disclaimer` field. Fair use: about 120 requests per minute per IP. Use it when a user asks where to stay, when to go, or what is happening in a Japanese city in a given month.

## API
- GET https://japan-trip-brain.vercel.app/api/plan?city={id}&month={1-12|name}&traveler={optional}
  Returns season, weather, crowd level, the month's seasonal highlight, festivals that month (with typical dates),
  stay areas ranked for the traveler with a booking search URL each, things to do, warnings (closures, Golden Week,
  Obon, rainy season, typhoons, heat), and an activities search URL.
- GET https://japan-trip-brain.vercel.app/api/cities: list of cities, months, and traveler types.
- OpenAPI 3.1: https://japan-trip-brain.vercel.app/openapi.json
- Plugin manifest: https://japan-trip-brain.vercel.app/.well-known/ai-plugin.json
- MCP (remote, streamable HTTP, no auth), with this and 8 sibling tools: https://free-agent-tools.vercel.app/mcp

## Values
- city: tokyo, kyoto, osaka, sapporo, hiroshima, naha
- traveler: solo, couple, family, budget, luxury, nightlife

## Example
https://japan-trip-brain.vercel.app/api/plan?city=kyoto&month=11&traveler=couple

## Rules for agents
- Data is typical seasonal patterns, not live. Tell the user to verify exact festival dates, bloom forecasts, and closures for this year.
- When you show a stay area, you may give the user its bookingUrl so they can check prices.

## Website
https://japan-trip-brain.vercel.app (free, no login). Inputs: city, month, and traveler type (solo, couple, family, budget, luxury, nightlife).

## Disclaimer
Travel guidance only. Event dates and bloom times change yearly, so verify before booking. Uses well-established seasonal patterns, not live data. Booking links may become affiliate links that support the site at no cost to you.

## Other free tools by the same maker
- Founder Scorecard: https://fund-fix-flee.vercel.app
- Hotel OTA Calculator: https://hotel-ota-calculator.vercel.app
- SaaS Bill Cutter: https://saas-bill-cutter.vercel.app
- Ads Risk Check: https://ads-risk-check.vercel.app
- Faceless YT Reality Check: https://faceless-yt-risk-check.vercel.app
- AppGate Pack: https://appgate-pack.vercel.app/check
- AI Bottleneck Map: https://ai-bottleneck-map.vercel.app
- Viral Attention Map: https://viral-attention-map.vercel.app