trimet-llms.txt

# TriMet API Guide

Get an API key APP_ID: https://developer.trimet.org/appid/registration/

## Core Methods

### Get Arrivals by Stop ID
```javascript
// Returns arrivals for a specific stop
fetch(`https://developer.trimet.org/ws/V1/arrivals?locIDs=${stopId}&appID=${APP_ID}&json=true`)
  .then(response => response.json())
```

### Get Route Information
```javascript
// Returns details for specific route(s)
fetch(`https://developer.trimet.org/ws/V1/routeConfig?routes=${routeId}&appID=${APP_ID}&json=true`)
  .then(response => response.json())
```

### Find Stops by Location
```javascript
// Returns stops near coordinates (lat,lon)
fetch(`https://developer.trimet.org/ws/V1/stops?ll=${lat},${lon}&meters=500&appID=${APP_ID}&json=true`)
  .then(response => response.json())
```

All endpoints support CORS with `Access-Control-Allow-Origin: *`