Content
# Bay Area Transit MCP Servers
Two Cloudflare Workers providing MCP (Model Context Protocol) access to BART and SF Muni real-time transit data. Works with Claude, ChatGPT, Poke, Cursor, and any MCP-compatible client.
**You don't need to deploy anything.** Just point your MCP client at the hosted endpoints below.
## Live Endpoints
- **BART**: `https://bart-mcp.srivastsh.workers.dev/mcp` — no auth, just connect
- **Muni**: `https://muni-mcp.srivastsh.workers.dev/mcp` — pass your free 511.org API key via `x-api-key-511` header
These run on Cloudflare Workers' free tier (100k requests/day). Since the Muni server uses BYOK auth, each user's 511 rate limit is isolated to their own key.
## Quick Start
### BART (no auth required)
Just add the URL to your MCP client. No API key needed.
### Muni (BYOK)
1. Get a free 511.org API key at https://511.org/open-data/token
2. Pass it via the `x-api-key-511` header in your MCP config
---
## Client Configuration
### Claude Desktop / Claude Code
```json
{
"mcpServers": {
"bart": {
"url": "https://bart-mcp.srivastsh.workers.dev/mcp"
},
"muni": {
"url": "https://muni-mcp.srivastsh.workers.dev/mcp",
"headers": {
"x-api-key-511": "YOUR_511_API_KEY"
}
}
}
}
```
### Poke
One-click setup: [BART recipe](https://poke.com/refer/vFEH7FR-kPn) | [Muni recipe](https://poke.com/r/rqHQjgDqSzT)
Or add manually as a remote MCP server:
- **URL**: `https://bart-mcp.srivastsh.workers.dev/mcp` or `https://muni-mcp.srivastsh.workers.dev/mcp`
- For Muni, set custom header `x-api-key-511` to your 511 key
### Cursor / Windsurf / stdio-only Clients
Use `mcp-remote` as a bridge:
```json
{
"mcpServers": {
"bart": {
"command": "npx",
"args": ["-y", "@anthropic-ai/mcp-remote", "https://bart-mcp.srivastsh.workers.dev/mcp"]
},
"muni": {
"command": "npx",
"args": [
"-y", "@anthropic-ai/mcp-remote",
"https://muni-mcp.srivastsh.workers.dev/mcp",
"--header", "x-api-key-511:YOUR_511_API_KEY"
]
}
}
}
```
---
## Available Tools
### BART (5 tools)
| Tool | Description |
|------|-------------|
| `bart_stations` | List all BART stations with codes |
| `bart_departures` | Real-time departures from a station |
| `bart_trip` | Plan a trip between two stations |
| `bart_advisories` | Current service advisories |
| `bart_fare` | Fare lookup between two stations |
### Muni (7 tools)
| Tool | Description |
|------|-------------|
| `transit_operators` | List all 511 transit operators |
| `muni_routes` | List all Muni routes |
| `muni_departures` | Real-time departures from a stop |
| `muni_line` | Line details with stops |
| `muni_alerts` | Current service alerts |
| `muni_vehicles` | Real-time vehicle GPS positions |
| `muni_schedule` | Timetable for a line |
---
## Deploy Your Own
Most users don't need to deploy — just use the hosted endpoints above. But if you want your own instance:
### Prerequisites
- Node.js 18+
- Cloudflare account (free tier works)
- `wrangler` CLI: `npm install -g wrangler`
### BART Worker
```bash
cd bart-mcp
npm install
wrangler login
wrangler deploy
```
The public BART demo key (`MW9S-E7SL-26DU-VV8V`) is baked into `wrangler.toml`. No secrets needed.
### Muni Worker
```bash
cd muni-mcp
npm install
wrangler deploy
```
Optionally set a fallback 511 key (used when no header key is provided):
```bash
wrangler secret put API_511_KEY
```
---
## Architecture
- **Runtime**: Cloudflare Workers (V8 isolates)
- **Transport**: `WebStandardStreamableHTTPServerTransport` (stateless, one server per request)
- **Auth**: BYOK via request headers, optional env secret fallback
- **Validation**: Zod schemas for all tool inputs
- **CORS**: Enabled for all origins
- **API Sources**: api.bart.gov (BART), api.511.org (Muni/511)
