{"tools":[{"name":"get_vehicles_near","description":"Get real-time transit vehicle positions near a location. Returns buses, trains, ferries within a radius. Costs $0.001 USDC per query via x402.","inputSchema":{"type":"object","properties":{"lat":{"type":"number","description":"Latitude"},"lon":{"type":"number","description":"Longitude"},"radius_km":{"type":"number","description":"Search radius in km (default 2)","default":2},"limit":{"type":"integer","description":"Max results (default 50, max 200)","default":50}},"required":["lat","lon"]}},{"name":"get_alerts","description":"Get active transit service alerts and disruptions. Filter by feed or route. Costs $0.001 USDC per query via x402.","inputSchema":{"type":"object","properties":{"feed":{"type":"string","description":"Feed ID (e.g. mbta, mta-ace, septa)"},"route":{"type":"string","description":"Route ID to filter alerts"},"limit":{"type":"integer","description":"Max results","default":50}}}},{"name":"get_predictions","description":"Get arrival/departure predictions for a stop or route. Costs $0.001 USDC per query via x402.","inputSchema":{"type":"object","properties":{"feed":{"type":"string","description":"Feed ID"},"stop":{"type":"string","description":"Stop ID"},"route":{"type":"string","description":"Route ID"},"limit":{"type":"integer","description":"Max results","default":20}}}},{"name":"search_stops","description":"Search transit stops/stations by name or location. Costs $0.001 USDC per query via x402.","inputSchema":{"type":"object","properties":{"q":{"type":"string","description":"Search by stop name"},"lat":{"type":"number","description":"Latitude for proximity search"},"lon":{"type":"number","description":"Longitude for proximity search"},"radius_km":{"type":"number","description":"Search radius in km","default":50},"limit":{"type":"integer","description":"Max results","default":20}}}},{"name":"stream_vehicles","description":"SSE stream of real-time vehicle positions near a location. Free (rate limited).","inputSchema":{"type":"object","properties":{"lat":{"type":"number","description":"Latitude"},"lon":{"type":"number","description":"Longitude"},"radius_km":{"type":"number","description":"Search radius in km","default":2},"interval":{"type":"integer","description":"Update interval in seconds (5-60)","default":15}},"required":["lat","lon"]}},{"name":"list_feeds","description":"List all available transit data feeds and their status. Free, no payment required.","inputSchema":{"type":"object","properties":{}}},{"name":"get_stats","description":"Get current database statistics. Free, no payment required.","inputSchema":{"type":"object","properties":{}}}],"payment":{"protocol":"x402","network":"eip155:8453","facilitator":"https://facilitator.openx402.ai","price_per_query":"$0.001","free_endpoints":["/health","/api/stats","/api/feeds","/mcp/tools"]}}