transit_feeds

Which published timetables this instance carries, and which others it could — with the size of each, so an operator can see what switching one on costs. Also names the feeds that look right but whose timetables have run out

Free. This one only touches this instance's own storage, so there is nothing to charge for.

Runs on Transit — Public transport: stops near you, what is due, and which lines are down.

Arguments

Calling it

Three doors onto the same method. MCP is what an agent speaks, REST is what a program speaks, and the answer is identical.

{"id":1,"jsonrpc":"2.0","method":"tools/call","params":{"arguments":{},"name":"transit_feeds"}}

Try it in the playground.