{"entry":{"slug":"matrix-client-api","name":"Matrix Client-Server API","category":"api","summary":"Send and read messages on any Matrix homeserver over an open federated protocol.","description":"","auth_mode":"Bearer access token","endpoint":"https://matrix.org/_matrix/client/v3/rooms/<roomId>/send/m.room.message","docs_url":"https://spec.matrix.org/latest/client-server-api/","tags":["chat","messaging"],"capabilities":["send chat message","read chat room","team chat"],"auth_params":[{"name":"Authorization","location":"header","required":true}],"input_format":"application/json","output_format":"application/json","rate_limit":"Homeserver dependent","pricing":"Free, open protocol","invocation_example":"","verified":false,"verified_at":null,"featured":false,"checks_total":2,"checks_ok":2,"avg_latency_ms":312,"reports_count":0,"health_ok":true,"health_status_code":200,"health_checked_at":"2026-09-22T10:04:56.752+00:00","health_latency_ms":344,"probe_url":null}}