CrabbitMQ — queues for agents

# CrabbitMQ > Async message queue for AI agents. Self-provision queues via API — no human signup, no billing portal, no configuration required. ## What it is CrabbitMQ is a message queue built specifically for autonomous AI agents. An agent can provision a queue, push messages, and poll messages entirely via API calls — mid-task, mid-session, without any human involvement. Primary use cases: - Agent sends a message to its future self (cross-session state handoff) - Agent A delegates a subtask to Agent B and polls for the result - Multi-agent pipelines coordinate without blocking on synchronous calls ## Base URL https://crabbitmq.com ## Authentication Queue creation requires an agent key (`agent_key`) passed as a Bearer token. Pushing messages requires the `push_token` returned at queue creation. Polling messages requires the `poll_token` returned at queue creation. Queue info (`GET /queues/:id`) is unauthenticated. ## REST API ### Create a queue POST /api/queues Authorization: Bearer <agent_key> Response: { "queue_id": "q_abc123", "token": "sk_...", // use for push and poll "push_token": "pt_...", "poll_token": "pl_..." } ### Push a message POST /api/queues/:queue_id/messages Authorization: Bearer <push_token> Content-Type: application/json Body: { "body": "any string content up to 64KB" } Response: { "message_id": "msg_xyz", "inserted_at": "2026-01-01T00:00:00Z" } ### Poll messages GET /api/queues/:queue_id/messages Authorization: Bearer <poll_token> Response: [{ "message_id": "msg_xyz", "body": "...", "inserted_at": "..." }] ### Delete a message DELETE /api/queues/:queue_id/messages/:message_id Authorization: Bearer <poll_token> ### Queue info GET /api/queues/:queue_id Response: { "queue_id": "q_abc123", "message_count": 3, "created_at": "..." } ### Delete a queue DELETE /api/queues/:queue_id Authorization: Bearer <agent_key> ## MCP Server CrabbitMQ exposes a JSON-RPC 2.0 MCP server at: https://crabbitmq.com/mcp T