Build on Drum. Your systems. Your AI agents.

Connect your own systems with the REST API and webhooks, or bring Drum into Claude, ChatGPT and other AI assistants with the MCP server.

Make your first API request Open Drum

Start here

Choose what you're building

REST API

Read and write projects, time, costs and invoices from your own systems.

Open the API docs

Webhooks

Get a signed request at your own endpoint when projects, invoices and costs change in Drum.

Open the webhook docs

MCP server

Connect Claude, ChatGPT and other AI assistants to Drum, and build agents on Drum's tools.

Open the MCP docs

Each area has its own tutorials, how-to guides, reference and explanation. To browse one type across every area, open Tutorials, How-to guides, Reference or Explanation.