CoJam

https://github.com/am1ree/cojam About the project (CoJam) CoJam is a collaboration-first music editor built for artists who want to create together — with other humans and AI agents — in the same shared workspace. What we built CoJam combines a real-time music editor with AI-powered creation tools: Real-time collaboration (Figma-style) Live “presence” with a cursor that shows where teammates are working Shared timeline/arrangement so everyone sees changes as they happen Real-time collaboration (Figma-style) Live “presence” with a cursor that shows where teammates are working Shared timeline/arrangement so everyone sees changes as they happen AI agent (Claude SDK + tool access) We built an AI agent using the Claude SDK The agent can take real actions inside CoJam (not just chat) We expose an MCP server that gives the agent access to CoJam’s tools (ex: search/import audio, add clips, edit the timeline, add MIDI notes) AI agent (Claude SDK + tool access) We built an AI agent using the Claude SDK The agent can take real actions inside CoJam (not just chat) We expose an MCP server that gives the agent access to CoJam’s tools (ex: search/import audio, add clips, edit the timeline, add MIDI notes) Music generation (Suno) Integrated Suno to generate musical ideas quickly (drums, melodies, vocals, etc.) Generated results can be dropped straight into the project as usable clips Music generation (Suno) Integrated Suno to generate musical ideas quickly (drums, melodies, vocals, etc.) Generated results can be dropped straight into the project as usable clips MIDI board (compose directly) A built-in MIDI piano board to add notes with piano and other instruments You can compose manually or ask the AI agent to create notes for you MIDI board (compose directly) A built-in MIDI piano board to add notes with piano and other instruments You can compose manually or ask the AI agent to create notes for you Strudel integration We integrated Strudel so users can create / play pattern-based music and bring it into the workflow This gives fast “live coding / pattern” creation alongside timeline editing Strudel integration We integrated Strudel so users can create / play pattern-based music and bring it into the workflow This gives fast “live coding / pattern” creation alongside timeline editing Editing + arranging Basic editing for building a song quickly: add/move/delete regions/clips simple arrangement across tracks (optional) trimming/looping depending on what you implemented Editing + arranging Basic editing for building a song quickly: add/move/delete regions/clips simple arrangement across tracks (optional) trimming/looping depending on what you implemented Export Export your work so it’s shareable outside the app (music export for demo + sharing) Export Export your work so it’s shareable outside the app (music export for demo + sharing)

How we built it

(high level) Collaboration layer: real-time updates for timeline changes + cursor presence (Figma-like) AI layer: Claude SDK agent connected to CoJam via an MCP server so the agent can use the same actions a user can Generation layer: Suno for fast audio idea generation that becomes real clips in the editor Composition layer: MIDI board + Strudel patterns to support both note-based and pattern-based creation Output layer: export pipeline so projects can be shared as actual music If you want, paste your actual tech stack (React/Next, Supabase, websockets, etc.) and I’ll rewrite this into a Devpost-ready version with concrete details (what runs where, how realtime works, how MCP tools are structured, and what exactly is supported in editing/export).