Skip to main content

Quickstart

Multiplayer overview

Multiplayer is a debugging agent designed for developers: we connect your favorite coding agent to runtime data to fix application bugs automatically. Run us locally and eliminate PR slop.

Explore Multiplayer​

Whichever option you choose we provide a guided onboarding in your terminal with:

  • Live demo to see Multiplayer in action (see this example)
  • Setup wizard which will automatically recommend the best setup for your specific project

Setup Multiplayer​

To get started copy/paste this command in your terminal:

npm install -g @multiplayer-app/cli && multiplayer

Follow the steps in the guided setup wizard:

  1. Auth: OAuth login via browser, scoped to a Multiplayer workspace/project.
  2. Directory: Point it at the git repo where it should make commits/branches/PRs when it resolves issues.
  3. Model: Choose the AI backend for issue resolution: gpt-4o, gpt-4o-mini (needs an OpenAI key), or local claude-code (auto-detected if Claude Code is installed and logged in — no separate key needed). ℹ️ We will soon support more coding agents and models, please contact our team if you have specific requirements.
  4. Multiplayer SDK: Auto-detects your stack and installs the right Session Recorder packages (e.g. @multiplayer-app/session-recorder-react, -node) so it can actually capture session data to debug against.
  5. Verify: Confirms everything's wired up, then drops you into the live debugger TUI.

From there it's session-driven: each detected issue becomes a session in the left pane, with a running trace of what the agent did (bash commands, file reads, the diagnosis, the fix) in the center, and session metadata + git actions (open PR, view branch) on the right.

Multiplayer debugging agent bug fixed

ℹ️ Multiplayer is versatile by design, while it takes only a few minutes to get started through your terminal, there are also multiple ways to manually customize your setup.

For example, you can tailor how you capture session replays, how much detail gets recorded and how you debug issues. In this choose-your-own-adventure setup, most teams are fully configured in just a few hours and can get started the same day.

If it’s taking longer or you hit a blocker contact us.

What’s next?​