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Release Notes | 11 May 2026

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New features​

The debugging agent for developers​

we’re launching the Multiplayer debugging agent, purpose-built for developers working with coding agents.

Multiplayer started with a simple premise: capture the full-stack, unsampled session data that observability tools miss. That data foundation turns out to be exactly what coding agents need to fix bugs effectively: complete runtime context, pre-correlated across your entire system, scoped to the session that broke.

The debugging agent builds on that foundation to close the loop automatically. It runs locally next to your coding agent and manages the whole process from bug identified to bug fixed: data gathering, intelligent triage and issue deduplication, coding agent prompting, PR creation and user notification. We cache sessions locally and only send data when we identify a new issue, so your coding agent gets exactly what it needs and nothing more.

Get started with just one copy/paste into your terminal:

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

Key technical capabilities and differentiators:

  • Session-based data collection, instead of bloated, costly and noisy always-on collection.
  • Local-first architecture that caches sessions locally and only sends data when it identifies a new issue.
  • Un-sampled full-stack data, with nothing missing, including request/response content and headers from deep within your system.
  • Automatic data correlation across frontend and backend.
  • Intelligent issue grouping, triage and deduplication to avoid PR slop.
  • Add intent and context directly to sessions with developer annotations, comments and sketches.

Multiplayer debugging session in the terminal

📌 If you’re interested in a particular feature send us a note - this will help us prioritize what you need the most!