Multiplayer, a debugging agent to run locally next to your coding agent

Show HN: Multiplayer, session-based runtime data collection for coding agents

Operating in show hn launch, Multiplayer, a debugging agent to run locally next to your coding agent operates.

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We built Multiplayer because we kept running into the same problem: coding agents connected to existing observability stacks inherit all the limitations those stacks were built with. Sampled traces, aggregated metrics, context that stops at service boundaries, missing request/response content from deep within the system. The PRs they produce look plausible and fail in production (i.e. “PR slop”).Multiplayer runs locally alongside Claude Code (Codex, Copilot, and Cursor coming soon) and captures full-stack, unsampled session data across your entire system. We collect everything from frontend user actions to backend traces and logs, including request/response content and headers. It’s all the

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Website: www.multiplayer.app