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Multiplayer

Debugging agent that gives your coding agent full-stack unsampled production data to fix real bugs

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freemiumFree is $0 forever with full control, unlimited bug fixes and community support. The paid tier is $12 per user and adds unlimited bug fixes, SSO/SAML, 30-day data retention and email support.View full pricing →

Visit Multiplayer

https://www.multiplayer.app

About Multiplayer

Multiplayer is a debugging agent that connects your existing coding agent to production so bugs get fixed against real data rather than against a guess. The problem it names is specific and current: coding agents produce plausible fixes when they cannot see what actually happened, and the result is PR slop — changes that look reasonable, pass review, and do not address the fault. Multiplayer's answer is better data. It captures full-stack, auto-correlated, unsampled telemetry spanning frontend screens through backend traces and logs, including the things conventional observability tools discard — request and response bodies and headers from every component in the system. That gives the agent the actual failing request rather than an aggregate metric. Installation is one copy-paste in the terminal via a global npm package, and it runs locally, which matters because local operation is what lets it eliminate PR slop before a pull request exists rather than reviewing one afterwards. The published use cases cover debugging AI-generated code, feature development, multi-agent development workflows, failing tests and mobile development. The free tier is unusually generous — unlimited bug fixes forever with full control — and the paid tier at $12 per user adds SSO/SAML and 30-day data retention.

Key Features

Connects your existing coding agent to production data
Full-stack, auto-correlated, unsampled telemetry
Captures request/response content and headers other observability tools drop
Runs locally via a one-line npm install
Frontend screens through backend traces and logs in one correlated view
Use cases spanning AI-generated code, failing tests and mobile development
Unlimited bug fixes on the free tier

Multiplayer Pros & Cons

Pros

  • +Unsampled request/response capture is exactly the data agents lack when guessing at a fix
  • +Free tier with unlimited bug fixes is genuinely usable rather than a trial
  • +$12 per user is far below typical observability seat pricing
  • +Local operation means production data does not have to leave your control to use it
  • +Agent-agnostic — it improves whichever coding agent you already run

⚠️ Cons

  • Capturing unsampled request and response bodies raises real data-handling questions
  • 30-day retention is short for intermittent bugs that surface quarterly
  • Value depends on already using a coding agent for fixes
  • Full-stack instrumentation is more setup than the one-line install implies for complex systems

Who Is Multiplayer Best For?

👤Teams whose coding agent produces confident but wrong bug fixes
👤Developers debugging production issues they cannot reproduce locally
👤Engineering groups running multi-agent development workflows

Tags

debuggingobservabilityai-agentscoding-agentstracingdeveloper-tools
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