Purpose-built for developers working with coding agents
Coding agents adoption keeps growing, but quality continues to be inconsistent, with some companies doubling their Change Failure Rate: coding agents ship code fast and also introduce bugs and security vulnerabilities fast.
Many tools claim to give coding agents the runtime visibility they need to ensure that AI-generated code is functionally correct, but only Multiplayer is built from the ground-up to do just that without excessive or missing data.
The perfect companion for coding agents
Multiplayer runs locally next to your favorite coding agent and captures full-stack session data (including the data observability tools miss!) only when something goes wrong.
Our debugging agent 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.
Key benefits
The result is what developers actually want from AI-assisted development:
No more AI workslop
Multiplayer captures full-stack session data, auto-correlated across your entire system, so every fix your coding agent writes is grounded in what actually happened, limiting hallucinated fixes and wasted time verifying AI outputs and cleaning them up.
Accelerated root cause analysis
Everything needed to understand the problem is in one place, pre-correlated in a single timeline. This means less manual investigation time for you and fewer tokens burned on your coding agent grepping through unrelated data.
High-quality, merge-ready PR
Multiplayer only captures data when a new issue is identified, and deduplicates it before anything reaches your coding agent. The same bug reported a hundred times becomes one issue, one prompt, one PR. You review it once, merge it, move on. No duplicate work, no avalanche of near-identical PRs competing for your attention.
Lower cloud and tool bills
Session-based data collection means you're not paying to store and process everything your system produces around the clock. Multiplayer is built on OpenTelemetry and available as open source, so there's no proprietary instrumentation locking you into a vendor. When a better coding agent comes out, you switch: Multiplayer works with Claude Code, Codex, Copilot, and Cursor today, and whatever ships next. The hosted version is priced to reflect the leaner data model, not the bloated always-on approach of traditional APMs.
Real-world workflows
Multiplayer connects your coding agent to production runtime data, automating workflows that would otherwise cost you hours of manual investigation.
Resolve bugs before your users (or teammates) notice: Multiplayer monitors production continuously, surfaces new issues the moment a session reveals them, and correlates the failure across your stack before your error rate spikes. You can also trigger issues manually during development before your teammates find "refactoring opportunities."
Catch the bugs that are hardest to reproduce: Transient, non-deterministic, environment-specific bugs leave no reliable trail. Multiplayer captures the exact full-stack, unsampled session conditions that caused them and feeds that directly to your coding agent.
Vibe coding that ships cleanly in production: Agent-introduced bugs are not immediately obvious because they pass static analysis, pass your tests, and surface only in production under specific user conditions. Nothing breaks visibly and no alerts fire because the error threshold is never crossed. Multiplayer catches them anyway, groups them by issue, and prompts your coding agent before the problem compounds.
Actual self-healing systems: A coding agent querying your existing observability stack inherits every limitation it was built with: sampled traces, missing correlation, context that stops at system boundaries. Multiplayer adopts a fundamentally different approach to how runtime data is collected, retained, and correlated from the start: unsampled, pre-correlated, scoped to the session that broke. Your coding agent gets exactly what it needs to open a merge-ready PR, automatically.