Purpose-built for developers working with coding agents
Coding agents accelerate code production but don’t solve for software quality. Every hour a developer spends triaging PR slop, reverting a bad fix, or manually fixing a bug by grepping through logs, is an hour not spent building the next feature. At team scale the problem compounds fast.
Multiplayer automatically closes the debugging loop (detection, triage, deduplication, PR, fix) in any environment where code runs, not just production, so that developers can focus on building.
The perfect companion for coding agents
Multiplayer runs locally next to your favorite coding agent and captures full-stack, unsampled session data (including data observability tools miss!) And, we only save data when something goes wrong.
Multiplayer deduplicates and scores issues locally before anything reaches your coding agent. The same bug appearing across a hundred sessions becomes one issue, assessed for fixability, sent only once. Your coding agent works from a complete, aggregated picture of the failure to produce a high-quality, merge-ready PR.
Key benefits
The result is what developers actually want from AI-assisted development:
Reclaim feature development time
Inefficient (or manual!) debugging and PR slop wastes hours of developer time. Multiplayer keeps developers in feature development mode, with no context-switching into debugging, and no double-checking coding agent output because you're not sure it can be trusted.
Catch bugs in any environment, not just prod
Most tools focus on production only. Multiplayer runs locally in development, testing, QA, and production, catching bugs the moment they're introduced, before code leaves your machine. The feedback loop goes from "ship, wait for production signal, debug" to "write, catch, fix in the same session.”
Quality keeps pace with velocity
Coding agents ship code fast, but without a closed debugging loop that velocity gets offset by poor software quality and debugging overhead. Multiplayer monitors continuously, surfaces issues the moment a session reveals them, and grounds every fix in full-stack, unsampled, pre-correlated session data, so the productivity gain is real.
No vendor lock-in, no bloated bills
Multiplayer is plug and play with any coding agent: Claude Code, Codex, Copilot, Cursor. When a better or cheaper model ships, you switch without rebuilding your tech stack. Built on OpenTelemetry and available as open source, with a session-based data model that means you're sending exactly what your coding agent needs, and nothing more.
Real-world workflows
Multiplayer connects your coding agent to runtime data, automating workflows that would otherwise cost you hours of manual work.
Resolve bugs while you build: Run Multiplayer alongside your coding agent during development and fix bugs as they appear. Review PRs as issues surface, or switch to auto pilot and let Multiplayer handle the bug fixing loop while you stay focused on the next feature. Either way, you ship better software without the overhead of a separate debugging phase.
Code that reflects how your system actually behaves: Coding agents generate generic suggestions when they're working without runtime context. Multiplayer gives them full-stack session data from your actual system, so implementations align with real behavior. Security vulnerabilities get caught in development, not in production after they've already shipped.
Vibe coding without surprises: Agent-introduced bugs are not immediately obvious and accumulate silently until your users find them first. Multiplayer catches them early, groups them by issue, scores them for fixability, and sends one focused prompt to your coding agent.