Multiplayer is now open source
The Multiplayer debugging agent is open source under MIT. Here's why, and what it means for how you use it.
The death of the dashboard: why agentic AI is choking on legacy observability tools
Dashboards, sampling, and data lakes were built for human debugging. Closing the bug-to-fix loop for AI agents requires rethinking how runtime data is collected and correlated.
The debugging agent for developers: runs locally and eliminates PR slop
The Multiplayer debugging agent is purpose-built for developers working with coding agents. It captures all the data observability tools miss and manages the whole process from bug identified to bug fixed.
The (not so) hidden cost of custom logging
Custom logging can technically capture everything, but in practice, it rarely does. Coverage degrades over time, external APIs get forgotten, and during incidents, you're left asking "did anyone log this?" instead of debugging. Automatic capture solves this.
Why observability tools are missing critical debugging data (no matter how you sample)
There's a common belief in the observability space: if you just collect more data, you'll have what you need to debug any issue. The reality is more frustrating: even with 100% unsampled observability, you're still missing critical debugging data.
With Spec-Driven Development we've come full circle to Big Design Up Front
Better specs and clearer task decomposition are a significant step forward. But specs and plans describe intentions. What AI agents also need is visibility into what systems actually do at runtime.
Why AI can't debug your API integrations (yet)
The next generation of debugging doesn’t depend exclusively on the quality of AI models, but it’s heavily dependent on feeding AI tools the context they need to be useful.
Multiplayer 2025: year in review
In 2025 we focused on a simple but ambitious goal: making debugging faster, less fragmented and less manual. Check out all our releases to make that possible.
Multiplayer vs LogRocket: which session replay tool actually fixes bugs?
LogRocket captures frontend behavior with optional sampled backend data through third-party integrations. Multiplayer captures complete, unsampled full-stack sessions (frontend and backend) out of the box, with no integrations required.
Multiplayer vs Mixpanel: which session replay tool actually fixes bugs?
Mixpanel shows you how users behave on your frontend, aggregating website performance metrics. Multiplayer shows how your system behaves, from user actions to backend traces, and how to fix a bug (or have your AI coding assistant do it for you).
Multiplayer vs PostHog: which session replay tool actually fixes bugs?
PostHog is a product analytics platform with frontend-only session replay. Multiplayer is purpose-built for debugging with full-stack session recordings, from user actions to backend traces, showing you how to fix a bug (or have your AI coding assistant do it for you).
Multiplayer vs Fullstory: which session replay tool actually gives you the full story?
Fullstory shows you how users behave on your website, aggregating performance metrics. Multiplayer shows how your system behaves, from user actions to backend traces, and how to fix a bug (or have your AI coding assistant do it for you).