{"slug": "show-hn-multiplayer-open-source-local-debugging-agent-unsampled-runtime-data", "title": "Show HN: Multiplayer – open-source local debugging agent, unsampled runtime data", "summary": "Multiplayer, an open-source local debugging agent, captures unsampled full-stack session data when production issues occur and routes it to coding agents to generate fixes. The tool runs locally, correlates data across services, deduplicates issues, and includes request/response content typically stripped by standard APMs.", "body_md": "We just open sourced Multiplayer: [https://github.com/multiplayer-app/multiplayer](https://github.com/multiplayer-app/multiplayer)\n\nMultiplayer is a local debugging agent that captures full-stack, unsampled session data when something breaks in production and routes it to your coding agent to generate a fix. It runs on your machine, next to your coding agent. A few things that make it different from connecting a coding agent directly to your observability stack:\n\n- Session-based collection instead of always-on(we only capture when something goes wrong) - Nothing gets sent anywhere until we've identified a new issue worth surfacing - Data is pre-correlated across service boundaries before it reaches the agent - Issues are deduplicated before routing - Includes what standard APMs strip out: request/response content and headers, release metadata, an issue summary, etc.\n\nWe wrote about why we're open sourcing now here: [https://www.multiplayer.app/blog/multiplayer-is-now-open-sou...](https://www.multiplayer.app/blog/multiplayer-is-now-open-source/)\n\nShort version: we believe in this community, and we think the root cause of low-quality AI-generated PRs is the same data problem we're trying to solve.\n\nHappy to answer any questions.\n\nComments URL: [https://news.ycombinator.com/item?id=48586499](https://news.ycombinator.com/item?id=48586499)\n\nPoints: 2\n\n# Comments: 0", "url": "https://wpnews.pro/news/show-hn-multiplayer-open-source-local-debugging-agent-unsampled-runtime-data", "canonical_source": "https://github.com/multiplayer-app/multiplayer", "published_at": "2026-06-18 15:02:56+00:00", "updated_at": "2026-06-18 15:23:10.778908+00:00", "lang": "en", "topics": ["developer-tools", "ai-agents", "ai-tools"], "entities": ["Multiplayer", "Multiplayer.app"], "alternates": {"html": "https://wpnews.pro/news/show-hn-multiplayer-open-source-local-debugging-agent-unsampled-runtime-data", "markdown": "https://wpnews.pro/news/show-hn-multiplayer-open-source-local-debugging-agent-unsampled-runtime-data.md", "text": "https://wpnews.pro/news/show-hn-multiplayer-open-source-local-debugging-agent-unsampled-runtime-data.txt", "jsonld": "https://wpnews.pro/news/show-hn-multiplayer-open-source-local-debugging-agent-unsampled-runtime-data.jsonld"}}