# Joestar

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Med Jalel Masmoudi](https://cerebralvalley.ai/u/JalelJoestar)
- **Demo video:** https://youtu.be/Iom-c3aXK4s
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/105

MuseSwarm is a team of four AI engineers that check each other's work: @architect, @builder, @verifier and @lead, all running on Meta's open-weight Muse Spark (muse-spark-open-1026) through Baseten. Single-agent coding assistants often ship untested code, because the same context writes the spec, the code and the tests. MuseSwarm splits those roles. The architect owns the spec and the Kanban board, the builder writes the code, the verifier runs real sandbox tests (node --check and node test.js), and the lead writes the docs. When a test fails, the verifier sends the stack trace back and the builder has to fix it. A fix only counts if it passes the tests and an isolated grade the model can't touch. Every file write records who wrote it, so the credit is honest. In live runs on three judge scenarios with injected bugs, Muse Spark fixed domain.js itself in 2 of 3, and the sandbox verified it. In the third scenario, its fix reintroduced a sorting bug, the tests caught it, and the engine restored the clean file. Everything streams live in a web Studio, through a CLI, and inside Cursor via a 4-tool MCP server.

## More from Meta Global AI Developer Hackathon

- [Zero White Dreams](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/102)
- [Anomer](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/103)
- [KodVani](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/104)
- [Kanopi Lens](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/106)
- [CO](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/107)
- [NeuroLab AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/108)

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