# Reflex

- **Event:** [Google I/O Hackathon](https://cerebralvalley.ai/e/google-io-hackathon)
- **When:** Sat, May 23 at 9:00 AM – 10:00 PM (PDT)
- **Where:** Shack15, San Francisco, CA
- **Team:** [Anthony Ronning](https://cerebralvalley.ai/u/anthonyronning)
- **GitHub:** https://github.com/AnthonyRonning/reflex
- **Demo video:** https://youtu.be/kPH6HwUFb94
- **Gallery:** https://cerebralvalley.ai/e/google-io-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/google-io-hackathon/hackathon/gallery/53

Reflex is a self-improvement loop for agent harnesses.

It watches real Antigravity execution traces, sends the trace plus the harness’s current skill files to a Google Managed Agent, and runs a recursive language-model reflection loop with Gemini 3.5 Flash to figure out what went wrong. The reflector can then edit an existing skill or author a new one, turning failed runs into better operating procedures for the next run.

In our demo, Antigravity follows a stale skill, hits missing scripts/files/endpoints, and Reflex automatically patches the harness skills so the next agent discovers the correct project command and validates successfully.

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Markdown version of https://cerebralvalley.ai/e/google-io-hackathon/hackathon/gallery/53. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt