# Rasi Solutions

- **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:** [Pratik Agarwal](https://cerebralvalley.ai/u/Blacifer)
- **GitHub:** https://github.com/Blacifer/REWIND
- **Demo video:** https://youtu.be/1DBzhBi9VUA
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2165

REWIND — The Undo Button for the Physical World

When someone makes a mistake during physical assembly, the usual solution is to retrace their steps, dismantle completed work, or start over. REWIND explores a different approach: AI-assisted recovery that preserves correct work and reverses only what is necessary.

REWIND is a human-in-the-loop, multimodal physical-recovery agent powered by Meta Muse Spark. A user photographs an assembly, Muse interprets its visible state, and a deterministic planning engine calculates the shortest valid sequence of corrective actions within a defined physical model. The user performs each action and submits a new photograph. REWIND checks the observed result, refuses invalid or uncertain transitions, and recalculates the recovery plan when the physical state differs from expectations.

The prototype supports two constrained scenarios: a five-piece Tower and a Modular Bridge. The bridge demonstrates dependency-aware recovery: an incorrect support can be corrected while preserving independently completed work.

The system combines multimodal perception, structured agent tool calling, graph-based recovery planning, state validation, and an exportable evidence history.

Our implementation has passed 127 automated tests, alongside real Meta API connectivity and tool-calling checks. Complete physical recovery and real-world vision accuracy remain open validation milestones, which we distinguish from simulated and fixture-based demonstrations.

Our longer-term vision is recovery assistance for modular assembly, education, furniture, and manufacturing workflows.

See what went wrong. Undo only what is necessary. Verify the result.

## More from Meta Global AI Developer Hackathon

- [Kroonen AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2162)
- [VestiCare](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2163)
- [Qorelly](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2164)
- [Rocky Fx](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2166)
- [Tirith](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2167)
- [AgentGuard](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2168)

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