# WiredFront

- **Event:** [The Harness Engineering & Model Wrangling #SFTechWeek Hackathon](https://cerebralvalley.ai/e/mongodb-sftw-hackathon)
- **When:** Sun, Oct 11 at 9:00 AM – 10:00 PM (PDT)
- **Where:** San Francisco, CA
- **Team:** [Jesse Hall](https://cerebralvalley.ai/u/Jessay)
- **GitHub:** https://github.com/eonsofstupid/vibeguard
- **Demo video:** https://youtu.be/FP464OX1Kd8
- **Gallery:** https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/41

VibeGuard is a self-tightening agent harness built for vibecoders — people who ship with AI coding tools and pay for every retry, runaway loop and leaked key. The agent attempts coding tasks, a deterministic judge scores them, and every failure category on a training task becomes a proposed guardrail rule carrying its provenance (the failing attempt, the matched snippet, the detector). Only a human can approve — or loosen — a rule; the next run loads approved rules automatically. Held-out pass rate climbed 1/6 → 3/6 → 5/6 → 6/6 over five runs with zero false blocks, with Wilson 95% intervals on every point. All state lives in MongoDB Atlas as the Agent Engine’s four memory types — procedural (versioned rules), episodic (run traces), semantic (vibecoder lexicon with Voyage embeddings and Atlas Vector Search), taxonomic (failure categories) — plus an append-only audit of receipts, and is mirrored into Atlas Agent Engine hosted memory, whose build_context() hands the approved rules back as the agent’s context policy. A COSTAR side-conversation scores each prompt and emits a form of at most two questions before any money is spent. Deployed on Modelence Cloud; Raindrop-instrumented (proposals as AI events, human verdicts as signals). Statement 1: recursive harnessing. Statement 2: long-horizon memory driven by a hard metric. Agents tighten their own leash; only humans loosen it.

## More from The Harness Engineering & Model Wrangling #SFTechWeek Hackathon

- [Pehovski](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/38)
- [MerryCo](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/39)
- [AgentTab](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/40)
- [Mavericks](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/42)
- [OpenLLM](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/43)
- [Rainy Day Fund](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/44)

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Markdown version of https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/41. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt