# The Whisperer

- **Event:** [The Persistent Context Sprint Hackathon | Live at MongoDB .Local Build Fest](https://cerebralvalley.ai/e/persistent-context-sprint-hackathon)
- **When:** Thu, Aug 13 at 12:30 – 8:00 PM (PDT)
- **Where:** Pier 48, San Francisco, CA
- **Team:** [James Olaitan](https://cerebralvalley.ai/u/jamesss)
- **GitHub:** https://github.com/JamesOlaitan/no-cold-start
- **Demo video:** https://drive.google.com/drive/folders/1RZL-Z4oDpMU6oFrcFAnrLT3uxZKSgXys?usp=sharing
- **Gallery:** https://cerebralvalley.ai/e/persistent-context-sprint-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/persistent-context-sprint-hackathon/hackathon/gallery/65

A memory backend for hardware listening and whispering devices that whisper relevant facts about friends and acquaintances into our ears after hearing their name. It hears a name, and it says out loud the one or two things that actually matter right now about that person — not everything ever recorded about them, just what's relevant today. A health scare from three days ago gets mentioned. A coffee order from three months ago doesn't. Every fact has its own urgency and its own decay rate, so what is spoken changes over time on its own. 

Additionally, every choice the system makes is saved as a record, right next to the facts. Not just "here's what I said," but "here's what I said, here's what I left out, and here's the reasoning." You can click "why did you say that" and see the actual scored comparison between the facts it picked and the ones it didn't. That record can even point back to earlier records so that you can trace a whole chain of decisions, not just the last one.


Built on MongoDB Atlas, an aggregation pipeline scores every fact by recency, urgency, and confidence in one query, and a graph lookup walks the decision chain backward. ElevenLabs turns the chosen facts into speech, and the tone of the voice shifts with how urgent the facts are — flatter for routine facts, with more emotional weight for the ones that matter.

This way, I or any other specialist can query the log for validation and to ensure compliance and relevance.

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Markdown version of https://cerebralvalley.ai/e/persistent-context-sprint-hackathon/hackathon/gallery/65. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt