# Beyond The Limit (BTL)

- **Event:** [Built with Opus 4.7: a Claude Code hackathon](https://cerebralvalley.ai/e/built-with-4-7-hackathon)
- **When:** Apr 21 at 12:00 PM – Apr 27 at 2:00 AM (EDT)
- **Where:** Online
- **Team:** [M Noman](https://cerebralvalley.ai/u/nomang)
- **GitHub:** https://github.com/nomang/kith--for-claude-4.7-hackathon.git
- **Demo video:** https://www.loom.com/share/7d25029355da4a26b624b6f8c072b84d
- **Gallery:** https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery/94

My father has Alzheimer's. This submission is the tool I wished existed for him.

Kith holds the person, when memory cannot.

55 million people are losing themselves to dementia right now. By 2030, 110 million+. Every product built for them solves logistics — pill reminders, GPS, alerts. None of them hold the person.

Kith does. It's a 24/7 AI companion for patients, families, and care teams — designed around four Opus 4.7 capabilities that earlier LLMs could not have supported.

A SHOEBOX BECOMES A LIFE STORY. Most families freeze at a blank onboarding form. They have photographs. Kith uses Opus 4.7's 2576px vision to read scanned family photos — including the handwritten captions on the back, signage in the background, and text in cards and letters — drafting a structured Personhood Map the family reviews. Names, dates, relationships, occasions. Every claim flagged with its source image. multiple photographs in, few seconds later, the family has a simple document of their loved one's life.

A NURSE'S NOTEBOOK ACROSS EVERY SESSION. Kith keeps five living markdown files in file-system memory — today.md, recurring_themes.md, joy_log.md, concerns.md, gentle_boundaries.md. Read at the start of every session. Updated after every turn. Restructured nightly by a reflection agent. The patient forgets yesterday. Kith does not. This is what Opus 4.7's improved file-memory was built for.

A SAFETY ARCHITECTURE, NOT A SAFETY DISCLAIMER. Every patient response runs a silent self-verification pass: list every specific claim, identify its source, rewrite if unsourced. Dissonant-data resistance handles the hardest moments — when the patient confidently asserts a fabrication, Kith holds ground without harshly contradicting. Adaptive thinking responds in 1 second on "who is this?" and pauses for 4 seconds on "where is George?" when George has passed. In this domain, a hallucinated memory is not a product bug — it is a harm to a person who cannot correct it.

A WEEKLY LETTER, NOT A DASHBOARD. Five parallel Claude subagents — Mood, Memory, Changes, Routines, Joy — read each week's conversation log through their specialized lenses. A sixth synthesizes them into ~400 words written like a thoughtful nurse, not a notification. The kind of letter a family keeps.


Every Opus 4.7 capability we used is load-bearing. Every safety rule is architectural, not aspirational. This is what AI companion care actually looks like when you build it for someone you love.

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Markdown version of https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery/94. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt