I turned my AI chat history into a portable cognitive fingerprint

Name: I turned my AI chat history into a portable cognitive fingerprint
Availability: InStock
Author: waterwitch

by waterwitch·Mar 4, 2026·1 point·0 comments

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AI Analysis

●●●BangerZero to OneBig BrainSlick

Bayesian cognitive profile with temporal decay adapts Claude without training on your conversations.

Strengths

•Bayesian 10-dimensional scoring (decision speed, conflict response, abstraction) with 90-day decay is genuinely clever, not a static summary
•MCP integration means Claude gets context seamlessly on first message—solves real re-explanation friction for power users
•Real product in 30 days solo with pgvector + Claude Haiku shows solid execution and taste

Weaknesses

•Only 25 Claude Pro spots; growth bottleneck unclear if platform adoption doesn't scale
•Privacy claims strong but no independent audit—users trusting 'portability' based on founder reputation alone

Post Description

I run two businesses across too many AI tools and got tired of re-explaining myself every time I switched contexts, so I built something that reads your conversation exports from ChatGPT, Claude, Gemini, or Grok and generates a structured model of how you actually reason. Not a summary of what you've talked about. Ten dimensions (incl. decision speed, abstraction level, conflict response) scored with Bayesian updating and 90-day temporal decay so the profile continually updates.

The fingerprint is portable via MCP. I launched it to be compatible with Claude Pro (Claude Code or regular .ai interfaces) on first message and it adapts. Onboarding is about 2 minutes: you upload an export, watch it build in real time, and get a before/after demo using a real question pulled from your own history. One generic Claude response next to one shaped by your fingerprint.

I built it solo with AI-native dev tools in about 30 days. pgvector semantic search, OpenAI embeddings, Claude Haiku for cognitive extraction, Supabase/Postgres backend, OAuth 2.0 with PKCE for Claude.ai, REST API with OpenAPI spec for ChatGPT.

First 25 beta users are free, $10/mo after that.

Try it: https://trypaolo.com

Happy to answer questions about how it works under the hood, and always welcome feedback/bug reports etc.