Coredence

Guide

Personal context over MCP: one picture of you for every assistant

The Model Context Protocol lets an assistant ask a local program for what it needs. Used for personal context, it means the picture of how you work lives in one place instead of in every tool's settings.

Ahmet Karaca ·

What MCP changes

Without MCP, every assistant keeps its own instructions: a CLAUDE.md, a Cursor rule, a custom instruction in a chat app. Each is a copy, and copies drift.

An MCP server is a small program the assistant can call. Claude, Claude Code, Cursor and Codex all speak the protocol, so one server can answer all of them. Instead of carrying everything about you up front, the assistant asks when it needs to: what does this person think about testing, how do they want answers formatted, what were they working on last week.

What a personal-context server should offer

  • The whole picture in one call, for the start of a task.
  • Search by subject, so an assistant working on a deploy can ask about deploys only.
  • The evidence behind each claim. A rule without its source is a rumour about you.
  • Some sense of confidence. "Seen once" and "seen forty times" should not read the same.

What to check before you trust one

Personal context is exactly the data you should be careful with. Before you connect any server — this one included — check four things:

  • It is read-only. An assistant that can rewrite who you are can be talked into it. The tools should only answer questions.
  • It runs locally, over stdio, not as a hosted endpoint. Your working style should not need an account somewhere.
  • You can see where the data lives and open it with a tool you did not get from the same vendor.
  • You can verify it opens no network connections. On macOS, lsof -i against the process should print nothing.

Where Coredence fits

Coredence builds that picture from your own sessions, commits and notes, and serves it through a read-only MCP server with five tools: identity for the whole picture, rules to search by subject, layer and confidence, evidence for the real moments behind a rule, topics, and axes for how you choose when nothing has been said. It runs locally over stdio, keeps everything in one SQLite file you can open yourself, and is in the official MCP Registry as io.github.coredence/coredence.

You can explore a made-up person's identity in your browser, without installing anything.

Try it in your browser