Lab Reports
Things I've built — software and process.
Not just code. Some of the work I'm proudest of is a process — a way of working that made a team faster. Each entry says whether it's software or process, and whether AI was a build partner.
Featured Report
CORA
A desktop copilot that watches my GitHub pull requests: an agent-native architecture where the assistant and the GUI share one command layer, C4 diagrams for blast radius, and a review plan that ranks by arithmetic instead of judgment.
After many hours in somebody else's PR reviewer, I built my own to try a few ideas: an agent-native architecture where the built-in assistant drives the same audited actions as the buttons, C4 to work out what a change actually touches, an always-on-top panel so pull requests reach someone whose attention is committed elsewhere, and computed diff metrics in place of the model's judgment wherever it would hold still. Six weeks on Tauri and Bedrock, and most of what improved was not the AI.
Other Lab Reports
Grey Eminence
A native macOS meeting recorder that never joins the call: on-device transcription, speaker diarization, and a Claude-powered memory of everything said.
TCC
An experiment with the tiny pi coding agent that became my daily-driver harness: AWS Bedrock underneath, twenty-five extensions on top, every behaviour mine to change.
MCP servers
A monorepo of Model Context Protocol servers built as facades, not adapters: each tool answers a question I actually ask, with the org's tribal knowledge baked in.
Evalu8
A one-evening Electron app that replaced the Postman collection: a bespoke client for a sparsely documented API, built to explore call evaluations the way I actually wanted to read them.
matthewpurdon.me + design system
This site and the dark, data-forward design system under it: a look distilled from sites I admire, a voice cloned from my own Teams messages, and every page built in three layers.
Technical Evolution (TE) Proposals
A lightweight RFC format for engineering teams — small enough that people actually write them.
On the bench
public GitHub, as of Oct 5, 2026- contributions, last 12 months
- 3,760
- longest streak
- 54d
- public repos
- 51
- on GitHub since
- 2009
- Elixir 30%
- Swift 26%
- TypeScript 15%
- Rust 10%
- PHP 6%
- Python 6%
- other 8%
Recently pushed
- matthewpurdon.me Oct 2
The MatthewPurdon.me website
- cora Oct 2
CORA — AI code-review copilot for GitHub pull requests
- tariffmap Oct 2
A live, sourced map of the world's tariffs — tariffmap.org
- greyeminence Oct 2
Native macOS meeting recording & transcription app
- gitf Sep 26
GiTF — Ghost in the Factory, a multi-agent orchestration system for AI coding assistants.
- pontifex Sep 25
Bridge-keeper for an EventBridge event bus: browse, edit, validate and register schemas