Coworker v0.5.0: Local Desktop Agent with Markdown Memory

Melvin Vivas · X post · 2026-09-11 · Open on X

Topics: AI Agents, Tool Use & MCP, AI Dev Tools & Productivity · Level: intermediate

Summary

Release notes for Coworker v0.5.0, the creator's local desktop agent, built using Codex for coding, testing, docs and release. Each coworker now has memory stored as a plain markdown file. You can edit it by chatting, from settings, or by changing the file directly.

Key points

• Coworker v0.5.0 adds memory for each coworker, plus bug fixes.
• Memory is a simple markdown file, kept simple on purpose because the app runs locally.
• Edit memory by chatting, in settings, or by editing the markdown file.
• The creator used Codex to code, test, document and release the app.

Resources mentioned

• Coworker v0.5.0 release (donvito/coworker) · repo · github.com · free
  Download page for the release that adds markdown-based memory to the local desktop agent.
• OpenAI Codex · tool · openai.com · paid
  OpenAI's coding agent. In the diagram it writes code, fixes review findings and drives the build loop. The creator also used it to make this video.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Sign in with ChatGPT: Setting Usage Limits for Each App (Melvin Vivas on X · notes), Codex Cloud Environments Must Be Saved & Published Before Use (Melvin Vivas on X · notes) and 240 more

Try this

• Download Coworker v0.5.0 from the GitHub release page.
• Add simple markdown-file memory to a local agent, editable by chat or by hand.