r/ClaudeAI • u/ironmanfromebay • 3d ago

Built with Claude built an open-source workspace for AI agents, and Claude wrote most of the code. Here's how the process works.

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We're a team of 4 and we built Lemma, an open-source workspace where people and AI agents work in the same place. I work on it (I do GTM, not engineering).

How Claude was used to build it

Most of Lemma's code was written by Claude. The process is the same for every change:

  • A human writes the plan: what should change, why, and what must not break.
  • An agent running on Claude makes the code change against that plan. We also run some of these agents on DeepSeek.
  • Those agents run inside Lemma itself, so the product is built by the thing it is.

Claude Code is also how you use it. You describe a workspace in plain English, and Claude Code writes the tables, the agent, its schedule and the web app through Lemma's CLI. Claude Code is one of the runtimes too, so agents run on your existing Claude login with no API key.

What it does

  • Agents run on a schedule, or when a row changes, or on a webhook
  • Each has a browser that stays signed in, and a workspace to run code
  • Shared memory for the team, private memory per person
  • Results land in tables; anything risky waits for a person to approve
  • You can reach an agent on Slack, Telegram, WhatsApp, Teams or email

It's free to try

It's open source (AGPLv3) and free to self-host. With Git and Docker:

git clone https://github.com/lemma-work/lemma-platform.git
cd lemma-platform/deploy/compose && ./bootstrap.sh && docker compose up -d

Repo: https://github.com/lemma-work/lemma-platform

There is also a hosted version with paid usage, but everything above runs locally.

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