Open-source CLI with Atlan

brain is the command-line tool of the open-source Agent Registry project. This section covers only how to use it with Atlan Agent Registry. For brain itself, see the open-source project’s documentation. brain reaches Atlan Agent Registry through the Atlan adapter, a signed module Atlan releases separately from brain. With the adapter, brain can:

• install skills from any workspace you can see in your organization;
• publish skills to a workspace as new versions;
• send your coding-agent sessions to Atlan as traces.

For Atlan, brain with the adapter replaces the deprecated atlanai CLI.

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Atlan Desktop setup

Atlan Desktop sets up brain for you. When it starts, it:

• moves an earlier registry setup over to brain;
• installs brain if it’s missing, or updates it when it’s older than the oldest version Atlan supports;
• adds ~/.brain/bin to your shell’s PATH.

Once you sign in to Atlan Desktop, it also:

• installs the Atlan adapter if it’s missing. After that, brain keeps the adapter up to date itself;
• signs brain in to each organization you belong to, using your Atlan Desktop sign-in;
• turns off atlanai once brain is signed in to all your organizations.

See Move to brain for exactly what the app changes. You can run brain in a terminal on the same machine. It uses the accounts Atlan Desktop signed in. Run brain auth list to see them.

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Command-line setup

You install brain and the Atlan adapter yourself, and nothing moves you off atlanai. Set it up yourself:

1. Use brain with Atlan: install the Atlan adapter, sign in, install skills, and publish.
2. Move to brain: if you used atlanai, stop it and map your commands to brain.
3. Capture traces: send Claude Code and Codex sessions to Atlan.

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Core offerings

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