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Olbrain Alchemist

Official registry Developer tools

Build, test and publish Olbrain AI agents from Claude Code, Codex or Claude.ai.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http olbrain-alchemist 'https://alchemist.olbrain.com/mcp/'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "olbrain-alchemist": {
            "type": "http",
            "url": "https://alchemist.olbrain.com/mcp/"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Alchemist
  2. Install
  3. Use it
  4. Tools
  5. Privacy
  6. Licence

Alchemist

Build, test and publish Olbrain AI agents from Claude Code, Codex or claude.ai. You describe the agent; Alchemist, Olbrain's agent builder, plans it, builds it, tests it and asks you before anything goes live.

Install

Claude Code
/plugin marketplace add Olbrain/alchemist-plugin
/plugin install alchemist@alchemist

Then run /mcp, pick alchemist and sign in with your Olbrain account. New to Olbrain? Choose Create account on the sign-in page.

Codex
codex mcp add alchemist --url https://alchemist.olbrain.com/mcp/
codex mcp login alchemist

Optional: copy plugins/alchemist/skills/alchemist to ~/.agents/skills/alchemist so Codex follows the same workflow as Claude.

claude.ai and Claude Code on the web

Add a custom connector with the URL https://alchemist.olbrain.com/mcp/ (Customize → Connectors → Add custom connector; on Team and Enterprise plans an owner adds it under Organization settings → Connectors). Then click Connect and sign in.

Use it

  • Ask in plain words: "Use Alchemist to build an agent that answers questions about our pricing and hands refunds to a person."
  • /alchemist:build <what the agent should do> starts a build.
  • "Put my support agent on my website" or "call my intake job when our signup form is sent": Claude adds the chat snippet, or a server route that calls the agent, to your project. It never puts your API key in browser code.
  • /alchemist:status shows your account, organisation, builds and any cards waiting on you.

Before Alchemist publishes an agent, makes it live, merges agents or changes how one behaves, it stops with an approval card. Claude shows you the card and waits for your choice, and Claude Code asks your permission before sending it.

Tools

ToolWhat it does
whoamiWho you are signed in as, and your organisations
create_orgCreate an organisation and make it active
select_orgSwitch your active organisation (everywhere you are signed in)
list_membersWho is in your organisation
alchemistOne builder turn: describe or continue a build
alchemist_answerSend your choice on an approval card
alchemist_buildsList your builds
alchemist_buildOne build: its plan, agents and waiting cards
alchemist_stopStop the turn a build is running
alchemist_connectPut a live agent on your website or call it from your code

Inviting people and joining an organisation happen in Noesis. Every build can also be opened there.

Privacy

Every tool call goes to https://alchemist.olbrain.com, which acts as you in Olbrain. It keeps your Olbrain sign-in encrypted so you stay signed in, and you can end that at any time by removing the connection.

Once an agent is live, its go-live steps call Olbrain's agent API at https://webhook.olbrain.com with your organisation's API key: to test it, upload a file for a job, start a job, or from the server route Claude adds to your app. You run those commands yourself, and the key stays in your own environment.

Olbrain's privacy policy: olbrain.com/privacy.html.

Licence

Copyright Olbrain. All rights reserved.

Frequently asked questions

What is Olbrain Alchemist?

Build, test and publish Olbrain AI agents from Claude Code, Codex or Claude.ai.

How do I install Olbrain Alchemist?

It runs as a remote server. In Claude Code: claude mcp add --transport http olbrain-alchemist 'https://alchemist.olbrain.com/mcp/'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Olbrain Alchemist need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Olbrain Alchemist open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Olbrain Alchemist?

It is published by Olbrain. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.