Claude Code Allen Brain allen_expression_datasets
How to: Claude Code Allen Brain allen_expression_datasets
Add Allen Brain to Claude Code
-
01
Run this in your project directory.
claude mcp add --transport http allen-brain https://gateway.pipeworx.io/allen-brain/mcp-
02
Restart your session so the server is picked up.
-
03
Ask for something allen_expression_datasets does. Claude Code lists the server's tools on connect and calls allen_expression_datasets itself — you do not invoke it by name.
-
04
If nothing happens, check the server is running and that Allen Brain's identifier in your config matches the one above exactly.
Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs
Set these first
Allen Brain will not start until these are set, so allen_expression_datasets never becomes available.
-
PIPEWORX_API_KEY
Same tool, other clients
This list was read from the server itself, by connecting to it and calling tools/list on 14 November 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.