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Help Claude understand your customers.

Stop re-explaining every customer to Claude. Substrate keeps a page on each one, current from your Gmail, Notion and files, and Claude Code, Cowork and Codex recall it on every prompt.

Start free

First 2 weeks free with LAUNCH26, then $20/mo

How it works

Start with one customer

Drop in a customer file and watch their page appear.

Recalled on every prompt

Claude Code, Cowork and Codex get the lines that matter.

Read every page. Edit any line.

Delete a line and Claude stops seeing it.

Try it before you sign up

Upload a few files or see an example first. No account needed.

Try it now