MCP · ChatGPT

GoCodebook in ChatGPT

Connect GoCodebook and ChatGPT can read California building codes and the local ordinances of 540cities and counties word for word, with the citation and a link to the full section.

Set it up

1. 1

   Turn on developer mode

   In ChatGPT on the web, open Settings → Apps → Advanced settings and turn on Developer mode. On Business, only workspace admins and owners can; on Enterprise and Edu, an admin grants it first.

2. 2

   Create an app

   Go to Settings → Apps → Create (admins can also use Workspace settings → Apps → Create).

3. 3

   Enter the server

   Name it GoCodebook and enter the MCP server URL: https://gocodebook.com/api/mcp

4. 4

   Choose OAuth and scan the tools

   Pick OAuth as the authentication, click Scan Tools, and sign in to GoCodebook when asked. Then click Create.

5. 5

   Use it in a chat

   Start a chat, pick GoCodebook from the tools menu or mention it, and ask a code question. Workspace admins can publish it for everyone under Workspace settings → Apps.

MCP server URL:

https://gocodebook.com/api/mcp

What it changes

• Answers you can check. ChatGPT quotes the section it read and links to it.
• Local law, not just state law. Zoning, rentals, business licenses, noise, vending — whatever the city's own code says.
• Read-only. GoCodebook's tools never change anything in your account except deducting search credits.

Try asking

• “Using GoCodebook, quote Los Angeles' sidewalk vending rules and cite the section.”
• “What business license tax does Fresno charge? Show the section text.”
• “Read CBC 1004 and summarize the occupant load factors.”
• “Which Sacramento sections set exterior noise limits?”

Tools

Questions