MCP · Claude

GoCodebook in Claude

Connect GoCodebook and Claude can read California building codes and the local ordinances of 540 cities and counties word for word — with the citation and a link to the full section — instead of answering from memory.

Set it up in about two minutes

1. 1

   Open connector settings

   In Claude (web or desktop), open Customize → Connectors.

2. 2

   Add a custom connector

   Click “+ Add”, then “Add custom connector”.

3. 3

   Enter the server

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

4. 4

   Keep the default sign-in settings

   Leave the authentication options as they are. GoCodebook needs no sign-in to read a section; it asks you to sign in the first time you search by topic.

5. 5

   Save and use it in a chat

   Save the connector, then turn GoCodebook on for a conversation and ask a code question.

Server URL to paste:

https://gocodebook.com/api/mcp

Team or Enterprise: an owner adds it once under Organization settings → Connectors → Add → Custom → Web; members then connect it from their own connector settings.

What it changes

• Real text, not recollection. Claude quotes the section it read, so a setback, a fee or a deadline can be checked against the law.
• The right jurisdiction. City and county codes are kept apart, and a section number is read in the code you name.
• Honest gaps. If a code or section is not held, the tool says so rather than letting Claude guess.

Try asking

• “What does Santa Monica's code require for a home-sharing permit? Quote the section.”
• “Read CRC R302.1 and tell me which walls need a fire separation.”
• “Which San Jose code sections set ADU size limits? Cite them.”
• “Does Oakland require relocation payments for an owner move-in eviction?”

Tools

Questions