MCP server

GoCodebook — California Building Codes Official

com.gocodebook/codes

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Verbatim California Title 24 and local zoning code lookup by section number, with citations.

Working at last checkVerified publisher: gocodebook.comAbout 1,025 tokens per request once connected3 tools

https://gocodebook.com/api/mcp

At a glance

Type: MCP server
Publisher: gocodebook.com (verified by the MCP Registry)
Status: Working at last check
Tools: 3
Token cost: About 1,025 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 25 Oct 2026, 20:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http codes https://gocodebook.com/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.codes]
url = "https://gocodebook.com/api/mcp"

Gemini CLI

{"mcpServers":{"codes":{"httpUrl":"https://gocodebook.com/api/mcp"}}}

Cursor

{"mcpServers":{"codes":{"url":"https://gocodebook.com/api/mcp"}}}

VS Code

{"servers":{"codes":{"type":"http","url":"https://gocodebook.com/api/mcp"}}}

Antigravity

agy mcp add codes https://gocodebook.com/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"codes","server_url":"https://gocodebook.com/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"codes","server_url":"https://gocodebook.com/api/mcp"}

list_california_code_documents ~144 tokens
List the California codes and local ordinances available for lookup, and what is not covered. Useful before concluding that a code is unavailable, and for finding the exact document or jurisdiction slug that a lookup takes.
lookup_california_code_section ~498 tokens
Look up the VERBATIM text of a California building, residential, fire, plumbing, mechanical, green (CALGreen), energy or existing-building code section, or a section of a California city or county zoning/municipal ordinance, by its section number. Use this whenever the user cites a section number ("
search_california_codes ~383 tokens
Search California building codes (Title 24), state housing law and California city and county zoning/municipal codes by TOPIC, when the user does not already have a section number — e.g. "minimum attic access opening", "ADU setbacks in San Jose". Requires the user's GoCodebook account and uses 1 cre

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