GoCodebook — California Building Codes MCP Server

by gocodebook Your server? Claim it

answering

GoCodebook — California Building Codes is answering right now. Last checked 5 min ago. It exposes 3 tools.

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

Uptime history 39 days of history · worst day 0%

39 days agonow

98.9%

Uptime 24h

90 of 91 checks

Tools

read from the server

1672 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 6 October 2026. No other catalogue keeps this.

18 Oct a tool changed the parameters it asks for lookup_california_code_section

6 Oct 2 tool descriptions were rewritten list_california_code_documents, lookup_california_code_section

6 Oct a tool appeared search_california_codes

GoCodebook — California Building Codes missed 3 checks this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

Settings → Connectors → Add custom connector, then paste this address

https://gocodebook.com/api/mcp

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

california

list_california_code_documents

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.

search_california_codes

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 credit per search (also when nothing is found). If the user already cites a section number, use lookup_california_code_section instead — it is free. Returns ranked excerpts with citations and links. It does NOT decide whether a project complies.

lookup

lookup_california_code_section

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 ("CRC R602.10.2.3", "CBC 1004", "§ 17.60.090") or asks what a specific section says. Returns the official text with its citation, edition and a link to the full section. It returns code text only and does not determine whether a specific project complies.

Endpoints

URL	Transport	State	Latency	Checked
https://gocodebook.com/api/mcp	streamable-http	answering	1568 ms	5 min ago

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GoCodebook — California Building Codes — questions

Answers built from our own checks of this server.

What can GoCodebook — California Building Codes do?

It exposes 3 tools, read directly from the server on our last check. Among them: list_california_code_documents, lookup_california_code_section, search_california_codes. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is GoCodebook — California Building Codes working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 1672 ms. The bar chart above shows every period we have measured.

How do I connect GoCodebook — California Building Codes?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does GoCodebook — California Building Codes need an API key?

No. GoCodebook — California Building Codes completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.