# GoCodebook — California Building Codes (remote · gocodebook.com)

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

- Trust score: 73/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-27

## Components

- remote · `gocodebook.com`: 73/100 (this document), [markdown](https://verifymcp.io/servers/com-gocodebook-codes/api-mcp.md), [page](https://verifymcp.io/servers/com-gocodebook-codes/api-mcp)

## Channel facts

- Endpoint: `https://gocodebook.com/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-27.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 470 tokens (~235/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the GoCodebook — California Building Codes MCP server?

GoCodebook — California Building Codes is a hosted endpoint at https://gocodebook.com/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

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

### VS Code

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

### Codex

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

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-gocodebook-codes": {
      "type": "remote",
      "url": "https://gocodebook.com/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-gocodebook-codes --url 'https://gocodebook.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-gocodebook-codes:
    url: "https://gocodebook.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-gocodebook-codes": {
      "Transport": "http",
      "Url": "https://gocodebook.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-gocodebook-codes -t streamable-http -u 'https://gocodebook.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-gocodebook-codes": {
      "type": "http",
      "url": "https://gocodebook.com/api/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-26 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-25 (score 72, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 72)

First indexed and scored.

## MCP tools (2)

### `lookup_california_code_section` (~315 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 ("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 does NOT determine whether a specific project complies — for that, send the user to the linked page.

Input parameters:

- `code_edition` (string): Optional. Which Title 24 cycle to read. California enforces the edition in force when the permit application was submitted, so a project filed in 2024 is enforced under "2022". Defaults to "current"…
- `jurisdiction` (string): Optional. A California city or county slug to scope the lookup to its own municipal code — "los-angeles", "san-jose", "marin-county". Omit for statewide Title 24 codes.
- `section` (string, required): The section number exactly as cited, without the code name. Examples: "R602.10.2.3", "1004", "507.2", "17.60.090", "11B-206".

### `list_california_code_documents` (~85 tokens)

List the California codes and local ordinances available for lookup, and state honestly what is NOT covered. Call this before telling a user a code is unavailable, and when you need the exact document slug or jurisdiction slug for a lookup.

Input parameters:

- `jurisdiction` (string): Optional. A California city or county slug — returns the documents held for that jurisdiction instead of the statewide list.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-gocodebook-codes/api-mcp#diagnostics

## Score history

- 2026-09-27: 73
- 2026-09-26: 73
- 2026-09-25: 72
- 2026-09-24: 72

## Common questions

### What is the GoCodebook — California Building Codes MCP server?

GoCodebook — California Building Codes is an MCP server listed in the public MCP registry as com.gocodebook/codes. Verbatim California Title 24 and local zoning code lookup by section number, with citations. This page covers its hosted endpoint (https://gocodebook.com/api/mcp).

### Is the GoCodebook — California Building Codes MCP server safe to use?

GoCodebook — California Building Codes scores 73 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the GoCodebook — California Building Codes MCP server expose?

GoCodebook — California Building Codes exposes 2 tools: lookup_california_code_section, list_california_code_documents. Their descriptions and schemas cost roughly 400 tokens of context every time the server is loaded.

### Does the GoCodebook — California Building Codes MCP server require authentication?

No. We connected to GoCodebook — California Building Codes without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the GoCodebook — California Building Codes MCP server still maintained?

GoCodebook — California Building Codes is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://gocodebook.com/api/mcp
- Website: https://gocodebook.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-gocodebook-codes/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-gocodebook-codes/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-gocodebook-codes/api-mcp