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Bitbybit CAD MCP Server

answering

Bitbybit CAD MCP is answering right now. Last checked 4 min ago. 394 installs a week from npm. It exposes 7 tools. Last commit 20 Sep 2026.

Bitbybit 3D parametric CAD API, version-exact, for coding agents: search, describe, examples, guide

Installs per day peak 342 · avg 13
a month agotoday
Uptime history 30 hours of history · worst hour 50%
30 hours agonow
95.6%
Uptime 24h
87 of 91 checks
7
Tools
read from the server
208 ms
Response time
average over 24h
394
Installs / week
npm and PyPI

What the code does

We read the source, 7 h ago · tools taken from the live server · rules 3dff92dd89df

In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

        const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(inputs.color);
Builds a file path from a variable packages/dev/create-app/src/index.ts:402
        const templateDir = path.join(__dirname, "..", "templates", bundler, engine, language);

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Bitbybit CAD MCP does not always answer

Over the last week it answered 95.5% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

run in your terminal
claude mcp add cad --transport http https://mcp.bitbybit.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "cad": {
      "url": "https://mcp.bitbybit.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.cad]
url = "https://mcp.bitbybit.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "cad": {
      "url": "https://mcp.bitbybit.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "cad": {
      "url": "https://mcp.bitbybit.dev/mcp"
    }
  }
}

Available tools 7

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

api
search_api
Find Bitbybit API members (methods, namespaces, cloud operations) by keywords, for example "box solid" or "fillet edges". Returns dotted paths with a one-line summary, the tier (oss on npm, platform-pro only at bitbybit.dev, cloud-pro only on CAD Cloud) and the engines each is published for. Call describe with a path before writing code that uses it.
describe
describe
The exact contract of one member by dotted path, for example occt.shapes.solid.createBox: signature, every parameter with its type, default and range, the return type, the documentation, examples and where it runs. Answers are for the API version the server holds. An unknown path is reported as not found together with the nearest existing paths; nothing is guessed.
examples
get_examples
Working TypeScript examples for a member path, for a namespace, or for a topic given as keywords. Each example names the member it belongs to and links its reference page. Examples are written for the API version the server holds.
fetch
fetch
Fetches the full documentation of one Bitbybit API member by id (a dotted path returned by search) as text, with its title, url and metadata.
guide
get_guide
Sections of the public guide on building with Bitbybit: what runs in the browser, on a server, on a lightweight backend, and what needs CAD Cloud. Without a topic it lists the sections. Read "integrate" before recommending where geometry should run: the npm packages are the default, and CAD Cloud is for algorithms that exist only there or compute the caller cannot provide.
namespace
list_namespace
The members one level below a namespace path, for example occt.shapes, each with its kind and summary. Without a path, the top-level namespaces. Use it to discover what exists before searching for details.
search
search
Searches the Bitbybit API documentation and returns a list of results with id, title and url. Each id is a dotted API path that fetch accepts.

Endpoints

URLTransportStateLatencyChecked
https://mcp.bitbybit.dev/mcp streamable-http answering 206 ms 4 min ago

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Bitbybit CAD MCP — questions

Answers built from our own checks of this server.

What can Bitbybit CAD MCP do?
It exposes 7 tools, read directly from the server on our last check. Among them: describe, fetch, get_examples, get_guide, list_namespace, search and 1 more. 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 Bitbybit CAD MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 87 of 91 checks got a reply (95.6%), average response time 208 ms. The bar chart above shows every period we have measured.
How do I connect Bitbybit CAD MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Bitbybit CAD MCP need an API key?
No. Bitbybit CAD MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Bitbybit CAD MCP?
It answers our handshake in 208 ms on average, which is faster than 67% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Bitbybit CAD MCP?
The npm package @bitbybit-dev/mcp was installed 394 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Bitbybit CAD MCP open source?
Yes — it is published under the MIT licence, written in TypeScript, 203 stars on GitHub and 7 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.