This repository contains an MCP (Model Context Protocol) server that exposes OpenCRAVAT-powered variant annotation as callable tools. It runs as a
Connect Oc MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. This repository contains an MCP (Model Context Protocol) server that exposes OpenCRAVAT-powered variant annotation as callable tools. It runs as a Cloudflare Worker (via Wrangler) and proxies requests to public OpenCRAVAT services. The oc mcp mcp server is what makes that connection.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
Claude — To connect to Claude, follow [these instructions](https://support.claude.com/en/articles/11175166-getting-started-with-custom-connectors-using-remote-ChatGPT — To connect with ChatGPT, you must enable developer mode, then add a custom app:Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Oc MCP's toolset — Claude, ChatGPT — is a fair guide to whether it matches your workflow. It is maintained by karchinlab; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Claude | To connect to Claude, follow [these instructions](https://support.claude.com/en/articles/11175166-getting-started-with-custom-connectors-using-remote-mcp). Use the URL above, and do not set up auth. No user-specific data |
| ChatGPT | To connect with ChatGPT, you must enable developer mode, then add a custom app: |
{
"mcpServers": {
"oc": {
"command": "npx",
"args": ["-y", "dependencies"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.