UDS Toolbox MCP MCP server

A free, offline-capable MCP server providing tools for analyzing CAN traces, decoding UDS messages, ISO-TP reassembly, and DTC interpretation. It helps AI coding assistants diagnose flash failures and build UDS requests without requiring hardware or account storage.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by UDSLib

MCP endpoint (Streamable HTTP)

https://mcp.udslib.com/mcp

Vendor documentation

What you can do with it

Analyze CAN traces to find root causes of failed UDS flashes
Decode UDS messages including services, DIDs, and negative response codes
Reassemble ISO-TP data from CAN frames and report timing errors
Convert DTCs to SAE J2012 codes and explain status bits

Tools advertised by the last live check:

analyze_trace
decode_uds
build_uds_request
decode_isotp
decode_dtc
uds_reference
udslib_integration

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http uds-toolbox-mcp https://mcp.udslib.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add uds-toolbox-mcp --url https://mcp.udslib.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable uds-toolbox-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "uds-toolbox-mcp": {
      "url": "https://mcp.udslib.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "uds-toolbox-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.udslib.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start uds-toolbox-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "uds-toolbox-mcp": {
      "type": "http",
      "url": "https://mcp.udslib.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http uds-toolbox-mcp https://mcp.udslib.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "uds-toolbox-mcp": {
      "url": "https://mcp.udslib.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "uds-toolbox-mcp": {
      "serverUrl": "https://mcp.udslib.com/mcp"
    }
  }
}

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