A ServiceTitan MCP server, so Claude can work with your ServiceTitan data

Status: no official server yet

Authentication

Requests go to https://api.servicetitan.io/{module}/v2/tenant/{tenantId}/....

The server gets a token with OAuth 2.0 client credentials at https://auth.servicetitan.io/connect/token and sends an ST-App-Key header on every request.

Honest limits

• An app has to be registered in the ServiceTitan developer portal to get the app key, and your tenant has to grant it access. Plan for that step before the build starts.
• The tools can only reach the modules and data your app is granted.

How you’d connect it

The server runs two ways: locally over stdio, started with npx, or remotely over Streamable HTTP at a URL on your own host. The commands below use placeholders; your README has the real package name, URL and variables. NOLU does not run a shared hosted ServiceTitan server.

Claude Code

# remote (Streamable HTTP)
claude mcp add --transport http servicetitan https://<your-host>/mcp

# local (stdio)
claude mcp add servicetitan -e ST_CLIENT_ID=<value> -e ST_CLIENT_SECRET=<value> -e ST_APP_KEY=<value> -e ST_TENANT_ID=<value> -- npx -y <your-server-package>

Claude Desktop

For a remote server, add the URL https://<your-host>/mcp as a custom connector. For a local server, add it to claude_desktop_config.json:

{
  "mcpServers": {
    "servicetitan": {
      "command": "npx",
      "args": ["-y", "<your-server-package>"],
      "env": {
        "ST_CLIENT_ID": "<value>",
        "ST_CLIENT_SECRET": "<value>",
        "ST_APP_KEY": "<value>",
        "ST_TENANT_ID": "<value>"
      }
    }
  }
}

Cursor

In .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):

{
  "mcpServers": {
    "servicetitan": { "url": "https://<your-host>/mcp" }
  }
}

Variable names above are examples. Keep credentials in local config or your host’s secret store, never in the repository.

Who it is for

• ServiceTitan customers (HVAC, plumbing and electrical contractors) who want Claude to work with their own ServiceTitan account, using their own credentials.
• ServiceTitan itself, if it wants an MCP server built around its API for its customers. That usually means the Standard tier, with OAuth so each user signs in with their own account.

Questions