Free, read-only Google Tag Manager: containers, tags, diffs vs live, audits. No GCP setup.
Connect Runs on your machine
claude mcp add gtm-mcp -e TAGPILOT_API_KEY=<TAGPILOT_API_KEY> -e GTM_MCP_NO_BROWSER=<GTM_MCP_NO_BROWSER> -e GTM_MCP_AUTH_WAIT_SECONDS=<GTM_MCP_AUTH_WAIT_SECONDS> -- npx -y @tagpilot/[email protected]{
"mcpServers": {
"gtm-mcp": {
"command": "npx",
"args": [
"-y",
"@tagpilot/[email protected]"
],
"env": {
"TAGPILOT_API_KEY": "<TAGPILOT_API_KEY>",
"GTM_MCP_NO_BROWSER": "<GTM_MCP_NO_BROWSER>",
"GTM_MCP_AUTH_WAIT_SECONDS": "<GTM_MCP_AUTH_WAIT_SECONDS>"
}
}
}
}{
"mcpServers": {
"gtm-mcp": {
"command": "npx",
"args": [
"-y",
"@tagpilot/[email protected]"
],
"env": {
"TAGPILOT_API_KEY": "<TAGPILOT_API_KEY>",
"GTM_MCP_NO_BROWSER": "<GTM_MCP_NO_BROWSER>",
"GTM_MCP_AUTH_WAIT_SECONDS": "<GTM_MCP_AUTH_WAIT_SECONDS>"
}
}
}
}{
"servers": {
"gtm-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@tagpilot/[email protected]"
],
"env": {
"TAGPILOT_API_KEY": "<TAGPILOT_API_KEY>",
"GTM_MCP_NO_BROWSER": "<GTM_MCP_NO_BROWSER>",
"GTM_MCP_AUTH_WAIT_SECONDS": "<GTM_MCP_AUTH_WAIT_SECONDS>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
TAGPILOT_API_KEYOptional, secret | Optional. Leave unset: the first question connects this device to your free Tag Pilot account in the browser. Set a gtm:mcp key (tpk_…) only for CI or headless setups. |
GTM_MCP_NO_BROWSEROptional | Set to 1 to only return the Google sign-in link (open it in any browser) instead of opening a browser. |
GTM_MCP_AUTH_WAIT_SECONDSOptional | How long a tool call waits for the browser sign-in before returning the link. |
Details
| Package | @tagpilot/[email protected] (NPM, stdio) |
| First published | 13 Nov 2026 |
| Last updated | 13 Nov 2026 |
| Registry name | io.github.tagpilot/gtm-mcp |
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