Plans from $29/mo. Use the web app or the hosted MCP server. Scale as you grow.
Your 137 journey starts here. Launch a single container to build your personal site or test our capabilities. It’s the fastest, easiest way to see what 137 can do for you.
For freelancers managing a handful of sites. 137 helps you keep containers organized, audited, and running smoothly.
Designed for teams and agencies. Includes tools to manage complex tracking at scale and our direct integration for Claude and Cursor.
Full-scale tracking for large organizations. Everything you need for server-side security, custom branding, and hands-on support.
Scale without jumping tiers. All add-ons are prorated on your next invoice.
Go beyond your plan's container limit. Prorated, cancel anytime.
Unlock Facebook CAPI, TikTok Events API, LinkedIn CAPI, Multi-CAPI, and PII redaction on Professional — without jumping to Enterprise.
Bring more teammates into your workspace on Professional, beyond the 3 included seats.
Browser-based dashboard with AI chat. Connect your GTM, select a container, and ask anything in natural language. No installation required.
Connect Claude Code, Claude Desktop, or Cursor to the hosted GTM agent — generate a token, paste one command, done. 129 tools and 22 slash commands in your IDE.
The Web App is a browser-based dashboard where you manage GTM through a chat interface — no installation needed. The MCP Server connects Claude Code, Claude Desktop, or Cursor to the same GTM agent — generate a token, paste one command, and you get 129 GTM tools and 22 slash commands directly in your IDE. Nothing to download or host. Professional and Enterprise plans include both.
One meaningful action: running an audit, installing a pixel, setting up consent, or cleaning up a container. Simple queries like 'list tags' or 'show variables' count as one operation each. The Starter plan's 150 ops/month is enough for actively managing 2-3 containers.
Yes. Changes take effect immediately. When you upgrade, you get prorated credit for your current billing period. When you downgrade, the new rate starts at the next billing cycle.
Server-side GTM moves tracking from the browser to your server. This improves data quality (bypasses ad blockers), site speed, and compliance. It requires a separate server container. The Enterprise plan includes full sGTM management: clients, transformations, CAPI setup for Facebook/TikTok/LinkedIn/Google Ads, and PII redaction.
Your Google OAuth tokens are encrypted with AES-256-GCM at rest. We never see your password. You can disconnect your Google account and revoke access anytime from Settings.
Yes — every signup gets a free audit, no credit card required. You can connect a container, run an audit, and inspect tags, triggers, variables, and consent setup. To install, edit, or publish changes, pick a paid plan from $29/mo (Discovery).
Add-ons layer onto any plan. Extra container slots are $15/mo each (useful on Professional when you run more than 15 client containers). The server-side GTM add-on is $199/mo and unlocks Facebook CAPI, TikTok Events API, LinkedIn CAPI, and Multi-CAPI on Professional — without upgrading to Enterprise. Extra team seats are $19/mo each on Professional. All add-ons are prorated on your next invoice and cancellable anytime.
Operations that would push you over the limit are blocked — no surprise charges. You can upgrade to a larger plan at any time with prorated credit, and your counter resets at the start of each billing cycle.
Plans from $29/mo. Cancel anytime.