Tagstack reads any active GTM container — yours or anyone else's. Auditing, qualifying leads, benchmarking a competitor, recovering access. The underlying data is the same. What changes is what you do with it.
Scan a container freeMost of the work that goes into understanding a GTM setup is manual and repetitive. Tagstack reads any active container and gives you the structured output you'd spend an hour building by hand.
A GTM audit shouldn't require hours in the interface. Scan any website and get back a health score, a full tag inventory, and a ranked list of issues — sorted by impact. No access to the container needed, no manual tag-by-tag review.
Even without admin access, your GTM container is still active at its Google URL. Tagstack fetches and decodes it, then exports a valid JSON file you can reimport directly into a new container. Tags, triggers, and variables — all of it.
Tagstack scans any public site, not just yours. Check what tags a competitor runs, their estimated martech spend, whether they've implemented server-side GTM or Consent Mode V2, and how their container scores overall. Same data, any domain.
The audit is only useful if it leads somewhere. Tagstack fits into the parts of your workflow that are still manual — qualification, prospecting, and handing results to clients.
Scan their website before the discovery call. You'll see what's deployed, how the container is configured, and whether there are consent gaps or server-side opportunities — in under a minute. Walk in with a specific observation, not a generic pitch.
Feed your prospect list into the Tagstack API and filter by what matters: technology presence, consent mode status, server-side GTM, CMP vendor. The accounts with the clearest gaps and the strongest reason to reach out rise to the top.
Every saved scan has a public URL. Anyone with the link can view the full audit — no Tagstack account required. Useful as a pre-call report, a leave-behind, or a kickoff deliverable that doesn't require a 40-slide deck.
Most technology reach figures come from self-reported surveys or panel estimates. Tagstack's index is built from containers that are actually deployed — 3 million of them, 50,000+ technologies tracked.
Search for your tool in Tagstack's index and get adoption data from real GTM deployments — reach percentage, co-occurrence with complementary stacks, and a direct comparison to your competitors. Not survey data. Not estimates. Containers.
Use the Tagstack API to scan your prospect list and surface sites actively running a competing solution. Combine that with saved scans to track stack changes over time and reach out when the signal is there — not on an arbitrary cadence.
Every use case above involves a manual step at some point. The Tagstack MCP server is designed to remove it. Scan containers, run audits, and query the technology index from any MCP-compatible client — Claude, Cursor, and others. The same data, available inside whatever agentic workflow you're building.
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