TL;DR
The GTM Stacker Agent Registry (browse it here) is a registry of 380+ open-source go-to-market and RevOps tools — the registry is updated daily, so new tools land every day and the live count keeps growing; check the live number on the registry. It is designed to be read by AI agents as easily as by people: llms.txt discovery files, OpenAPI 3.1 description, an MCP server, per-entry JSON-LD, sharded sitemaps, IndexNow submission and delta-sync feeds — all generated by a zero-runtime-dependency, deterministic static build and verified by 3,400+ automated consumer checks on every build plus a unit-test suite.
The thesis
AI assistants are becoming the front door to tool discovery. Most websites fight this; an agent-native property embraces it — publishing every entry in HTML for people and in Markdown, JSON and JSON-LD for machines, with stable identifiers and explicit provenance so an AI engine can cite it with confidence.
Architecture
- Static generation with zero runtime dependencies — the whole build is auditable and rebuilds byte-identically.
- Discovery surfaces: llms.txt and llms-full.txt, RFC 9727 api-catalog, OpenAPI 3.1, Agent Skills, and an MCP server exposing search and per-entry resources.
- Structured data: JSON-LD SoftwareApplication per entry plus an Organization/founder entity graph.
- Freshness machinery: sharded sitemaps with lastmod, IndexNow submission, conditional GET, and by-date delta-sync so agents fetch only what changed.
- Governance: a schema that forces "unknown" over guesses, an explicit caveats field, and a lint pass against fabricated content.
Verification
Every build runs a consumer-simulation harness — 3,400+ checks on every build covering cold-start discovery, JSON parseability, link integrity and feed conformance — plus unit tests over the schema and content pipeline. A bad entry cannot ship.
Honest status
The architecture is complete and verified; curation is the ongoing work. A core of hand-written entries is being expanded across the bulk-imported catalogue, and the distribution plan (directories, search-console verification, syndication) is rolling out. This page will be updated as the registry accumulates citation and traffic data — claims will follow evidence, not precede it.
Browse it at gtmstacker.com/registry/ — or point your MCP client at it.
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Theo Popov runs GTM Stacker, a growth-systems practice for startups and venture programs. Previously Co-Founder & Operations Lead of an 11-location, ~$4M hospitality group bootstrapped with no outside capital, he now builds AI-native enrichment, outbound, content and reporting systems. More about Theo →