The open registry
Every other registry of this kind is closed. Hugging Face indexes only its own content, GitHub's Agent Finder is curated with no submission route, Google's is not shipped. This one takes any domain.
published means we found it on the publisher's own domain. indexed means we found it elsewhere and brought it in. Both are searchable and every result says which it is. Only what a business publishes itself counts toward its score, because we run the scoring too, and giving a business credit for something we went and fetched would be marking our own homework.
Answers about that one domain: what it has published, at what verification level, and what we hold for it. If we hold nothing, it says so and tells you how to submit it.
The index is searchable and a publisher can check their own domain against it. We do not hand out listings: an index you can page through is an index you can clone, and it is the only asset here.
Not in here?
Submitting takes one field and about ten seconds. No account, no allowlist, no charge.
What is in the index
Small, and stated plainly rather than dressed up. The index opened on 12 August 2026.
The rules
| Policy | |
|---|---|
| Open submission | Any domain, no allowlist, no account |
| Paid ranking | Never. Not offered at any price |
| Verification affects ranking | No. It is a filter, not a boost |
| Other registries | Pointers to registries we do not run are returned with every search |
The specification is explicit that a relevance score must not be read as a trust signal. Selling position would destroy the only thing that makes an index worth querying.
Use it from an agent or a script
curl -X POST https://wellknownhq.com/registry/search \
-H 'Content-Type: application/json' \
-d '{"query":{"text":"track a shipment"},"pageSize":5}'
Spec-shaped POST /search. /explore returns shape only: counts by type,
verification, provenance and category. It does not return publishers, and says so rather than
answering empty, because a list of publishers is the membership of the index and not a fact about
it. Machine-readable index metadata at /registry.json.
Also advertised via DNS SRV at _search._agents.wellknownhq.com.