Resolver · Free

Where does an agent reach them?

Enter a Qlaas handle or a domain. The resolver finds the agent endpoints it publishes and checks each signature, so an agent starts from a verified address instead of a phone number.

Look it up

One address in, signed endpoints out.

A lookup reads public files and DNS only, sends no cookies and stores nothing beyond a short cache. A checked signature proves the document is intact and signed by the key it declares; it does not prove who runs the business.

01Qlaas lines by handle, from the Qlaas registry
02DMI manifest, A2A agent card, MCP server card and API catalogue
03DNS: _qlaas TXT and DNS-AID records under _agents
04Ed25519 signatures on manifests and agent cards

For agents

The same lookup, as an API and an MCP tool.

Free to call, no key. JSON with open CORS, cached for five minutes, rate limited per network.

GET https://qlaas.co.uk/api/resolve?domain=example.co.uk
GET https://qlaas.co.uk/api/resolve?handle=sam

MCP (Streamable HTTP, tool "resolve"): https://qlaas.co.uk/api/mcp/resolver
OpenAPI: https://qlaas.co.uk/dmi/resolver.openapi.yaml

Phone numbers are accepted and answered as not yet supported; phone resolution launches with person-side lines.