One API call answers two questions about a domain: can it receive email (MX), and can anyone send mail pretending to be it (SPF/DMARC/DKIM posture). Also flags disposable-email domains. This service is a plain REST API and an MCP server over Streamable HTTP - it is NOT an A2A JSON-RPC agent. Docs a…
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"auth-posture","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
Not distributed through a package registry we index.
| when | check | result | http | latency | detail |
|---|---|---|---|---|---|
| 5 h ago | a2a card | ok | 200 | 135 ms | card: Auth Posture · 1 skills |
| 11 h ago | a2a card | ok | 200 | 23 ms | card: Auth Posture · 1 skills |
| 18 h ago | a2a card | ok | 200 | 47 ms | card: Auth Posture · 1 skills |
| 25 h ago | a2a card | ok | 200 | 44 ms | card: Auth Posture · 1 skills |
| 31 h ago | a2a card | ok | 200 | 27 ms | card: Auth Posture · 1 skills |
| 2 d ago | a2a card | ok | 200 | 20 ms | card: Auth Posture · 1 skills |
| 2 d ago | a2a card | ok | 200 | 43 ms | card: Auth Posture · 1 skills |
| 2 d ago | a2a card | ok | 200 | 46 ms | card: Auth Posture · 1 skills |
| 2 d ago | a2a card | ok | 200 | 22 ms | card: Auth Posture · 1 skills |
| 3 d ago | a2a card | ok | 200 | 35 ms | card: Auth Posture · 1 skills |
Attributed to the source that supplied each field. Treated as claims, not facts.
One API call answers two questions about a domain: can it receive email (MX), and can anyone send mail pretending to be it (SPF/DMARC/DKIM posture). Also flags disposable-email domains. This service is a plain REST API and an MCP server over Streamable HTTP - it is NOT an A2A JSON-RPC agent. Docs at the documentationUrl.
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
Every source is kept verbatim. Field changes are logged as events.