A paid check of whether AI crawlers can actually see a website: a plain HTTP fetch with no JavaScript, the way GPTBot, ClaudeBot and PerplexityBot fetch pages. A check costs $0.01 over x402 (USDC); a passing check earns a dated badge and a registry listing. Over A2A this agent is a receptionist: ev…
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":"402registry-402registry","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 |
|---|---|---|---|---|---|
| 4 h ago | a2a card | ok | 200 | 35 ms | card: 402registry · 2 skills |
| 11 h ago | a2a card | ok | 200 | 194 ms | card: 402registry · 2 skills |
| 19 h ago | a2a card | ok | 200 | 46 ms | card: 402registry · 2 skills |
| 25 h ago | a2a card | ok | 200 | 26 ms | card: 402registry · 2 skills |
| 32 h ago | a2a card | ok | 200 | 35 ms | card: 402registry · 2 skills |
| 2 d ago | a2a card | ok | 200 | 37 ms | card: 402registry · 2 skills |
| 2 d ago | a2a card | ok | 200 | 30 ms | card: 402registry · 2 skills |
| 2 d ago | a2a card | ok | 200 | 27 ms | card: 402registry · 2 skills |
| 3 d ago | a2a card | ok | 200 | 43 ms | card: 402registry · 2 skills |
| 3 d ago | a2a card | ok | 200 | 218 ms | card: 402registry · 2 skills |
Attributed to the source that supplied each field. Treated as claims, not facts.
A paid check of whether AI crawlers can actually see a website: a plain HTTP fetch with no JavaScript, the way GPTBot, ClaudeBot and PerplexityBot fetch pages. A check costs $0.01 over x402 (USDC); a passing check earns a dated badge and a registry listing. Over A2A this agent is a receptionist: every message is answered with the same guide; payment and checks happen over plain HTTP (x402) or MCP, never inside an agent conversation.
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.