know.fast
https://know.fast/v1/x402/know
x402 · HTTP eip155:8453 in catalog since Oct 24
43
of 100
Cannot be purchased right now
The server answers with 402, but the challenge is missing payTo, network and amount. An agent has nothing to sign. Failed in 1 of 1 runs since Oct 24. Price and payout address could not be verified because of this.
Availability 50
Weight 30% · 7-day uptime
Honesty 0
Weight 30% · price match
Safety 100
Weight 25% · prompt injection
Maturity 20
Weight 15% · longevity
Service Metadata
Host
Listed Price
$0.010000
Payee (Catalog)
0x45A4A9612D4d4E78703A63dC3eF36267A6c17D96
30-day Unique Payers
4 buyers
First Seen
2026-10-24
Last Diagnostic Run
2026-10-24 17:01 UTC
Discovered via
bazaar
Embed Badge
Diagnostic Runs
pass fail skipped
challenge Expected HTTP 402, got HTTP 401
price Skipped: missing catalog price or 402 payment info
payto Skipped: missing catalog payTo or 402 payment info
reach HTTP 401 · 2194 ms · raw response
Community
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For your agent
$ curl https://capkey.dev/api/v1/score?url=know.fast/v1/x402/know
{ "total": 43, "badge": "unstable",
"verdict": "cannot_be_purchased_right_now", "checked_at": "2026-10-24T17:01:06.619Z" }
{ "total": 43, "badge": "unstable",
"verdict": "cannot_be_purchased_right_now", "checked_at": "2026-10-24T17:01:06.619Z" }