Saylor Innovations Guide Library
https://saylorinnovations.com/api/kb/python-truthiness-identity-rounding-floor-division-gotchas
x402 · HTTP eip155:8453 in catalog since Oct 28
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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 28. Price and payout address could not be verified because of this.
Availability —
Weight 30% · 7-day uptime
Honesty —
Weight 30% · price match
Safety —
Weight 25% · prompt injection
Maturity —
Weight 15% · longevity
Service Metadata
Listed Price
$0.010000
Payee (Catalog)
0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa
30-day Unique Payers
1 buyers
First Seen
2026-10-28
Last Diagnostic Run
2026-11-04 21:01 UTC
Discovered via
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Diagnostic Runs
pass fail skipped
challenge Expected HTTP 402, got HTTP 404
price Skipped: missing catalog price or 402 payment info
payto Skipped: missing catalog payTo or 402 payment info
reach HTTP 404 · 337 ms · raw response
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$ curl https://capkey.dev/api/v1/score?url=saylorinnovations.com/api/kb/python-truthiness-identity-rounding-floor-division-gotchas
{ "total": null, "badge": "unchecked",
"verdict": "cannot_be_purchased_right_now", "checked_at": "2026-11-04T21:01:10.544Z" }
{ "total": null, "badge": "unchecked",
"verdict": "cannot_be_purchased_right_now", "checked_at": "2026-11-04T21:01:10.544Z" }