{"slug":"webbersites-x402-data-api-b86897b6","name":"WebberSites x402 Data API","summary":"WCAG contrast ratio between two colors — the check the URL-based a11y endpoint can't do. Give a foreground and background color (hex or rgb()); returns the exact ratio and AA/AAA pass/fail for normal text, large text, and UI components, with a plain-English verdict. ?fg=&bg=","status":"live","indexable":true,"listed_since":"2026-10-25T17:51:08.864153Z","sources":[{"source":"x402_bazaar","external_id":"https://api.webbersites.com/api/a11y/contrast","owner_address":"0xdd5fcea81ca6f1eb39fed5b973de794293b81ba6","seen_at":"2026-10-26T05:59:21.476989Z","removed_at":null}],"endpoints":[{"url":"https://api.webbersites.com/api/a11y/contrast","host":"api.webbersites.com","protocol":"x402","state":"live","last_probe_at":"2026-10-25T22:51:44.632163Z","last_ok_at":"2026-10-25T22:51:44.632163Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-webbersites-com-24aaa077","name":"api.webbersites.com"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":3,"paid_calls_30d":3,"last_paid_at":"2026-10-25T22:04:06.517Z","reported_at":"2026-10-26T05:59:21.476989Z"},"notice":"Not affiliated with addrbook — claim or request removal."}