{"data":{"slug":"supreme-audiobooks","name":"Supreme Audiobooks","description":"A corpus of 3,029 public-domain audiobooks by 1,822 authors, with original editorial descriptions and 1,644 machine transcripts across 12 languages (ar, bg, de, en, es, fr, hi, ja, ko, pt, ru, zh). Four x402-metered endpoints: the full catalogue, per-book records, substring search over title and author, and full transcript text per book per language. The audio is public-domain LibriVox narration and is NOT sold here; it is free from us and from LibriVox. What is metered is our own work: the catalogue metadata, the editorial essays, and the transcripts and translations. Human-facing pages and search-engine crawlers are never charged. Terms: https://supremeaudiobooks.com/licensing","base_url":"https://supremeaudiobooks.com","website_url":"https://supremeaudiobooks.com","category":"Content","endpoint_count":3,"min_price_usd":0.001,"uptime_24h":100,"source":"submitted","status":"online","verified":false,"verified_until":null,"payment_ready":true,"payment_ready_until":"2026-10-17T16:09:01.434Z","last_success_at":"2026-10-10T16:09:01.434Z","consecutive_failures":0,"check_interval_minutes":15,"last_checked_at":"2026-10-10T16:09:01.434Z","created_at":"2026-08-26T10:52:41.617Z","uptime":{"24h":100,"7d":100,"30d":100,"90d":100,"coverage":{"24h":{"daysCovered":1,"checkCount":60},"7d":{"daysCovered":7,"checkCount":599},"30d":{"daysCovered":30,"checkCount":2667},"90d":{"daysCovered":46,"checkCount":4061}}},"avg_response_time_ms":301,"total_checks":2747,"networks":["BSE"],"networks_caip2":["eip155:8453"],"asset":"USDC","endpoints":[{"id":"9ca523ac-3651-4e27-b580-cf66722cace9","method":"GET","path":"/api/v1/books/a_christmas_carol","description":"Metadata for a single audiobook","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-26T10:52:41.617Z","last_seen_at":"2026-10-10T16:09:01.420Z","variable_amount":false,"min_price_usd":0.001,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"1000","price_usd":"0.0010000000","pay_to":"0x76e69B782A6ad5d0D68CB8e47C42A4c00E42B84E","max_timeout_seconds":60}]},{"id":"eeabc8e7-7008-4595-b089-b680e6d12de4","method":"GET","path":"/api/v1/catalog","description":"Complete Supreme Audiobooks catalogue as JSON","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-26T10:52:41.617Z","last_seen_at":"2026-10-10T16:09:01.405Z","variable_amount":false,"min_price_usd":0.05,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"50000","price_usd":"0.0500000000","pay_to":"0x76e69B782A6ad5d0D68CB8e47C42A4c00E42B84E","max_timeout_seconds":60}]},{"id":"a57420e0-4af1-46d9-86e1-10e0ce54542e","method":"GET","path":"/api/v1/transcripts/a_christmas_carol","description":"Full transcript text for one audiobook, one language","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-26T10:52:41.617Z","last_seen_at":"2026-10-10T16:09:01.389Z","variable_amount":false,"min_price_usd":0.01,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"0x76e69B782A6ad5d0D68CB8e47C42A4c00E42B84E","max_timeout_seconds":60}]}],"assessment":{"updated_at":"2026-10-10T16:13:04.209Z","input_hash":"91437354fcf75247ac5789e5b9fefd17cc9e285bb684ceeba9ef71b08b8cbed5","model_id":null,"prompt_version":null,"reliability":{"uptime":{"24h":100,"7d":100,"30d":100,"90d":100},"response_p95_ms":753,"avg_response_ms":301,"last_checked_at":"2026-10-10T16:09:01.434Z","consecutive_failures":0,"total_checks":2747},"compliance":{"grade":"A","passed":14,"total":14,"checks":[{"id":"payload_captured","label":"402 payload captured","pass":true},{"id":"accepts_present","label":"accepts[] array present","pass":true},{"id":"payto_recoverable","label":"payTo address recoverable","pass":true},{"id":"payto_conformant","label":"payTo at accepts[0].payTo (conformant shape)","pass":true},{"id":"payto_shape","label":"payTo is a valid on-chain address","pass":true},{"id":"price_present","label":"atomic price declared","pass":true},{"id":"price_sane","label":"atomic price in a sane range","pass":true},{"id":"asset_declared","label":"asset (token) address declared","pass":true},{"id":"network_caip2","label":"network resolves to CAIP-2","pass":true},{"id":"scheme_declared","label":"payment scheme declared","pass":true},{"id":"transport_https","label":"served over HTTPS","pass":true},{"id":"x402_version_current","label":"declares the current x402 version (2)","pass":true},{"id":"eip712_domain_extra","label":"EIP-712 domain parameters present on every EVM entry","pass":true},{"id":"version_channel_coherent","label":"x402 v2 envelope delivered in the payment-required header","pass":true}],"pay_to_source":"payTo","pay_to_location":"accept","staleness":{"probe_failing":false,"last_success_at":"2026-10-10T16:09:01.434Z","envelope_captured_at":"2026-08-26T10:53:00.391Z"}},"site":{"homepage":true,"openapi":true,"pricing":false,"llms_txt":true,"robots":true,"terms":true,"checked_at":"2026-10-10T16:13:03.686Z"},"domain":{"age_days":356,"registrar":"Spaceship, Inc.","free_host":false,"created_date":"2025-10-17T02:13:24.000Z","checked_at":"2026-10-08T14:53:03.346Z"},"economics":{"price_usd":0.001,"price_atomic":"1000","model":"tiered","category_percentile":6,"stability":1,"price_max_usd":0.05,"category_percentile_max":38,"endpoint_count":3,"distinct_price_count":3},"risk":{"level":"clean","flags":[]},"synthesis":null,"traction":{"status":"measured","volume_usd_30d":0,"tx_count_30d":0,"unique_buyers_30d":0,"last_settlement_at":null,"top_buyer_share_30d":null,"top_3_buyers_share_30d":null,"concentrated_volume":false,"trend_7d_vs_30d":null,"shared_payout":false,"shared_with":0,"measured_networks":["eip155:8453"],"first_settlement_at":null,"volume_usd_all_time":0,"tx_count_all_time":0,"median_settlement_usd_30d":null,"max_settlement_usd_30d":null,"settled_via":[],"settled_via_detail":[],"shared_with_services":[],"pro_quota_share":1,"caveat":"Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.","all_time_caveat":"All-time is floored at the start of our harvest window, not the service full history."}}},"provenance":{"license":"CC-BY-4.0","attribution_required":true,"attribution":"Data: x402-list.com (CC BY 4.0)","cite_as":"https://x402-list.com/services/supreme-audiobooks","source":"https://x402-list.com"}}