{"api":"v1","generated_at":"2026-09-15T20:53:25.585Z","licence":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/","attribution":"TOLL, with a link to the page cited"},"page":"https://tollindex.com/e/agent-arcade-use-x402atlas-com-chess-check-bd0d04","pinned_page":"https://tollindex.com/e/agent-arcade-use-x402atlas-com-chess-check-bd0d04/at/2026-09-15T16-57Z","pinned":false,"method":"https://tollindex.com/ledger/method","snapshot_at":"2026-09-15T16:57:44.360Z","snapshot_stamp":"2026-09-15T16-57Z","endpoint":{"slug":"agent-arcade-use-x402atlas-com-chess-check-bd0d04","canonical_url":"https://agent-arcade.use.x402atlas.com/chess/check","resource":"https://agent-arcade.use.x402atlas.com/chess/check","http_method":"POST","type":"http","x402_version":2,"registries":["cdp"],"primary_registry":"cdp","curated_by_coinbase":false,"description":"Chess Daily answer check — legally validates a complete UCI principal line against the pinned daily puzzle.","service_name":"Agent Arcade: Reasoning Games","declared_category":"games","declared_tags":["chess-puzzle","chess-tactics","daily-chess","fen","uci","agent-game","answer-check"],"route_template":null,"registry_updated":"2026-09-15T06:32:09.883Z"},"derived":{"note":"fields no registry supplies; TOLL derives them and marks them derived on the page","title":"chess check","category":"inference","first_observed_by_toll":"2026-09-10T19:08:24.178Z","last_observed_by_toll":"2026-09-15T16:57:44.360Z","observation_began":"2026-09-10"},"presence":{"listed_now":true,"first_absent_at":null,"delisting_confirmed_at":null,"events":[{"registry":"cdp","at":"2026-09-10T19:08:24.178Z","event":"listed"}]},"accepts":[{"registry":"cdp","ordinal":0,"network":"eip155:8453","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USD Coin","symbol":"USDC","decimals":6,"amount_display":"0.005 USDC","amount_units":0.005,"decimals_known":true,"pay_to":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","scheme":"exact"},{"registry":"cdp","ordinal":1,"network":"eip155:137","asset":"0x3c499c542cef5e3811e1192ce70d8cc03d5c3359","asset_name":"USD Coin","symbol":"USDC","decimals":6,"amount_display":"0.005 USDC","amount_units":0.005,"decimals_known":true,"pay_to":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","scheme":"exact"},{"registry":"cdp","ordinal":2,"network":"eip155:42161","asset":"0xaf88d065e77c8cc2239327c5edb3a432268e5831","asset_name":"USD Coin","symbol":"USDC","decimals":6,"amount_display":"0.005 USDC","amount_units":0.005,"decimals_known":true,"pay_to":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","scheme":"exact"}],"counters":{"observed_at":"2026-09-15T16:57:44.360Z","calls_30d":4,"unique_payers_30d":1,"last_called_at":"2026-09-15T06:32:09.755Z"},"validation":{"latest":{"observed_at":"2026-09-15T06:23:09.660Z","state":"pass","failed_checks":[],"endpoint_http_status":402,"run_id":"daily-2026-09-15"},"uptime":[{"days":7,"observed":5,"passed":5,"ratio":1},{"days":30,"observed":5,"passed":5,"ratio":1},{"days":90,"observed":5,"passed":5,"ratio":1}],"history_90d":[{"observed_at":"2026-09-15T06:23:09.660Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-15","state_changed":false},{"observed_at":"2026-09-14T05:52:54.056Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-14","state_changed":false},{"observed_at":"2026-09-13T05:45:46.280Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-13","state_changed":false},{"observed_at":"2026-09-12T08:02:58.778Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-12","state_changed":false},{"observed_at":"2026-09-11T11:59:23.692Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-11","state_changed":true}]},"seller":{"wallet":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","page":"https://tollindex.com/seller/0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","endpoints":62,"hosts":18},"reports":0,"registry_record":{"cdp":[{"tags":["chess-puzzle","chess-tactics","daily-chess","fen","uci"],"type":"http","accepts":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","tier":"standard","version":"2","merchant":"x402Atlas"},"payTo":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","extra":{"name":"USD Coin","tier":"standard","version":"2","merchant":"x402Atlas"},"payTo":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","amount":"5000","scheme":"exact","network":"eip155:137","maxTimeoutSeconds":300},{"asset":"0xaf88d065e77c8cC2239327C5EDb3A432268e5831","extra":{"name":"USD Coin","tier":"standard","version":"2","merchant":"x402Atlas"},"payTo":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","amount":"5000","scheme":"exact","network":"eip155:42161","maxTimeoutSeconds":300}],"quality":{"lastCalledAt":"2026-09-15T06:32:09.755Z","l30DaysTotalCalls":4,"l30DaysUniquePayers":1},"resource":"https://agent-arcade.use.x402atlas.com/chess/check","extensions":{"bazaar":{"info":{"input":{"body":{"date":"2026-07-01","answer":{"moves":["d1h5","h7h6","h5c5"]},"difficulty":"normal","challenge_id":"sha256:50697ebea7b2cc5947da85e12fe2069f49983c4ba3d206b09540d80733c0153a","generation_version":"v1"},"type":"http","method":"POST","bodyType":"json"},"output":{"type":"json","example":{"game":"chess","proof":{"normalized_line":["d1h5","h7h6","h5c5"]},"score":100,"valid":true,"correct":true,"feedback":{"message":"complete legal principal line","required_moves":3,"submitted_moves":3,"first_invalid_move":null},"challenge_id":"sha256:50697ebea7b2cc5947da85e12fe2069f49983c4ba3d206b09540d80733c0153a"}}},"tags":["chess-puzzle","chess-tactics","daily-chess","fen","uci","agent-game","answer-check"],"schema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["challenge_id","generation_version","date","difficulty","answer"],"properties":{"date":{"type":"string","format":"date","description":"UTC date of the referenced Chess Daily challenge."},"answer":{"type":"object","required":["moves"],"properties":{"moves":{"type":"array","items":{"type":"string","pattern":"^[a-h][1-8][a-h][1-8][qrbn]?$"},"maxItems":16,"description":"Complete Chess Daily principal line as legal UCI moves."}},"description":"Proposed Chess Daily principal line.","additionalProperties":false},"difficulty":{"enum":["normal"],"type":"string","description":"Difficulty of the referenced Chess Daily challenge."},"challenge_id":{"type":"string","pattern":"^sha256:[0-9a-f]{64}$","description":"Chess Daily challenge_id copied from the daily envelope."},"generation_version":{"enum":["v1"],"type":"string","description":"Chess Daily dataset-selection version copied from the daily envelope."}},"description":"Chess Daily answer-check request using the identity and complete UCI line for a daily puzzle.","additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["challenge_id","game","valid","correct","score","feedback"],"properties":{"game":{"enum":["chess"],"type":"string","description":"Chess Daily game identity."},"proof":{"type":"object","required":["normalized_line"],"properties":{"normalized_line":{"type":"array","items":{"type":"string"}}},"description":"Present only after a correct Chess Daily answer.","additionalProperties":false},"score":{"type":"integer","description":"Informational Chess Daily score: 100 when correct, otherwise 0."},"valid":{"type":"boolean","description":"Whether every submitted Chess Daily move is legal."},"correct":{"type":"boolean","description":"Whether the complete Chess Daily principal line matches."},"feedback":{"type":"object","required":["message","first_invalid_move","submitted_moves","required_moves"],"properties":{"message":{"type":"string"},"required_moves":{"type":"integer"},"submitted_moves":{"type":"integer"},"first_invalid_move":{"type":["integer","null"]}},"description":"Chess Daily move legality and line-length feedback.","additionalProperties":false},"challenge_id":{"type":"string","description":"Checked Chess Daily challenge identity."}},"description":"Chess Daily answer-check legality and principal-line verdict.","additionalProperties":false}}}}},"category":"games"}},"description":"Chess Daily answer check — legally validates a complete UCI principal line against the pinned daily puzzle.","lastUpdated":"2026-09-15T06:32:09.883Z","serviceName":"Agent Arcade: Reasoning Games","x402Version":2}]}}