{"id":1792162,"recorded_at":"2026-11-01T19:06:52.529500Z","observed_at":"2026-11-01T19:06:52.529438Z","subject_kind":"source_record","subject":"x402_bazaar:https://2s.io/api/papers/search","kind":"listing","method":"sync.x402_bazaar/1","body":{"endpoints":[["x402","https://2s.io/api/papers/search"]],"name":"2s","owner_address":"0x2b6d4988db4723e6908db86ab2b8dfbc51fc32c5","raw":{"accepts":[{"amount":"6000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"maxTimeoutSeconds":60,"network":"eip155:8453","payTo":"0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5","scheme":"exact"},{"amount":"6000","asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"},"maxTimeoutSeconds":60,"network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","payTo":"TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn","scheme":"exact"}],"description":"Unified scientific literature search across arXiv (preprints), PubMed (biomedical), and Semantic Scholar (cross-field, with citation counts). Returns a flat array of papers with stable schema: source, sourceId, doi, title, authors, abstract, year, publishedAt, citationCount, url, pdfUrl. Partial failures surface in the errors array rather than failing the whole call. Optional filters: since (YYYY-MM-DD), sources (subset), limit (max 20 per source).","extensions":{"bazaar":{"info":{"input":{"method":"GET","queryParams":{"limit":10,"q":"example","since":"2024-01-01","sources":"example"},"type":"http"}},"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"method":{"const":"GET"},"queryParams":{"additionalProperties":false,"properties":{"limit":{"default":10,"maximum":20,"minimum":1,"type":"integer"},"q":{"maxLength":500,"minLength":1,"type":"string"},"since":{"type":"string"},"sources":{"type":"string"}},"required":["q"],"type":"object"},"type":{"const":"http"}},"required":["type","method","queryParams"],"type":"object"}},"required":["input"],"type":"object"}},"payment-identifier":{"info":{"required":false},"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"id":{"maxLength":128,"minLength":16,"pattern":"^[a-zA-Z0-9_-]+$","type":"string"},"required":{"type":"boolean"}},"required":["required"],"type":"object"}}},"iconUrl":"https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1781454341/bazaar-icons/58f7ba8f2b3b8047.png","lastUpdated":"2026-11-01T10:27:35.817Z","quality":{"l30DaysTotalCalls":41,"l30DaysUniquePayers":4,"lastCalledAt":"2026-11-01T10:27:35.567Z"},"resource":"https://2s.io/api/papers/search","serviceName":"2s","tags":["public-records","identifiers","ai-agents","us-gov-data","x402"],"type":"http","x402Version":2},"source":"x402_bazaar","summary":"Unified scientific literature search across arXiv (preprints), PubMed (biomedical), and Semantic Scholar (cross-field, with citation counts). Returns a flat array of papers with stable schema: source, sourceId, doi, title, authors, abstract, year, publishedAt, citationCount, url, pdfUrl. Partial failures surface in the errors array rather than failing the whole call. Optional filters: since (YYYY-MM-DD), sources (subset), limit (max 20 per source)."},"body_sha256":"974df53d68c6e4c6408c55dbe2560de018f36f0ab060affaa2a455783b2ee154","prev_id":60344,"leaf":"0xf98f86952e29c3867c6eb1ace5a144fdf4de005c5347f59c0b80d51b0a5d60a6","leaf_text":"{\"body\":\"974df53d68c6e4c6408c55dbe2560de018f36f0ab060affaa2a455783b2ee154\",\"id\":1792162,\"kind\":\"listing\",\"method\":\"sync.x402_bazaar/1\",\"observed_us\":1793560012529438,\"prev\":60344,\"subject\":\"x402_bazaar:https://2s.io/api/papers/search\",\"subject_kind\":\"source_record\"}","day":{"day":"2026-11-01","leaves":302406,"root":"0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3","chained":"0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4","anchor_chain":"eip155:5042002","anchor_tx":"0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90","anchor_block":70262758},"proof":["0xf98f93dfb0876babf7937ffe8ad720ad86ce513366b033fff3770b57e4a4f0d5","0xbb17c3e494bc9dff01fee2d40ca65463a0cd145b291bad291d61cdbe88c0e7a4","0xadf51fc0d929409c7b6421c42a000a4f85d6d01b7ca622caa19f3ad53feaa844","0x0e43102f08f30b527379807ef7c6dd022dccfe3da0abecd331949a579c09caf2","0x7edaebf65d96168f36a13d2d31638a1eff4541ba71e2e39a29809748b987c8fd","0x390af3d363a41a95fce7dccebc629ee623e98a0e08a31bc2568a8e7d0e0737c9","0xb516c8223549a806eb0c73dfb3492ae316e660d199051c0e67116097a9e65c83","0x373260fbda6a6110dab8ff91be8fe68dff2b4567fd80e0a7b5bf1d1c7402b697","0xdd21f5088dd972ee77cedc994d365e0ef81cfc4970f13863bf3fe67372da7030","0xbef7e8f3df7eb430f8309f9e4334711917dc142a35a776446214b4885f3dcd1b","0xa781bfa60800965194e35c25cdcb1df87ec8ccb2871281789c23a01456b80b4c","0x93a6b7f41af5d3e3bc733eed46dbda51f57a4d5a3adef140d3df24a1944c24aa","0x4ec6a6783b0fbf13d364df34dd919edbce7190c4f5424e6bc50d2f35967469a4","0x9b4eda8f413d128915df51c98c771c8ee622b35a4252b9c2a803dd51ad66d4c8","0x624db22ddd30d851957cc9d44cc5b314f300cfe0ff69cfbcfe0b2a2df8fdd12c","0x1023fddec22f7cf1aff98422f0e5714dcc4ca7df3408bb6d4550d6f770e5033a","0xf7af9137c03da92bdd37d086da37554097bcd1fce016f93f2e66d18b71970c5d"]}