{"x402Version":1,"service_version":"0.5.0","service":"Obolpay Gateway — compatible with x402™","trademark_notice":"x402™ is a trademark of LF Projects, LLC.","description":"Pay-per-call premium data for autonomous AI agents, settled on Base (USDC) via HTTP 402.","business_use_only":true,"operator":{"name":"Yanagi the First Co., Ltd.","name_ja":"株式会社ヤナギｔｈｅファースト","legal_notice":"https://pay.obolpay.xyz/legal"},"terms":{"url":"https://pay.obolpay.xyz/terms","version":"2026-09-24","sha256":"690fe2610fbbf5a46a94c4bf8eac7533724cffacc35bbef65377691bed46c125","note":"These terms (business use only) form part of the contract for any purchase made under this challenge; by paying you agree to them. sha256 is over the exact bytes served at url."},"legal":"https://pay.obolpay.xyz/legal","pricing":"https://pay.obolpay.xyz/pricing","privacy":"https://pay.obolpay.xyz/privacy","resource":{"url":"https://pay.obolpay.xyz/api/v1/protected-data","method":"GET","description":"Premium autonomous core data. One micropayment per call. ECB euro foreign exchange reference rates used in `openunit` are available free of charge from the ECB at https://www.ecb.europa.eu/stats/eurofxref/ (ECB copyright condition).","product":"Obolpay Verifiable Data Feed — openunit index + LLM-equivalence + governance benchmarks","schema_version":"1.1"},"price":{"amount":"0.01","currency":"USDC","token_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","decimals":6},"network":{"name":"base-mainnet","chain_id":8453},"recipient":"0x918BA2F1297357DFDD1F2554418B10995487Cb4D","payment":{"schemes":["exact"],"preferred_scheme":"exact","standard_exact_available":true,"domain":"pay.obolpay.xyz","smart_wallet":"EIP-1271 (isValidSignature) supported","flows":{"exact":["Standard x402 `exact` (EIP-3009 transferWithAuthorization). Advertised only while it is actually usable.","GET the resource URL -> 402 with accepts[] containing {scheme:'exact', network:'base'}.","Sign an EIP-3009 authorization for the quoted amount. EIP-712 domain: name='USD Coin', version='2', chainId=8453, verifyingContract=the USDC address above.","Re-request with the X-PAYMENT header -> the gateway settles it for you (you pay no gas) and returns 200 OK with data."]}},"docs":"https://pay.obolpay.xyz/docs","openapi":"https://pay.obolpay.xyz/openapi.json","reference_client":"https://pay.obolpay.xyz/client.py","mcp_server":"https://pay.obolpay.xyz/mcp-server.py","free_preview":"The 402 challenge includes a free 'preview' of the dataset so an agent can evaluate quality BEFORE paying.","proof_of_purchase":{"description":"Every successful 200 delivery includes a cryptographically signed 'receipt' (EIP-191) binding invoice_id, tx_hash, and a SHA-256 of the delivered data. Present it as verifiable proof of a legitimate purchase.","signer_address":"0xd50C176074fb94ED057f031C3Ebb6e2575433CA2","verify_endpoint":"https://pay.obolpay.xyz/verify-receipt"},"disproof_warranty":{"description":"If you can machine-disprove a delivered deterministic item — its archived artifact cannot be re-derived from its pinned, hash-bound source — you get an automatic 2x credit to a non-refundable, non-transferable account balance at this gateway, spendable only via X-Account-* vouchers. No human discretion in the loop: the claim is adjudicated by recomputation. One claim per invoice.","endpoint":"POST https://pay.obolpay.xyz/warranty/disprove {message, signature, item_type, refund_address}","warranted_types":["jp-business-day","ft-jp-settlement-qa","llm-backend-decision"],"multiplier":2,"archive_since":"2026-07-28","honest_limits":"covers deliveries archived since archive_since; items whose pinned source has since changed are adjudicated 'indeterminate' and escalate to the operator instead of silently refusing"},"wanted_board":{"description":"Recorded unmet demand, published. Ask for a category that doesn't exist (free 400). Slugs with a deterministic generator are auto-productized once 2+ real external requests are recorded (auto_productizable on /wanted); for the rest a producer is needed.","endpoint":"https://pay.obolpay.xyz/wanted"},"patronage":{"description":"Bundle your receipts into ONE signed proof-of-patronage certificate (only settled purchases count).","endpoint":"POST https://pay.obolpay.xyz/patronage {receipts:[…]}"},"vdp_spec":{"description":"The open Verifiable Data Product spec this catalog follows (CC-BY-4.0). /verify-receipt verifies third-party receipts too.","endpoint":"https://pay.obolpay.xyz/vdp"},"freshness_sla":{"description":"The 402 preview embeds a signed freshness attestation (EIP-191): content_sha256, generated_at, attested_at, age_seconds. Verify the data's age & integrity cryptographically before/after paying.","location":"402 response -> payment.preview.freshness","verify_endpoint":"https://pay.obolpay.xyz/verify-receipt","auto_refund":"SLA = 900s. You are not charged for data staler than that: calls paid from an existing account balance and `exact` payments are refused with HTTP 503 before any charge; an `exact` payment found stale only after settlement is refused with HTTP 503 and the amount is credited to your non-refundable, non-transferable account balance at this gateway, spendable only via X-Account-* vouchers (see response.sla_refund) (fail-closed enabled). Objective and abuse-proof: the check is elapsed seconds, nothing else."},"delta_delivery":{"description":"The dataset is an append-only feed (items have monotonic `seq`). Send header 'X-Since-Seq: <last seq you have>' to receive ONLY newer items — saves your context tokens on repeat purchases. The receipt still binds the FULL dataset hash.","start_from":"402 preview -> latest_seq","header":"X-Since-Seq"},"category_selection":{"description":"Multi-category verifiable data feed. Categories currently in the feed (generated from the live catalog, 12): `ai-trust-artifacts` — Verifiable AI provenance & supply-chain artifact pack (real examples); `ft-jp-settlement-qa` — Fine-tuning Q&A batch — JP business-day & settlement-date reasoning (vintage 2027, 158 pairs, deterministic ground truth); `govern-evidence-governed` — govern evidence bundle — governed scenario (deterministic, verified PASS by: govern-cli verify (workspace, Rust), govern-verify (open-verify, Rust), pyverify (open-verify, zero-dep Python)); `govern-evidence-stateful` — govern evidence bundle — stateful-spendcap scenario (deterministic, verified PASS by: govern-cli verify (workspace, Rust), govern-verify (open-verify, Rust), pyverify (open-verify, zero-dep Python)); `govern-verifier` — govern evidence verifier — zero-dependency offline Python implementation (Apache-2.0, full source included); `governance` — Governed-AI spending benchmark (verified run); `governed-spending-decisions` — Governed autonomous-spending decision log — 1000 intents, 0 human approvals, replay-verify PASS (deterministic, seed 42); `jp-business-day` — Japan business-day & settlement-date resolver — as of 2026-10-07 (bank/TSE calendar, T+1..T+20); `llm-backend-decision` — Local-LLM backend decision table — measured, deterministic rankings (Apple Silicon, measured 2026-06-06); `llm-equivalence` — Local-LLM backend equivalence & consistency matrix (Apple Silicon); `openunit` — openunit — population-weighted unit of account (ECB FX 2026-10-06); `x402-ecosystem` — x402 agent-economy observatory — 800 listed services (2026-10-06, daily snapshot). Data, not advice: nothing here is investment, financial, legal or tax advice. Request one with '?types=<slug>' (or header X-Query-Types). Unknown categories are refused FREE (HTTP 400, nothing charged) and recorded as unmet demand; they are auto-productized when a deterministic generator exists (see /wanted -> auto_productizable). Per-category demand is tracked (see /stats). ECB euro foreign exchange reference rates used in `openunit` are available free of charge from the ECB at https://www.ecb.europa.eu/stats/eurofxref/ (ECB copyright condition).","param":"?types=<comma-separated>","categories":[{"type":"ai-trust-artifacts","title":"Verifiable AI provenance & supply-chain artifact pack (real examples)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"ft-jp-settlement-qa","title":"Fine-tuning Q&A batch — JP business-day & settlement-date reasoning (vintage 2027, 158 pairs, deterministic ground truth)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"govern-evidence-governed","title":"govern evidence bundle — governed scenario (deterministic, verified PASS by: govern-cli verify (workspace, Rust), govern-verify (open-verify, Rust), pyverify (open-verify, zero-dep Python))","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"govern-evidence-stateful","title":"govern evidence bundle — stateful-spendcap scenario (deterministic, verified PASS by: govern-cli verify (workspace, Rust), govern-verify (open-verify, Rust), pyverify (open-verify, zero-dep Python))","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"govern-verifier","title":"govern evidence verifier — zero-dependency offline Python implementation (Apache-2.0, full source included)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"governance","title":"Governed-AI spending benchmark (verified run)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"governed-spending-decisions","title":"Governed autonomous-spending decision log — 1000 intents, 0 human approvals, replay-verify PASS (deterministic, seed 42)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"jp-business-day","title":"Japan business-day & settlement-date resolver — as of 2026-10-07 (bank/TSE calendar, T+1..T+20)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"llm-backend-decision","title":"Local-LLM backend decision table — measured, deterministic rankings (Apple Silicon, measured 2026-06-06)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"llm-equivalence","title":"Local-LLM backend equivalence & consistency matrix (Apple Silicon)","items_in_feed":1,"uses_ecb_reference_rates":false},{"type":"openunit","title":"openunit — population-weighted unit of account (ECB FX 2026-10-06)","items_in_feed":48,"uses_ecb_reference_rates":true},{"type":"x402-ecosystem","title":"x402 agent-economy observatory — 800 listed services (2026-10-06, daily snapshot)","items_in_feed":30,"uses_ecb_reference_rates":false}],"generated_from":"the items currently in the feed (content/protected_content.json); the same list the 402 returns as payment.preview.available_types","third_party_data_notices":["ECB euro foreign exchange reference rates used in `openunit` are available free of charge from the ECB at https://www.ecb.europa.eu/stats/eurofxref/ (ECB copyright condition)."]},"demand_stats":{"description":"Aggregated demand analytics — which categories agents actually pay for. `selected_product` = the market-validated most-valuable category.","endpoint":"https://pay.obolpay.xyz/stats"}}