{"openapi":"3.1.0","info":{"title":"Foundry: x402 preflight and Base contract facts","version":"1.0.0","description":"Pay-per-call data for agents: check x402 sellers before paying them, and read Base contracts' proxy, owner and privileged powers straight from the chain.","x-guidance":"POST JSON {\"input\": \"...\"} to a /v1/<id> route, pay the x402 challenge (USDC on Base), resend."},"servers":[{"url":"https://minty-sprout.onrender.com"}],"paths":{"/v1/x402-preflight":{"post":{"operationId":"x402_preflight","summary":"x402 preflight","description":"x402 preflight: checks a paid x402 endpoint before a payment is signed. Probes it unpaid, parses the v1 body or v2 PAYMENT-REQUIRED header, lints every accepts[] option (network, canonical USDC, EIP-712 domain name/version that signatures verify against, EIP-55 payTo, zero payTo, amount, timeout, testnet, resource host) and returns ok/warn/block with reasons. Input: URL, optionally 'POST <url>'. Deterministic, no LLM.","security":[],"tags":["x402","preflight","payment","validation","lint","agent-safety"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.005"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"URL of a paid x402 endpoint, optionally prefixed with GET or POST, e.g. \"POST https://api.example.com/v1/x\""}},"required":["input"]},"example":{"input":"https://x402-preflight.nextill-pos.workers.dev/v1/preflight"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"verdict":{"enum":["ok","warn","block"]},"status":{"type":"integer"},"x402_version":{"type":["integer","null"]},"options":{"type":"array"},"issues":{"type":"array"},"latency_ms":{"type":"integer"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"x402_preflight_get","summary":"x402 preflight","description":"x402 preflight: checks a paid x402 endpoint before a payment is signed. Probes it unpaid, parses the v1 body or v2 PAYMENT-REQUIRED header, lints every accepts[] option (network, canonical USDC, EIP-712 domain name/version that signatures verify against, EIP-55 payTo, zero payTo, amount, timeout, testnet, resource host) and returns ok/warn/block with reasons. Input: URL, optionally 'POST <url>'. Deterministic, no LLM.","security":[],"tags":["x402","preflight","payment","validation","lint","agent-safety"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.005"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"verdict":{"enum":["ok","warn","block"]},"status":{"type":"integer"},"x402_version":{"type":["integer","null"]},"options":{"type":"array"},"issues":{"type":"array"},"latency_ms":{"type":"integer"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"URL of a paid x402 endpoint, optionally prefixed with GET or POST, e.g. \"POST https://api.example.com/v1/x\"","example":"https://x402-preflight.nextill-pos.workers.dev/v1/preflight"}]}},"/v1/x402-due-diligence":{"post":{"operationId":"x402_due_diligence","summary":"x402 seller due diligence","description":"x402 seller due diligence: everything in x402-preflight PLUS on-chain proof of real demand (USDC actually received by the seller's payTo in the last 24h: payments, distinct payers, volume) and a Bazaar listing-truth audit (is this URL listed, does the listed price match what it charges). Reveals dead, fake or mispriced sellers before payment.","security":[],"tags":["x402","due-diligence","seller","reputation","onchain","bazaar"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.01"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"URL of a paid x402 endpoint to investigate before paying it"}},"required":["input"]},"example":{"input":"https://x402-preflight.nextill-pos.workers.dev/v1/preflight"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"verdict":{"enum":["ok","warn","block"]},"status":{"type":"integer"},"x402_version":{"type":["integer","null"]},"options":{"type":"array"},"issues":{"type":"array"},"latency_ms":{"type":"integer"},"seller":{"type":"object"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"x402_due_diligence_get","summary":"x402 seller due diligence","description":"x402 seller due diligence: everything in x402-preflight PLUS on-chain proof of real demand (USDC actually received by the seller's payTo in the last 24h: payments, distinct payers, volume) and a Bazaar listing-truth audit (is this URL listed, does the listed price match what it charges). Reveals dead, fake or mispriced sellers before payment.","security":[],"tags":["x402","due-diligence","seller","reputation","onchain","bazaar"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.01"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"verdict":{"enum":["ok","warn","block"]},"status":{"type":"integer"},"x402_version":{"type":["integer","null"]},"options":{"type":"array"},"issues":{"type":"array"},"latency_ms":{"type":"integer"},"seller":{"type":"object"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"URL of a paid x402 endpoint to investigate before paying it","example":"https://x402-preflight.nextill-pos.workers.dev/v1/preflight"}]}},"/v1/base-contract-facts":{"post":{"operationId":"base_contract_facts","summary":"Base contract fact sheet from the chain","description":"Base contract fact sheet from the chain: is it a contract, proxy type (EIP-1967, beacon, EIP-1167 clone, ZeppelinOS) with implementation and admin, owner and whether ownership is renounced or held by a contract (multisig) or single key, privileged powers found in bytecode (mint, pause, blacklist, fee/tax setters, trading switch, tx limits, upgrade), current paused state, ERC-20 name/symbol/decimals/supply. Facts only, no verdict. Input: 0x address.","security":[],"tags":["base","smart-contract","token","security","proxy","owner","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.005"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Base contract address, 0x + 40 hex characters"}},"required":["input"]},"example":{"input":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"is_contract":{"type":"boolean"},"proxy":{"type":["object","null"]},"powers":{"type":"array"},"control":{"type":"object"},"token":{"type":"object"},"observations":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"base_contract_facts_get","summary":"Base contract fact sheet from the chain","description":"Base contract fact sheet from the chain: is it a contract, proxy type (EIP-1967, beacon, EIP-1167 clone, ZeppelinOS) with implementation and admin, owner and whether ownership is renounced or held by a contract (multisig) or single key, privileged powers found in bytecode (mint, pause, blacklist, fee/tax setters, trading switch, tx limits, upgrade), current paused state, ERC-20 name/symbol/decimals/supply. Facts only, no verdict. Input: 0x address.","security":[],"tags":["base","smart-contract","token","security","proxy","owner","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.005"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"is_contract":{"type":"boolean"},"proxy":{"type":["object","null"]},"powers":{"type":"array"},"control":{"type":"object"},"token":{"type":"object"},"observations":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Base contract address, 0x + 40 hex characters","example":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}]}},"/v1/base-contract-brief":{"post":{"operationId":"base_contract_brief","summary":"Base contract brief","description":"Base contract brief: base-contract-facts plus a plain-English explanation of who controls the contract and what they can do (mint, freeze, blacklist, change fees, upgrade the code), with things to verify. Grounded only in on-chain facts; never investment advice. Input: 0x address.","security":[],"tags":["base","smart-contract","token","security","explain","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.01"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Base contract address, 0x + 40 hex characters"}},"required":["input"]},"example":{"input":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"facts":{"type":"object","properties":{"is_contract":{"type":"boolean"},"proxy":{"type":["object","null"]},"powers":{"type":"array"},"control":{"type":"object"},"token":{"type":"object"},"observations":{"type":"array"}}},"brief":{"type":["object","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"base_contract_brief_get","summary":"Base contract brief","description":"Base contract brief: base-contract-facts plus a plain-English explanation of who controls the contract and what they can do (mint, freeze, blacklist, change fees, upgrade the code), with things to verify. Grounded only in on-chain facts; never investment advice. Input: 0x address.","security":[],"tags":["base","smart-contract","token","security","explain","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.01"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"facts":{"type":"object","properties":{"is_contract":{"type":"boolean"},"proxy":{"type":["object","null"]},"powers":{"type":"array"},"control":{"type":"object"},"token":{"type":"object"},"observations":{"type":"array"}}},"brief":{"type":["object","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Base contract address, 0x + 40 hex characters","example":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}]}},"/v1/base-token-info":{"post":{"operationId":"base_token_info","summary":"ERC-20 token info on Base mainnet from the chain","description":"ERC-20 token info on Base mainnet from the chain: name, symbol, decimals, total supply, and whether the address is a contract at all. Input: 0x token address. Deterministic, no LLM, cheapest token lookup.","security":[],"tags":["base","token","erc20","metadata","supply","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"ERC-20 token contract address on Base, 0x + 40 hex characters"}},"required":["input"]},"example":{"input":"0x532f27101965dd16442E59d40670FaF5eBB142E4"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"is_contract":{"type":"boolean"},"name":{"type":["string","null"]},"symbol":{"type":["string","null"]},"total_supply":{"type":["number","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"base_token_info_get","summary":"ERC-20 token info on Base mainnet from the chain","description":"ERC-20 token info on Base mainnet from the chain: name, symbol, decimals, total supply, and whether the address is a contract at all. Input: 0x token address. Deterministic, no LLM, cheapest token lookup.","security":[],"tags":["base","token","erc20","metadata","supply","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"is_contract":{"type":"boolean"},"name":{"type":["string","null"]},"symbol":{"type":["string","null"]},"total_supply":{"type":["number","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"ERC-20 token contract address on Base, 0x + 40 hex characters","example":"0x532f27101965dd16442E59d40670FaF5eBB142E4"}]}},"/v1/base-tx-explain":{"post":{"operationId":"base_tx_explain","summary":"Base transaction explained from the chain","description":"Base transaction explained from the chain: success or reverted, block and time, from, to, ETH value, method selector, gas used and fee, contract created, and every ERC-20 transfer decoded with token symbol and amount. Input: 0x transaction hash. Deterministic, no LLM.","security":[],"tags":["base","transaction","decode","transfers","explain","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.002"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Base transaction hash, 0x + 64 hex characters"}},"required":["input"]},"example":{"input":"0x920b38d85c8dccaa06e1dae783f057feebd571260aefb7f055a04c60b708df1f"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"status":{"enum":["success","reverted","pending"]},"token_transfers":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"base_tx_explain_get","summary":"Base transaction explained from the chain","description":"Base transaction explained from the chain: success or reverted, block and time, from, to, ETH value, method selector, gas used and fee, contract created, and every ERC-20 transfer decoded with token symbol and amount. Input: 0x transaction hash. Deterministic, no LLM.","security":[],"tags":["base","transaction","decode","transfers","explain","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.002"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"status":{"enum":["success","reverted","pending"]},"token_transfers":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Base transaction hash, 0x + 64 hex characters","example":"0x920b38d85c8dccaa06e1dae783f057feebd571260aefb7f055a04c60b708df1f"}]}},"/v1/base-address-info":{"post":{"operationId":"base_address_info","summary":"Base address lookup from the chain","description":"Base address lookup from the chain: wallet (EOA) or contract, bytecode size, ETH balance, USDC balance and number of transactions sent. Useful before sending funds or paying an address. Input: 0x address. Deterministic, no LLM.","security":[],"tags":["base","wallet","address","balance","usdc","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Base wallet or contract address, 0x + 40 hex characters"}},"required":["input"]},"example":{"input":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"kind":{"type":"string"},"eth_balance":{"type":"number"},"usdc_balance":{"type":["number","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"base_address_info_get","summary":"Base address lookup from the chain","description":"Base address lookup from the chain: wallet (EOA) or contract, bytecode size, ETH balance, USDC balance and number of transactions sent. Useful before sending funds or paying an address. Input: 0x address. Deterministic, no LLM.","security":[],"tags":["base","wallet","address","balance","usdc","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"kind":{"type":"string"},"eth_balance":{"type":"number"},"usdc_balance":{"type":["number","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Base wallet or contract address, 0x + 40 hex characters","example":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}]}},"/v1/base-gas":{"post":{"operationId":"base_gas","summary":"Current Base mainnet gas","description":"Current Base mainnet gas: latest block, base fee and priority fee in gwei, a suggested max fee, and the ETH cost of a typical USDC transfer. Input: any text, e.g. 'base'. Deterministic, no LLM.","security":[],"tags":["base","gas","fees","gwei","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Any text, e.g. \"base\" (the call takes no real input)"}},"required":["input"]},"example":{"input":"base"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"base_fee_gwei":{"type":"number"},"priority_fee_gwei":{"type":"number"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"base_gas_get","summary":"Current Base mainnet gas","description":"Current Base mainnet gas: latest block, base fee and priority fee in gwei, a suggested max fee, and the ETH cost of a typical USDC transfer. Input: any text, e.g. 'base'. Deterministic, no LLM.","security":[],"tags":["base","gas","fees","gwei","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"base_fee_gwei":{"type":"number"},"priority_fee_gwei":{"type":"number"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Any text, e.g. \"base\" (the call takes no real input)","example":"base"}]}},"/v1/x402-seller-revenue":{"post":{"operationId":"x402_seller_revenue","summary":"Real x402 demand from the chain","description":"Real x402 demand from the chain: USDC an address (e.g. a seller's payTo) received on Base in the last 24 hours, with payment count, distinct payers, total, and top payers with the largest payer's share (a high share suggests self-testing or wash volume). Input: 0x address. Deterministic, no LLM.","security":[],"tags":["x402","revenue","analytics","seller","demand","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.003"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Address that receives x402 payments (a seller's payTo), 0x + 40 hex characters"}},"required":["input"]},"example":{"input":"0xB3cDDccEe6B150c8efFD55B961afc0Ecefe7f247"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"payments":{"type":"integer"},"distinct_payers":{"type":"integer"},"usdc_received":{"type":"number"},"top_payer_share":{"type":["number","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"x402_seller_revenue_get","summary":"Real x402 demand from the chain","description":"Real x402 demand from the chain: USDC an address (e.g. a seller's payTo) received on Base in the last 24 hours, with payment count, distinct payers, total, and top payers with the largest payer's share (a high share suggests self-testing or wash volume). Input: 0x address. Deterministic, no LLM.","security":[],"tags":["x402","revenue","analytics","seller","demand","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.003"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"payments":{"type":"integer"},"distinct_payers":{"type":"integer"},"usdc_received":{"type":"number"},"top_payer_share":{"type":["number","null"]}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Address that receives x402 payments (a seller's payTo), 0x + 40 hex characters","example":"0xB3cDDccEe6B150c8efFD55B961afc0Ecefe7f247"}]}},"/v1/x402-listing-doctor":{"post":{"operationId":"x402_listing_doctor","summary":"x402 listing doctor for sellers","description":"x402 listing doctor for sellers: why a paid endpoint gets no buyers. Runs the x402 preflight, Coinbase's CDP validator, and presence checks in the CDP Bazaar and 402index, then returns concrete fixes: 402 before input validation, Bazaar metadata, description over 500 chars or instruction-like, slow or sleeping host, no settled sale yet. Input: endpoint URL, optionally 'POST <url>'. Deterministic, no LLM.","security":[],"tags":["x402","seller","bazaar","listing","discovery","debug","seo"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.005"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"URL of your paid x402 endpoint, optionally prefixed with GET or POST"}},"required":["input"]},"example":{"input":"https://x402-preflight.nextill-pos.workers.dev/v1/preflight"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"verdict":{"enum":["ok","warn","block"]},"fixes":{"type":"array","items":{"type":"string"}},"listed":{"type":"object"},"cdp_validation":{"type":"object"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"x402_listing_doctor_get","summary":"x402 listing doctor for sellers","description":"x402 listing doctor for sellers: why a paid endpoint gets no buyers. Runs the x402 preflight, Coinbase's CDP validator, and presence checks in the CDP Bazaar and 402index, then returns concrete fixes: 402 before input validation, Bazaar metadata, description over 500 chars or instruction-like, slow or sleeping host, no settled sale yet. Input: endpoint URL, optionally 'POST <url>'. Deterministic, no LLM.","security":[],"tags":["x402","seller","bazaar","listing","discovery","debug","seo"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.005"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"verdict":{"enum":["ok","warn","block"]},"fixes":{"type":"array","items":{"type":"string"}},"listed":{"type":"object"},"cdp_validation":{"type":"object"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"URL of your paid x402 endpoint, optionally prefixed with GET or POST","example":"https://x402-preflight.nextill-pos.workers.dev/v1/preflight"}]}},"/v1/x402-market-scan":{"post":{"operationId":"x402_market_scan","summary":"x402 market scan","description":"x402 market scan: for a topic, the top CDP Bazaar listings and who actually gets paid, measured on-chain: each seller's USDC received in the last 24 hours, payments and distinct payers, plus how many sellers earned nothing and the median price. Real demand before you build. Input: a topic, e.g. 'token security'. No LLM.","security":[],"tags":["x402","market","research","demand","analytics","bazaar"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.01"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Topic to scan in the x402 Bazaar, e.g. 'token security' or 'crypto price'"}},"required":["input"]},"example":{"input":"token security"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"listings":{"type":"integer"},"sellers_with_no_revenue_24h":{"type":"integer"},"median_price_usd":{"type":["number","null"]},"results":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"x402_market_scan_get","summary":"x402 market scan","description":"x402 market scan: for a topic, the top CDP Bazaar listings and who actually gets paid, measured on-chain: each seller's USDC received in the last 24 hours, payments and distinct payers, plus how many sellers earned nothing and the median price. Real demand before you build. Input: a topic, e.g. 'token security'. No LLM.","security":[],"tags":["x402","market","research","demand","analytics","bazaar"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.01"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"listings":{"type":"integer"},"sellers_with_no_revenue_24h":{"type":"integer"},"median_price_usd":{"type":["number","null"]},"results":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Topic to scan in the x402 Bazaar, e.g. 'token security' or 'crypto price'","example":"token security"}]}},"/v1/x402-market-report":{"post":{"operationId":"x402_market_report","summary":"Daily x402 market report, measured on-chain","description":"Daily x402 market report, measured on-chain: across 16 Bazaar topics, 80+ sellers, who earns (distinct payers, payments, USDC in 24 h), how many earn nothing, listing price bands, total USDC, distinct buyers and the biggest buying wallets. Refreshed hourly. Input: any text, e.g. 'today'. No LLM.","security":[],"tags":["x402","market","report","analytics","intelligence","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.1"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Any text, e.g. \"today\" (the report covers the whole market)"}},"required":["input"]},"example":{"input":"today"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"sellers":{"type":"integer"},"sellers_with_no_revenue":{"type":"integer"},"total_usdc":{"type":"number"},"top_sellers":{"type":"array"},"listing_price_bands":{"type":"object"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"x402_market_report_get","summary":"Daily x402 market report, measured on-chain","description":"Daily x402 market report, measured on-chain: across 16 Bazaar topics, 80+ sellers, who earns (distinct payers, payments, USDC in 24 h), how many earn nothing, listing price bands, total USDC, distinct buyers and the biggest buying wallets. Refreshed hourly. Input: any text, e.g. 'today'. No LLM.","security":[],"tags":["x402","market","report","analytics","intelligence","onchain"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.1"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"sellers":{"type":"integer"},"sellers_with_no_revenue":{"type":"integer"},"total_usdc":{"type":"number"},"top_sellers":{"type":"array"},"listing_price_bands":{"type":"object"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Any text, e.g. \"today\" (the report covers the whole market)","example":"today"}]}},"/v1/time-now":{"post":{"operationId":"time_now","summary":"Current time in any timezone","description":"Current time in any timezone: ISO time, unix timestamp, UTC offset, weekday. Input: IANA timezone, e.g. 'Europe/London'.","security":[],"tags":["time","timezone","clock","date","utility"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"IANA timezone name, e.g. 'Europe/London' or 'Asia/Karachi'"}},"required":["input"]},"example":{"input":"Europe/London"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"iso":{"type":"string"},"unix":{"type":"integer"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"time_now_get","summary":"Current time in any timezone","description":"Current time in any timezone: ISO time, unix timestamp, UTC offset, weekday. Input: IANA timezone, e.g. 'Europe/London'.","security":[],"tags":["time","timezone","clock","date","utility"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"iso":{"type":"string"},"unix":{"type":"integer"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"IANA timezone name, e.g. 'Europe/London' or 'Asia/Karachi'","example":"Europe/London"}]}},"/v1/dev-joke":{"post":{"operationId":"dev_joke","summary":"Programming joke","description":"Programming joke: one short, safe-for-work developer joke per call. Input: any text.","security":[],"tags":["joke","humor","fun","programming","developer"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Any text, e.g. 'any'"}},"required":["input"]},"example":{"input":"any"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"joke":{"type":"string"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"dev_joke_get","summary":"Programming joke","description":"Programming joke: one short, safe-for-work developer joke per call. Input: any text.","security":[],"tags":["joke","humor","fun","programming","developer"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"joke":{"type":"string"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Any text, e.g. 'any'","example":"any"}]}},"/v1/dns-lookup":{"post":{"operationId":"dns_lookup","summary":"DNS lookup","description":"DNS lookup: A, AAAA, MX, TXT, NS, CNAME, SOA or CAA records for a domain, via DNS-over-HTTPS. Input: 'example.com MX'.","security":[],"tags":["dns","domain","mx","txt","network","lookup"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Domain, optionally followed by a record type, e.g. 'example.com TXT'"}},"required":["input"]},"example":{"input":"example.com MX"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"records":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"dns_lookup_get","summary":"DNS lookup","description":"DNS lookup: A, AAAA, MX, TXT, NS, CNAME, SOA or CAA records for a domain, via DNS-over-HTTPS. Input: 'example.com MX'.","security":[],"tags":["dns","domain","mx","txt","network","lookup"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"records":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Domain, optionally followed by a record type, e.g. 'example.com TXT'","example":"example.com MX"}]}},"/v1/email-validate":{"post":{"operationId":"email_validate","summary":"Email validation","description":"Email validation: syntax, MX records, disposable domain and role account checks. Input: an email address.","security":[],"tags":["email","validation","verify","mx","disposable"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"An email address"}},"required":["input"]},"example":{"input":"someone@example.com"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"valid_syntax":{"type":"boolean"},"has_mx":{"type":"boolean"},"deliverable_guess":{"type":"boolean"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"email_validate_get","summary":"Email validation","description":"Email validation: syntax, MX records, disposable domain and role account checks. Input: an email address.","security":[],"tags":["email","validation","verify","mx","disposable"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"valid_syntax":{"type":"boolean"},"has_mx":{"type":"boolean"},"deliverable_guess":{"type":"boolean"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"An email address","example":"someone@example.com"}]}},"/v1/crypto-price":{"post":{"operationId":"crypto_price","summary":"Crypto price in USD for up to 20 coins (BTC, ETH, SOL...) or tokens by chain","description":"Crypto price in USD for up to 20 coins (BTC, ETH, SOL...) or tokens by chain:address, from DefiLlama. Input: 'BTC,ETH'.","security":[],"tags":["crypto","price","bitcoin","ethereum","token","market"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"input":{"type":"string","minLength":1,"maxLength":8000,"description":"Comma-separated symbols (BTC,ETH) or chain:address (base:0x...)"}},"required":["input"]},"example":{"input":"BTC,ETH"}}}},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"prices":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}}},"get":{"operationId":"crypto_price_get","summary":"Crypto price in USD for up to 20 coins (BTC, ETH, SOL...) or tokens by chain","description":"Crypto price in USD for up to 20 coins (BTC, ETH, SOL...) or tokens by chain:address, from DefiLlama. Input: 'BTC,ETH'.","security":[],"tags":["crypto","price","bitcoin","ethereum","token","market"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object","properties":{"prices":{"type":"array"}}},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"Comma-separated symbols (BTC,ETH) or chain:address (base:0x...)","example":"BTC,ETH"}]}},"/v1/quote":{"post":{"operationId":"quote","summary":"Quote","description":"Quote: a short public-domain quote with its author (Franklin, Seneca, Curie, Newton...). 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Input: a topic word or 'any'.","security":[],"tags":["quote","quotes","inspiration","wisdom"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.001"},"protocols":[{"x402":{}}]},"responses":{"200":{"description":"Result plus payment receipt","content":{"application/json":{"schema":{"type":"object","properties":{"output":{"type":"object"},"receipt":{"type":"object"}}}}}},"402":{"description":"Payment Required (x402 challenge in the PAYMENT-REQUIRED header)"},"400":{"description":"Bad input: missing or invalid 'input' (not charged)"},"429":{"description":"Rate limited: 30 calls per minute per payer"},"502":{"description":"Job failed upstream; the payment is not settled, so nothing is charged"}},"parameters":[{"name":"input","in":"query","required":true,"schema":{"type":"string","minLength":1},"description":"A topic word, e.g. 'knowledge', or 'any'","example":"any"}]}},"/v1/word-count":{"post":{"operationId":"word_count","summary":"Word count and text statistics","description":"Word count and text statistics: words, characters, sentences, paragraphs, reading time, top words. 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