{"slug":"apexfaucet-xyz-api-x402-arc-allowance-5e3832","title":"Allowance check on Arc, before an app asks for an approval","host":"apexfaucet.xyz","method":"GET","resource":"https://apexfaucet.xyz/api/x402/arc-allowance","category":"code","description":"Allowance check on Arc, before an app asks for an approval: what owner has already approved to spender for a token (default USDC; add &token=0x... for another), in tokens and USD, whether it is unlimited, the owner's balance, whether the spender is a contract and its name if it is one our own code u","price_listed":0.001,"price_asked":0.001,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":428,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:5042","eip155:56","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"discoverable":true,"method":"GET","queryParams":{"owner":"0x024b82335C29Fa5606a8ea5c1D24FC9eAD50700C","spender":"0x000000000022D473030F116dDEE9F6B43aC78BA3"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"owner":{"description":"The wallet that gave (or would give) the approval.","pattern":"^0x[0-9a-fA-F]{40}$","type":"string"},"spender":{"description":"The contract or wallet allowed to spend.","pattern":"^0x[0-9a-fA-F]{40}$","type":"string"}},"required":["owner","spender"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method","queryParams"],"type":"object"},"output":{"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-10","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.001,"price_match":true,"latency_ms":428,"error":null}],"description_full":"Allowance check on Arc, before an app asks for an approval: what owner has already approved to spender for a token (default USDC; add &token=0x... for another), in tokens and USD, whether it is unlimited, the owner's balance, whether the spender is a contract and its name if it is one our own code uses on Arc (Uniswap v4 PoolManager, UniversalRouter, Permit2, Circle Gateway Wallet, CCTP TokenMessenger, the launchpad router; never guessed), and risk signals (unlimited to an unknown contract, an…","last_updated":"2026-10-09T21:49:13.344Z","schemes":["exact"]}