{"slug":"erc-20-token-allowance-api-44eb47c2","name":"ERC-20 Token Allowance API","summary":"Live ERC-20 spending allowance an owner has granted a spender: calls `allowance(owner, spender)` on the token and returns the raw amount, a decimal-formatted amount (using the token's decimals) with its symbol, and an `isUnlimited` flag for effectively-infinite approvals. Use it to audit token approvals / approval risk before signing. Reads live on-chain data with automatic endpoint fallback.","status":"live","indexable":true,"listed_since":"2026-10-25T17:53:03.166817Z","sources":[{"source":"x402_bazaar","external_id":"https://chain.openverbs.com/v1/token-allowance","owner_address":"0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a","seen_at":"2026-10-26T22:04:34.775493Z","removed_at":null}],"endpoints":[{"url":"https://chain.openverbs.com/v1/token-allowance","host":"chain.openverbs.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T07:40:35.958940Z","last_ok_at":"2026-10-26T07:40:35.958940Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"chain-openverbs-com-7028584c","name":"chain.openverbs.com"}],"payment_options":[{"endpoint_url":"https://chain.openverbs.com/v1/token-allowance","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"2000","pay_to":"0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a","observed_at":"2026-10-26T07:40:35.958940Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":3,"last_paid_at":"2026-10-08T05:37:34.683Z","reported_at":"2026-10-26T22:04:34.775493Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 16 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 1 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-27T00:07:30.643185Z"},"identity":{"endpoint_domains":["openverbs.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}