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store.agentexchange.work chain allowance
https://store.agentexchange.work/chain/allowance
answers 402
How much of an ERC-20 token a spender is approved to move from an owner's wallet, via allowance, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The approval read every DeFi, swap and trading agent makes before (and after) a transaction to know if an approve is needed. Live public RPC; one paid call.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.09
- Network
- base
- Pay to
- 0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 650 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-08-15T14:23:00.948Z (5d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fstore.agentexchange.work%2Fchain%2Fallowance"