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agent-api-testnet.tim1712.workers.dev evm contract-preflight
https://agent-api-testnet.tim1712.workers.dev/v1/evm/contract-preflight
answers 402
Inspect a Base smart-contract address before interacting with it. Returns deterministic bytecode hash/size, EIP-1967 implementation information, ERC-20 metadata when available, and the current chain head. Read-only and does not make safety or legitimacy claims.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base-sepolia
- Pay to
- 0x5229384BD502D85aa7EcA0A31B515E5E48d3910F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 224 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:12:48.123Z (2h ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent-api-testnet.tim1712.workers.dev%2Fv1%2Fevm%2Fcontract-preflight"