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Blockscout Address Lookup
x402
Blockscout Address Lookup is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Retrieve detailed on-chain information about a specific blockchain address or smart contract by chain and address hash
Price / call$0.002
Success—
StatusUnknown
How this service works
Access to api/v2/addresses/:address_hash. Retrieve detailed information about a specific address or contract
Output
Returns a structured object containing the address type (EOA or contract), native token balance, total transaction count, contract-specific fields (verified status, name, compiler, ABI availability, creation transaction, deployer address), any associated ENS or public name tags, and token holdings summary. For contracts, additional metadata about source code verification and implementation proxy info may be included.
Example use cases
Smart contract verification check
“Check whether the address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet is a verified smart contract on Blockscout and tell me what kind of contract it is.”
Wallet activity audit
“I need to audit the wallet 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe on the Gnosis chain — fetch its transaction count, balance, and any labels Blockscout has for it.”
DeFi protocol contract inspection
“Look up the contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum using Blockscout and tell me if it's verified, who deployed it, and when.”
Technical details
Endpoint
GEThttps://api.blockscout.com/:chain_id/api/v2/addresses/:address_hash_paramWhen to prefer
Choose this endpoint when you need comprehensive on-chain metadata about a specific Ethereum-compatible address or contract across multiple EVM chains, especially when you need contract verification status, deployer info, or balance data in a single call. Prefer this over a general blockchain RPC call when you want enriched, human-readable metadata (labels, ENS, verification) that raw node calls don't provide. Ideal for agents doing due diligence on contracts, auditing wallets, or enriching address data in DeFi or security workflows.
Side effects
- Invalid or malformed address hash returns a 404 or validation error
- Unsupported or unknown chain_id returns an error or empty response
- Address exists on-chain but has no indexed data yet due to sync lag
- Rate limiting or payment failure (x402) blocks the request
- Contract not yet verified returns limited metadata with no ABI
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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