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kair-os.trade Base Contract Inspector
x402
kair-os.trade Base Contract Inspector is a paid API for AI agents from kair-os.trade, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).
Inspects a Base mainnet contract address to return bytecode fingerprint, EIP-1967 proxy storage slots, reported owner, and ERC-165 interfaces as raw on-chain evidence.
Price / call$0.005
Success—
StatusUnknown
How this service works
Inspect a Base address at a finalized block: bytecode fingerprint, EIP-1967 storage candidates, reported owner and ERC-165 interfaces. Returns raw evidence and unknowns; no security score or safety guarantee.
Output
Returns raw on-chain evidence including a bytecode fingerprint (hash/selector summary), EIP-1967 proxy storage slot candidates and their values, the reported owner address (if any), detected ERC-165 interface IDs, and any unknowns or unrecognized fields. Explicitly provides no security score or safety guarantee.
Example use cases
Proxy contract detection for DeFi integration
“I'm about to integrate with the contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — can you inspect it and tell me if it's an EIP-1967 proxy, what the implementation slot contains, and what interfaces it exposes?”
Ownership verification before token approval
“Before I approve this token contract on Base at 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb, can you check who the reported owner is and give me its bytecode fingerprint and ERC-165 interfaces?”
Unknown contract investigation
“I found this contract address 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA on Base and have no idea what it is — can you inspect it and show me the raw on-chain evidence including bytecode hash, proxy storage slots, and supported interfaces?”
Technical details
Endpoint
POSThttps://kair-os.trade/base-contract/inspect?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need raw, structured on-chain facts about a Base mainnet contract — specifically bytecode identity, proxy architecture (EIP-1967), ownership, and interface support — without needing a trust score or security audit. Prefer it over block explorers when you need machine-readable JSON output suitable for agent pipelines. Best used as a reconnaissance step before interacting with an unknown contract.
Side effects
- Address does not exist on Base mainnet — returns empty or null bytecode fields
- Address is an EOA (not a contract) — bytecode fingerprint is empty, proxy/interface fields absent
- Invalid address format — rejected by pattern validation before call
- Network or RPC timeout — call fails with a service error
- Block finalization delay — data reflects most recent finalized block, not latest pending state
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | Base mainnet address to inspect; no user RPC URL or explorer URL. |
Tags
x402
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