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Free Asset Radar – Contract Profile
x402
Free Asset Radar – Contract Profile is a paid API for AI agents from free-asset-radar-x402.besenok2018.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Retrieves on-chain contract profile data for a given address on Base, including ownership, proxy detection, bytecode size, and bytecode hash.
Price / call$0.003
Success—
StatusUnknown
How this service works
Stable edge-hosted x402 utilities for autonomous agents.
Output
Returns a JSON object containing the contract owner address, proxy detection status (boolean and implementation address if applicable), the network name (e.g. 'base'), the size of the contract bytecode in bytes, a boolean indicating whether the address is a contract, and the SHA-256 hash of the bytecode.
Example use cases
Proxy contract detection for DeFi protocol
“Check if the contract at 0xAbCd...1234 on Base is a proxy contract and, if so, what's the implementation address behind it?”
Ownership verification before integration
“Who is the owner of the smart contract at 0x9876...feed on Base? I need to verify ownership before we integrate with it.”
Bytecode fingerprinting for security audit
“Get me the bytecode SHA-256 hash and size for the contract at 0xDEAD...BEEF on Base — I'm trying to fingerprint it for a security review.”
Technical details
Endpoint
GEThttps://free-asset-radar-x402.besenok2018.workers.dev/api/x402/contract-profile?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, low-cost on-chain profile of a smart contract on Base, specifically when you need proxy detection, ownership lookup, and bytecode fingerprinting in a single call. Prefer it over block explorer scraping when you need structured JSON output for automated agent workflows. Best suited for Base network contracts; not appropriate for other EVM chains unless documented otherwise.
Side effects
- Address is an EOA (externally owned account), not a contract — isContract returns false with no bytecode data
- Invalid or malformed contract address — likely returns an error or empty response
- Contract address not found on Base network — may return null fields
- Network unavailable or Cloudflare Worker timeout — HTTP 5xx response
- Missing required address parameter — likely returns a 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"owner": "0x...",
"proxy": {
"detected": true,
"implementation": "0x..."
},
"network": "base",
"codeBytes": 1234,
"isContract": true,
"bytecodeSha256": "..."
}
}Tags
x402
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