Ethereum Mainnet eth_getCode – Contract Bytecode Lookup

x402

Ethereum Mainnet eth_getCode – Contract Bytecode Lookup is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-17).

Returns the deployed bytecode at a given Ethereum mainnet contract address using eth_getCode.

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

ARYSPHERE sells AI-written verdicts on Base token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base over x402 v2. No account and no API key.

Output

Returns a JSON object with an 'ok' boolean, a 'result' field containing the 0x-hex encoded bytecode string (empty '0x' if the address is an EOA or has no deployed code), the 'chain' identifier, the 'method' used (eth_getCode), and an 'error' field if ok is false.

Example use cases

Verify contract deployment on mainnet

“Check whether there's actually a smart contract deployed at 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum mainnet — give me the raw bytecode if there is one.”

Detect EOA vs contract address

“I have this Ethereum address 0xAbcD1234567890AbcD1234567890AbcD12345678 — can you tell me if it's a smart contract or just a regular wallet by fetching its on-chain code?”

Security audit of deployed contract code

“Pull the on-chain bytecode for the Ethereum contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D so I can analyze what's actually deployed there versus what the source says.”

Technical details

Endpoint

GEThttps://api.arysphere.com/v1/ventures/x402_eth_reads_v1/eth_mainnet_eth_getcode?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to read raw deployed bytecode from Ethereum mainnet specifically — for example, to verify a contract is live, distinguish EOAs from contracts, or retrieve on-chain code for static analysis. Prefer this over generic RPC providers when you want a pay-per-call x402-compatible endpoint with no subscription setup.

Side effects

Invalid address format (not 0x + 40 hex) returns an error response with ok: false
Address with no deployed contract returns '0x' as bytecode (not an error, but indicates EOA)
Network or RPC node unavailability returns ok: false with an error message
Payment failure (x402 protocol) prevents the call from completing
Rate limiting or gateway errors may return non-200 HTTP responses

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "hex": "0xef01005a7fc11397e9a8ad41bf10bf13f22b0a63f96f6d",
    "chain": "ethereum",
    "method": "eth_getCode",
    "result": "0xef01005a7fc11397e9a8ad41bf10bf13f22b0a63f96f6d",
    "service": "x402_eth_reads_v1.eth_mainnet_eth_getcode"
  }
}

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