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skills.onesource.io On-Chain Contract Details
x402
skills.onesource.io On-Chain Contract Details is a paid API for AI agents from skills.onesource.io, paid per call via x402, $0.005000/call, status unknown (last checked 2026-09-15).
Fetches on-chain smart contract metadata and details for a given contract address on supported EVM networks.
Price / call$0.005000
Success—
StatusUnknown
How this service works
Fetches on-chain contract details for a given contract address.
Output
Returns on-chain details for the specified smart contract address, which may include contract bytecode, ABI, deployment metadata, contract type, and chain-specific information for the requested EVM network.
Example use cases
Verify token contract authenticity
“I need to check if this address is actually the real USDC contract. Can you pull up the on-chain details for 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48 and verify it's deployed on Ethereum?”
Inspect smart contract for audit
“We're doing a security review of a contract someone sent us. Can you fetch the contract details and bytecode for 0x1f9840a85d5af5bf1d1762f925bdaddc4201f984 on Base? I want to see what we're working with.”
Find deployed contract on testnet
“I'm deploying my contract and want to verify it went live correctly. Can you pull the on-chain metadata for 0x3a0d526f5287cc915ea6fa1671d5763472a60ce9 on Sepolia and show me the deployment details?”
Technical details
Endpoint
GEThttps://skills.onesource.io/api/chain/contract/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48When to prefer
Use this endpoint when you need to inspect or verify what smart contract is deployed at a specific EVM address on Ethereum, Base, Avalanche, Sepolia, MegaETH, or MegaETH-testnet. Prefer this over generic blockchain explorers when you need programmatic, structured on-chain contract data accessible via API with per-call micropayment pricing.
Side effects
- Invalid address format (not a valid 0x-prefixed 40-hex-char address) returns a validation error
- Address is an EOA (externally owned account) with no contract code deployed
- Unsupported network name returns an enum validation error
- Contract not found on the specified network returns a not-found or empty response
- Payment failure (x402 payment not processed) blocks the request
Input
{
"network": "ethereum"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| network | string | The EVM network to query. The contract address is passed as a URL path parameter, not in the body. |
Output
{
"data": {
"name": "USD Coin",
"symbol": "USDC",
"address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"is_erc20": false,
"is_erc165": false,
"is_erc721": false,
"is_erc1155": false,
"code_length": 2187,
"is_contract": true
},
"meta": {
"endpoint": "/api/chain/contract/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"request_id": "00451b0bd7ae453b"
}
}Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object | |
| metarequired | object |
Tags
x402
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