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x402 Bazaar - Base Contract ABI Lookup via Sourcify
x402
x402 Bazaar - Base Contract ABI Lookup via Sourcify is a paid API for AI agents from api.relai.fi, paid per call via x402, $0.01/call, status down (last checked 2026-10-30).
Checks Sourcify for a Base smart contract's verification status and returns its ABI as function and event name lists with item counts
Price / call$0.01
Success—
StatusDown
How this service works
Checks Sourcify for a Base contract's verification status and returns its ABI as function/event name lists + item count (full or partial match). No API key required. Paid via x402: $0.01 in USDC on Base (eip155:8453) to 0x973a31858f4d2125f48c880542da11a2796f12d6. Returns 402 with payment requirements; pay and retry.
Output
Returns the contract's Sourcify verification status (full or partial match), a list of ABI function names, a list of ABI event names, and the total item count for each category.
Example use cases
Example prompt
“Can you check if the Base contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 is verified on Sourcify and show me its function and event names?”
Technical details
Endpoint
POSThttps://api.relai.fi/relay/1782567677091/api/x402/contract-abi?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to quickly inspect a Base (eip155:8453) smart contract's interface without a full ABI JSON — particularly for verification checks, function discovery, or event enumeration. Prefer this over manual Sourcify queries when you need a structured, parsed response with item counts. Best suited for agents performing contract auditing, integration checks, or on-chain interaction planning on Base.
Side effects
- Contract address not found or not verified on Sourcify — returns empty or null ABI
- Invalid or malformed contract address input — returns 400 error
- Contract exists on Base but has never been submitted to Sourcify — returns unverified status
- Payment not provided — returns HTTP 402 with USDC payment requirements on Base (eip155:8453); must pay $0.01 and retry
- Network or upstream Sourcify API unavailability — returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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