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santyvv-data On-Chain Logs API
x402
santyvv-data On-Chain Logs API is a paid API for AI agents from x402.santyvv.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Fetches on-chain event logs from blockchain networks, paid per call in USDC via x402 with no API key required.
Price / call$0.01
Success—
StatusUnknown
How this service works
Market and on-chain data, paid per call in USDC on Base through the x402 protocol. No accounts, no API keys. Sources are public data providers; the value added here is keyless access, edge caching, multi-source fallback and normalised responses.
Output
Returns normalized on-chain event log entries from the queried blockchain, including event topics, transaction hashes, block numbers, contract addresses, and decoded log data where available. Response is edge-cached and aggregated from multiple public RPC providers for reliability.
Example use cases
Monitor DeFi protocol activity
“Fetch the latest on-chain event logs for the Uniswap V3 pool contract on Base so I can see all swap events from the last 50 blocks.”
Audit ERC-20 token transfers
“Get me the on-chain transfer event logs for the USDC contract on Base for blocks 12000000 to 12000500 — I want to see all Transfer events without setting up an API key.”
Debug smart contract events
“Can you pull the on-chain logs for my deployed contract at address 0xABC...123 on Base so I can verify that the right events were emitted in the last 10 blocks?”
Technical details
Endpoint
GEThttps://x402.santyvv.com/api/chain/logs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need on-chain event logs from an EVM-compatible chain without managing API keys or setting up accounts. Ideal for AI agents that need pay-as-you-go blockchain data access using USDC micropayments via the x402 protocol. Prefer over free-tier RPC endpoints when you need multi-source fallback, edge-cached responses, and normalized output format without rate-limit concerns tied to an account.
Side effects
- Invalid or unsupported chain identifier returns 400 error
- Payment not received or insufficient USDC results in 402 Payment Required
- No logs found for the given block range or contract returns empty result set
- Rate limiting or upstream provider unavailability returns 503 or timeout
- Malformed query parameters return schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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