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Synapse API — Worldchain NFT Sales
x402
Synapse API — Worldchain NFT Sales is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Retrieves NFT sales transaction data from the World Chain blockchain, filterable by block range and contract address.
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
Returns a list of NFT sales events from the World Chain blockchain, including transaction details such as token IDs, sale prices, buyer/seller addresses, and block numbers, filtered by the specified contract address and block range, up to the requested limit and in the specified sort order.
Example use cases
NFT collection sales audit
“Get me the 100 most recent NFT sales for contract 0xDEADBEEF on World Chain, ordered descending, so I can audit trading activity over the last week.”
Historical sales range analysis
“Fetch all NFT sales on World Chain between blocks 2000000 and 2100000 for contract 0x1234ABCD, ordered ascending, so I can chart sales volume over time.”
Real-time NFT market monitoring
“Show me the 25 latest NFT sales on World Chain for contract 0x9876CAFE in descending block order so I can track what's selling right now.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/worldchain/nft/salesWhen to prefer
Choose this endpoint when you specifically need NFT sales data from the World Chain (Worldcoin L2) blockchain. It is the right choice for querying on-chain NFT trade events by block range or contract address with pay-per-call pricing, avoiding subscription overhead. Use it over generic blockchain explorers when you need structured, programmatic access to World Chain NFT sales.
Side effects
- Invalid contract address format returns an error
- fromBlock greater than toBlock results in empty or error response
- Block range too large may cause timeouts or truncated results
- Non-existent contract address returns empty sales list
- Invalid order enum value (not 'asc' or 'desc') causes validation error
- Payment failure (insufficient USDC) blocks the request with 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | |
| order | string | |
| toBlock | number | |
| fromBlock | number | |
| contractAddress | string |
Tags
x402
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