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Synapse API — opBNB NFT Sales
x402
Synapse API — opBNB 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 opBNB blockchain, filterable by contract address and block range.
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 opBNB blockchain, including transaction details such as sale price, buyer/seller addresses, token IDs, and block numbers, filtered to the specified contract address and block range and paginated by the given limit.
Example use cases
NFT collection sales analytics
“Get me all NFT sales for contract 0xDe45... on opBNB between blocks 2000000 and 2100000, limited to 100 results in descending order — I want to analyze trading volume trends.”
Real-time NFT floor price monitoring
“Fetch the 20 most recent NFT sales for the contract at 0xAbc789... on opBNB, newest first, so I can track what prices things are selling for right now.”
Historical NFT market research
“Give me NFT sales data for contract 0xFee321... on opBNB starting from block 1500000 going up to block 1600000 in ascending order, up to 200 records — I'm researching early trading activity for this collection.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/opbnb/nft/salesWhen to prefer
Use this endpoint when you specifically need NFT sales data from the opBNB (BNB Chain Layer 2) network. Prefer it over generic blockchain explorers when you need programmatic, filtered access by contract address and block range, and when pay-per-call pricing at $0.01 USDC is acceptable for on-demand queries.
Side effects
- Invalid contract address format returns an error or empty result
- fromBlock greater than toBlock yields no results or validation error
- Limit value too large may cause timeout or truncated response
- opBNB node unavailability causes upstream errors
- Block range spanning too many blocks may hit rate or data limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | |
| order | string | |
| toBlock | number | |
| fromBlock | number | |
| contractAddress | string |
Tags
x402
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