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Synapse API — opBNB NFT Floor Price
x402
Synapse API — opBNB NFT Floor Price 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 2026-10-16).
Returns the current floor price for an NFT collection on the opBNB blockchain given a 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 the current floor price for the specified NFT collection on the opBNB network, typically including the lowest listed price in native token denomination and possibly USD equivalent, sourced from on-chain or marketplace data.
Example use cases
NFT investment research on opBNB
“Can you look up the floor price for the NFT collection at contract 0x1234567890abcdef1234567890abcdef12345678 on opBNB? I'm thinking about buying in.”
Portfolio floor price tracker
“What's the current floor price for my opBNB NFT collection at address 0xabcdef1234567890abcdef1234567890abcdef12? I want to know if it's gone up since last week.”
NFT arbitrage opportunity scanner
“Check the floor price for the NFT contract 0x9876543210fedcba9876543210fedcba98765432 on opBNB — I'm comparing it against what it's listed for on secondary markets.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/opbnb/nft/floor-price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need NFT floor price data on the opBNB blockchain (BNB Chain's Layer 2). It is priced at $0.01 USDC per call via x402, making it cost-effective for spot checks. Prefer this over generic NFT APIs when opBNB-specific data is required, as general NFT APIs may not index opBNB collections.
Side effects
- Invalid or malformed contract address returns an error
- Contract address not found on opBNB network returns a not-found or null response
- No active listings for the collection may result in null or zero floor price
- Network congestion or RPC failures may cause timeouts
- Vercel cold start may add latency on first call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contractAddress | string |
Tags
x402
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