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Synapse API — Arbitrum NFT Floor Price
x402
Synapse API — Arbitrum 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 2026-09-14).
Returns the current floor price for an NFT collection deployed on the Arbitrum blockchain given its 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
The endpoint returns the current floor price of the specified NFT collection on Arbitrum, typically including the price value and its denomination (e.g., ETH or USDC), allowing agents to assess the minimum buy-in for an NFT collection on that network.
Example use cases
NFT portfolio floor price check
“Can you look up the current floor price for the Arbitrum NFT collection at contract address 0x5f4ec3df9cbd43714fe2740f5e3616155c5b8419? I want to know how much the cheapest one is going for right now.”
Arbitrage opportunity detection
“Check the floor price for the NFT contract 0xabcdef1234567890abcdef1234567890abcdef12 on Arbitrum — I'm comparing it against the same collection on other chains to spot any pricing gaps.”
NFT price alert baseline
“I want to set up a price alert for my Arbitrum NFT collection — first, grab the current floor price for contract 0x1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b so I have a baseline to watch against.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/arbitrum/nft/floor-priceWhen to prefer
Use this endpoint when you need fast, pay-per-call floor price lookups specifically for NFT collections on the Arbitrum network without managing your own blockchain node or indexing infrastructure. Prefer it for lightweight, on-demand queries where you need current market pricing for a single contract rather than historical analytics or multi-chain aggregation in a single call.
Side effects
- Invalid or non-existent contract address returns an error or empty result
- Contract exists on a different chain and is not found on Arbitrum
- NFT collection has no active listings, resulting in null or zero floor price
- Network or RPC timeout causing delayed or failed response
- Malformed contract address format causes a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contractAddress | string |
Tags
x402
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