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Synapse API — Ethereum NFT Floor Price
x402
Synapse API — Ethereum 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 2026-10-17).
Returns the current floor price for an Ethereum NFT collection 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 Ethereum NFT collection, typically expressed in ETH, allowing agents to assess the minimum cost to acquire an NFT from that contract.
Example use cases
NFT investment research before buying
“What's the floor price right now for the Ethereum NFT contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D? I'm thinking about buying in.”
Portfolio valuation floor check
“Can you look up the floor prices for these two NFT contracts on Ethereum — 0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB and 0x60E4d786628Fea6478F785A6d7e704777c86a7c6 — so I can estimate my portfolio's minimum value?”
Automated floor price alert trigger
“Check the floor price for Ethereum NFT contract 0x8a90CAb2b38dba80c64b7734e58Ee1dB38B8992e and let me know if it has dropped below 0.5 ETH.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/ethereum/nft/floor-price?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, pay-per-call lookup of an Ethereum NFT collection's floor price by contract address, especially in agent workflows that require real-time or near-real-time pricing data without a long-term subscription commitment. Prefer it for lightweight, one-off queries where you already know the contract address.
Side effects
- Invalid or malformed contract address returns an error
- Contract address is not an NFT collection (e.g. ERC-20 token) may return no data or error
- Collection has zero listings, resulting in no floor price available
- Rate limiting or payment failure via x402 protocol
- Downstream NFT marketplace data source unavailable or stale
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contractAddress | string |
Tags
x402
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