# Synapse API — Gnosis NFT Floor Price

> Synapse API — Gnosis 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 on the Gnosis blockchain given a contract address

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/gnosis/nft/floor-price
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-gnosis-nft-floor-price-43b0193f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Kz8nLLU4jEJbG8leRbP1p

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synapse-api-gnosis-nft-floor-price-43b0193f -d '<json body>'
```

Example prompt: What's the current floor price for the NFT collection at contract address 0x1234...abcd on Gnosis Chain?

## When to prefer this

Use this endpoint when you specifically need NFT floor price data on the Gnosis (xDai) blockchain. It is distinct from general NFT APIs because it is scoped to Gnosis Chain and uses a pay-per-call x402 micropayment model, making it cost-effective for on-demand lookups without a subscription. Prefer this over general NFT aggregators when you need Gnosis-specific data quickly and cheaply.

## Known failure modes

- Invalid or non-existent contract address returns an error or empty response
- Contract address exists but has no active listings, resulting in null or zero floor price
- Gnosis network data source unavailable causing timeout or 503 error
- Payment failure via x402 protocol blocks request execution
- Rate limiting if too many calls are made in quick succession

## 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 floor price (minimum listing price) for the specified NFT collection on the Gnosis blockchain, likely including the price value and currency denomination (e.g. xDAI or relevant token).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "contractAddress": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-gnosis-nft-floor-price-43b0193f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)