# Synapse API — Linea NFT Sales

> Synapse API — Linea 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 2026-09-13).

Retrieves NFT sales events on the Linea blockchain, optionally filtered by contract address and block range.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/linea/nft/sales
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-linea-nft-sales-727aee38
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BWWEDQZ9gss0WhHC5v1He

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-linea-nft-sales-727aee38 -d '<json body>'
```

Example prompt: Pull the last 50 NFT sales on Linea for the contract address 0xAbC123... sorted in descending order and show me what sold recently.

## When to prefer this

Use this endpoint when you need on-chain NFT sales data specifically from the Linea blockchain, with pay-per-call pricing via x402 (no subscription required). Prefer this over general NFT data aggregators when you need raw, filtered, block-level sales events for a specific contract or time window on Linea.

## Known failure modes

- Invalid contract address format returns a validation error
- fromBlock greater than toBlock returns an empty result or error
- Requesting too large a block range may time out or return partial data
- Unavailable or non-existent contract address returns empty results
- Network or RPC errors on Linea may cause intermittent failures

## 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

A list of NFT sale events on the Linea blockchain, each containing details such as token IDs, sale prices, buyer/seller addresses, transaction hashes, and block numbers, filtered according to the provided contract address and block range parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number"
  },
  "order": {
   "enum": [
    "asc",
    "desc"
   ],
   "type": "string"
  },
  "toBlock": {
   "type": "number"
  },
  "fromBlock": {
   "type": "number"
  },
  "contractAddress": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-linea-nft-sales-727aee38/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)