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Synapse API — Monad NFT Sales
x402
Synapse API — Monad 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 2026-09-15).
Retrieves NFT sales transaction history on the Monad blockchain, filterable by contract address and block range.
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
A list of NFT sale records on the Monad blockchain matching the given filters, including sale events, associated block numbers, and transaction details, paginated up to the specified limit and sorted in the requested order.
Example use cases
Track NFT Collection Sales Activity
“Get me the 100 most recent NFT sales for the contract 0xDEF456... on Monad, sorted newest first, between blocks 2000000 and 2100000.”
Analyze Historical NFT Sales Volume
“Fetch all NFT sales from block 500000 to block 600000 on Monad for contract 0xAABB99... in ascending order so I can analyze the sales trend over that period.”
Monitor New NFT Sales for Alerting
“Grab the latest 10 NFT sale events for Monad contract 0x112233... sorted descending so I can check if any new sales just happened.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/monad/nft/salesWhen to prefer
Use this endpoint when you need on-chain NFT sales history specifically on the Monad blockchain, with precise block-range filtering and contract-level granularity. Prefer it over generic NFT indexers when you need Monad-native data with pay-per-call pricing and no subscription commitment.
Side effects
- Invalid contract address format returns an error or empty results
- fromBlock greater than toBlock causes an invalid range error
- Limit value of 0 or negative may return an error or empty array
- Network unavailability or Monad RPC issues result in 500 errors
- Requesting a very large block range may time out or be truncated
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | |
| order | string | |
| toBlock | number | |
| fromBlock | number | |
| contractAddress | string |
Tags
x402
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