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Synapse API — Soneium Token Transfers
x402
Synapse API — Soneium Token Transfers 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 2026-10-30).
Retrieves token transfer history for a given owner address on the Soneium blockchain, with filtering by block range, contract, and pagination support.
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
Returns a list of token transfer records on the Soneium network matching the query, including sender, recipient, token contract, amount, block number, and transaction hash. Supports pagination via pageKey for large result sets.
Example use cases
Wallet token activity audit
“Pull all token transfers for the Soneium wallet 0x1234...abcd from block 2000000 to 2100000 in descending order — I need to review recent outbound activity.”
DeFi contract transfer monitoring
“Give me the last 100 token transfer events for the Soneium contract at 0xDeFi...5678 since block 1500000, sorted newest first.”
Portfolio transfer history export
“Fetch all token transfers for my Soneium address 0xMyWallet...9abc involving contracts 0xTokenA...111 and 0xTokenB...222, starting from block 900000 going up to block 1000000 in ascending order.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/soneium/token/transfers?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need token transfer history specifically on the Soneium blockchain. It supports rich filtering by block range, contract address, and sort order with pagination, making it suitable for auditing, portfolio tracking, or monitoring DeFi contract activity on Soneium. Choose this over generic explorers when you need programmatic, paginated access at low per-call cost via x402.
Side effects
- Invalid owner address format returns an error
- Unknown or malformed contract address in contractAddresses array causes query failure
- Block range too large may result in timeout or truncated response
- Invalid pageKey leads to pagination error
- Missing required owner field returns a validation error
- Soneium node unavailability causes upstream failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| order | string | |
| owner | string | |
| pageKey | string | |
| toBlock | string | |
| maxCount | number | |
| fromBlock | string | |
| contractAddresses | array |
Tags
x402
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