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Synapse API — Token Transfers Lookup
x402
Synapse API — Token Transfers Lookup 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 historical token transfer events for a given wallet address across blockchain networks, filtered by block range, contract addresses, and pagination options.
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 token transfer events matching the query, each containing sender, recipient, token contract address, value, block number, transaction hash, and metadata. Results may be paginated via a pageKey for subsequent requests.
Example use cases
DeFi wallet audit for compliance
“Pull all token transfers in and out of wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e from block 17000000 to 18000000, sorted ascending, and include any USDC or USDT contract transfers — I need to audit this wallet's activity.”
Portfolio tracker token history
“Get the last 100 token transfers for my wallet 0xdEaDbEeF000000000000000000000000DeAdBeEf, sorted newest first — I want to see my recent token movements across all contracts.”
On-chain analytics for a specific token contract
“Fetch all transfers for the WETH contract 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 involving wallet 0x1234567890abcdef1234567890abcdef12345678 between blocks 19000000 and 19200000, up to 200 results in ascending order.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/stable/token/transfersWhen to prefer
Use this endpoint when you need historical on-chain token transfer data for a specific wallet, optionally filtered by token contract addresses and block range. It is well-suited for portfolio analysis, compliance auditing, DeFi analytics, or any use case requiring paginated, ordered transfer history. Prefer this over generic blockchain explorers when you need programmatic, structured transfer data at pay-per-call pricing without a subscription.
Side effects
- Invalid owner address format returns an error or empty result
- Invalid block range (fromBlock > toBlock) may return an error
- Unsupported contract address format causes rejection
- Missing required owner field returns a validation error
- pageKey from a different query context returns unexpected results
- Rate limit or payment failure (402) if USDC balance is insufficient
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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