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Synapse API — Arbitrum Token Transfers
x402
Synapse API — Arbitrum 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 2026-09-15).
Retrieves historical ERC-20 and native token transfer events for a given address on the Arbitrum network, with pagination and block range filtering.
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 events on Arbitrum matching the query, each including transaction hash, block number, sender, receiver, token contract address, and amount transferred, along with a page key for pagination if more results are available.
Example use cases
Audit wallet token activity
“Show me every token transfer in and out of the Arbitrum wallet 0xAbC...123 from block 150000 to 180000, sorted from newest to oldest, up to 50 results.”
Track specific token contract transfers
“Get all transfers for the USDC contract at 0xa0b86991... on Arbitrum involving wallet 0xDEF...456, starting from block 200000 ascending.”
Paginate through large transfer history
“Continue fetching the next page of token transfers for Arbitrum address 0x789...abc using page key 'abc123xyz', max 25 results in descending order.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/arbitrum/token/transfersWhen to prefer
Use this endpoint when you need historical token transfer data specifically on the Arbitrum network and want filtering by block range, contract address, or wallet owner with pagination support. Prefer this over generic blockchain explorers when you need structured, programmatic access to transfer history at $0.01 per call without managing your own node.
Side effects
- Invalid or missing owner address returns an error or empty result
- Invalid block range (fromBlock > toBlock) may return an error
- Invalid contract address format causes a validation error
- Expired or invalid pageKey causes pagination failure
- Rate limiting or payment failure results in 402 or 429 response
- Very large maxCount values may time out or be capped by the underlying provider
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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