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Synapse API — Avalanche Token Transfers
x402
Synapse API — Avalanche 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 2026-09-14).
Retrieves ERC-20 and native token transfer history for a given address or contract on the Avalanche blockchain network.
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 the Avalanche network matching the query criteria, including transaction hashes, block numbers, token contract addresses, sender and recipient addresses, and transfer amounts. Supports cursor-based pagination via pageKey for large result sets.
Example use cases
Audit wallet token activity
“Show me all token transfers in and out of Avalanche wallet 0xAbc123...def from block 5000000 to 6000000, sorted newest first, up to 100 results.”
Monitor specific contract transfers
“Fetch all transfers for ERC-20 contract 0xToken1...xyz on Avalanche between blocks 8000000 and 9000000 in ascending order, limit to 25 results.”
Paginate large transfer history
“I already fetched the first page of token transfers for 0xAbc123...def on Avalanche — now get the next page using pageKey 'abc-page-key-xyz', same descending order and max 50 results.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/avalanche/token/transfersWhen to prefer
Use this endpoint when you need on-chain token transfer history specifically on the Avalanche network, with support for block-range filtering, contract address filtering, and paginated retrieval. Prefer this over generic blockchain explorers when you need structured, machine-readable transfer data accessible via a simple pay-per-call API without managing your own node.
Side effects
- Invalid or malformed owner address returns an error or empty result
- Block range too wide may exceed API limits or return timeout
- Invalid pageKey causes pagination failure
- Unknown contract address returns empty transfers array
- Missing required owner field may return a validation error
- Network congestion or Avalanche node unavailability causes delayed or failed response
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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