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Synapse API — Polygon Token Transfer History
x402
Synapse API — Polygon Token Transfer History 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 ERC-20 and native token transfer events for a given address or contract on the Polygon 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 Polygon network, each including transaction hash, block number, from/to addresses, token contract address, amount, and asset type. Supports cursor-based pagination via pageKey for large result sets.
Example use cases
Audit wallet token activity
“Show me every token transfer in and out of the Polygon wallet 0xDEF...456 between block 48000000 and 49000000, sorted oldest to newest, up to 200 results.”
Track specific token contract movements
“Find all transfers for the USDC contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 involving the wallet 0xABC...789 on Polygon, sorted in descending order.”
Paginate large transfer history
“I already fetched the first page of token transfers for 0x111...222 on Polygon — here's my pageKey from the last response, can you fetch the next 50 records in descending order?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/polygon/token/transfersWhen to prefer
Use this endpoint when you need historical token transfer data specifically on the Polygon network and want to filter by owner wallet, contract address, or block range. Prefer it over generic blockchain explorers when you need machine-readable, paginated JSON output suitable for programmatic processing. It is especially useful for auditing wallet activity, building transfer timelines, or feeding DeFi analytics pipelines.
Side effects
- Invalid or malformed wallet address returns an error or empty result set
- Unrecognized contract address yields no results without explicit error
- Invalid block range (fromBlock > toBlock) may return an error or empty array
- Exceeding max allowed maxCount may be capped or return an error
- Exhausted pageKey (stale or invalid) returns an error or empty page
- Network or upstream indexer downtime returns a 5xx error
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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