# Synapse API — Polygon Token Transfer History

> 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

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/polygon/token/transfers
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-polygon-token-transfer-history-cf674009
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IIKOwFg_H8ImF3zCBkW7s

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synapse-api-polygon-token-transfer-history-cf674009 -d '<json body>'
```

Example prompt: Pull all ERC-20 token transfers for the Polygon wallet 0xABC...123 from block 50000000 to 51000000, sorted in descending order, and show me the first 100 results.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "order": {
   "enum": [
    "asc",
    "desc"
   ],
   "type": "string"
  },
  "owner": {
   "type": "string"
  },
  "pageKey": {
   "type": "string"
  },
  "toBlock": {
   "type": "string"
  },
  "maxCount": {
   "type": "number"
  },
  "fromBlock": {
   "type": "string"
  },
  "contractAddresses": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-polygon-token-transfer-history-cf674009/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)