# Vextorium ERC-20 Transfer Events API

> Vextorium ERC-20 Transfer Events API is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-16).

Fetches the latest Transfer events for a given ERC-20 token (optionally filtered by wallet direction) over the last N blocks, with decimal-adjusted token amounts, across 12 EVM chains.

## Facts

- Endpoint: POST https://api.vextorium.com/erc20-transferencias-pago?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-erc-20-transfer-events-api-c6f4bec1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QEJds75vUYmJ_V8ien_oT

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 vextorium-erc-20-transfer-events-api-c6f4bec1 -d '<json body>'
```

Example prompt: Can you pull the latest USDC transfer events on Base for the contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 over the last 50 blocks, and show me which transfers went in or out of wallet 0xb2cc224c1c9feE385f8ad6a55b4d94E92359DC59?

## When to prefer this

Choose this endpoint when you need on-chain ERC-20 Transfer event data with decimal-adjusted amounts across multiple EVM chains, especially when you want to filter by wallet direction (inflows/outflows). It is ideal for real-time monitoring, wallet auditing, or DeFi analytics workflows without needing to run your own node or index events manually.

## Known failure modes

- Invalid or non-ERC-20 token contract address returns an empty or error response
- Unsupported chain name causes a validation error
- Very large block ranges may return truncated results or time out
- Wallet address with no activity in the specified block window returns zero transfers
- Malformed wallet or token address causes a parsing error

## How this service works

Latest Transfer events of an ERC-20 token, optionally only those in or out of a wallet, over the last N blocks, with decimal-adjusted amounts. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

## Output

Returns a JSON object with the chain name, token contract address, token symbol, number of transfers found, blocks scanned, and an array of transfer events each containing sender address (de), recipient address (a), transaction hash, block number, and decimal-adjusted token amount.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "red": {
   "enum": [
    "base",
    "ethereum",
    "arbitrum",
    "optimism",
    "polygon",
    "bnb",
    "avalanche",
    "gnosis",
    "linea",
    "scroll",
    "sonic",
    "unichain"
   ],
   "type": "string",
   "description": "Chain (default base)"
  },
  "token": {
   "type": "string"
  },
  "limite": {
   "type": "integer"
  },
  "wallet": {
   "type": "string"
  },
  "bloques": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "red": "base",
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "wallet": null,
  "simbolo": "USDC",
  "encontradas": 1447,
  "transferencias": [
   {
    "a": "0xb2cc224c1c9feE385f8ad6a55b4d94E92359DC59",
    "de": "0x61040E143A77F165Ba44543AF4A079F2C809D14b",
    "hash": "0x5ed77078e5021b4b647f5bf2bfccc8adf874ffa1e7a978f604c709957c66f013",
    "bloque": 52091076,
    "cantidad": 62148.505122
   },
   {
    "a": "0x3FE04A59Ebd38cF06080a6F60a98D124eb59392A",
    "de": "0x8d05E14Ae19546F9F22D3C5b3470EF3337BaA57C",
    "hash": "0x067ad836b1068efb4b67591727005b9f10c0ccf27b28450dd67bf86897e50cb6",
    "bloque": 52091076,
    "cantidad": 147661.344088
   }
  ],
  "bloques_revisados": 20
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-erc-20-transfer-events-api-c6f4bec1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)