# Vextorium ERC-20 Token Profile Lookup

> Vextorium ERC-20 Token Profile Lookup is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Reads ERC-20 token metadata directly from the contract on Base or Ethereum, returning name, symbol, decimals, total supply, bytecode size, and EIP-1967 proxy/upgradeability info.

## Facts

- Endpoint: POST https://api.vextorium.com/info-token-pago?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-erc-20-token-profile-lookup-275c7f4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cU1r6fEhYtSHLLoE8AgNZ

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-token-profile-lookup-275c7f4b -d '<json body>'
```

Example prompt: Can you look up the on-chain profile for the ERC-20 token at contract address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum — I need the name, symbol, decimals, total supply, bytecode size, and whether it's an upgradeable proxy?

## When to prefer this

Use this endpoint when you need authoritative, on-chain ERC-20 token metadata read directly from the contract — not from a third-party aggregator that may be stale or inaccurate. Especially useful for verifying upgradeability (EIP-1967 proxy detection) and getting the actual implementation address, which most token APIs do not expose. Best for Base and Ethereum; choose a different endpoint for other EVM chains.

## Known failure modes

- Invalid or non-existent contract address returns null fields or an error
- Contract address is not an ERC-20 token (e.g. EOA or non-token contract) — fields like name/symbol may be null
- Unsupported network value (not 'base' or 'ethereum') causes a validation error
- Network congestion or RPC unavailability may cause timeouts
- Non-checksummed or malformed address may cause a parsing error

## How this service works

ERC-20 token profile read directly from the contract on Base or Ethereum: name, symbol, decimals, total supply, bytecode size and whether it is an upgradeable EIP-1967 proxy (with implementation address).

## Output

Returns a JSON object with the token's on-chain name, symbol, decimals, total supply (as a number), bytecode size, a boolean indicating whether it is an EIP-1967 upgradeable proxy, the implementation address if applicable, the network name, a block explorer URL for the contract, and an optional note field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "contrato"
     ],
     "properties": {
      "red": {
       "enum": [
        "base",
        "ethereum"
       ],
       "type": "string"
      },
      "contrato": {
       "type": "string",
       "description": "Token contract address"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "red": {
       "type": [
        "string",
        "null"
       ]
      },
      "nota": {
       "type": [
        "string",
        "null"
       ]
      },
      "nombre": {
       "type": [
        "string",
        "null"
       ]
      },
      "simbolo": {
       "type": [
        "string",
        "null"
       ]
      },
      "contrato": {
       "type": [
        "string",
        "null"
       ]
      },
      "decimales": {
       "type": [
        "number",
        "null"
       ]
      },
      "explorador": {
       "type": [
        "string",
        "null"
       ]
      },
      "implementacion": {
       "type": [
        "string",
        "null"
       ]
      },
      "tamano_bytecode": {
       "type": [
        "number",
        "null"
       ]
      },
      "suministro_total": {
       "type": [
        "number",
        "null"
       ]
      },
      "es_proxy_actualizable": {
       "type": [
        "boolean",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "nombre": "USD Coin",
  "simbolo": "USDC",
  "decimales": 6,
  "suministro_total": 4307231240.15,
  "es_proxy_actualizable": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-erc-20-token-profile-lookup-275c7f4b/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)