# Grokzilla ERC-20 Token Metadata Lookup

> Grokzilla ERC-20 Token Metadata Lookup is a paid API for AI agents from grokzilla.shop, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Fetches ERC-20 token metadata (name, symbol, decimals, totalSupply) and optionally a holder's balance via multicall3 on Base or Ethereum

## Facts

- Endpoint: POST https://grokzilla.shop/api/skills/erc20-meta?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/grokzilla-erc-20-token-metadata-lookup-81bdf7f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P5r4NE5xt5tOiLZ5NV1tJ

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 grokzilla-erc-20-token-metadata-lookup-81bdf7f2 -d '<json body>'
```

Example prompt: What's the name, symbol, decimals, and total supply of the ERC-20 token at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum, and also check the balance for holder 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045?

## When to prefer this

Use this endpoint when you need on-chain ERC-20 token metadata (name, symbol, decimals, totalSupply) or a holder balance on Base or Ethereum without setting up your own RPC node. It uses multicall3 to batch all reads in a single round-trip, making it faster and cheaper than sequential RPC calls. Prefer this over generic blockchain RPC tools when you want a clean JSON response with no Web3 library setup required, and when operating on Base or Ethereum mainnet specifically.

## Known failure modes

- 400 Bad Request if the token address is not a deployed contract on the specified chain
- Invalid address format (must be 0x + 40 hex chars) will fail schema validation
- Contract exists but does not implement ERC-20 interface may return partial or empty results
- Network congestion on Base/Ethereum may cause timeouts
- Incorrect chain selection (e.g. token is on Ethereum but Base is specified) returns 400 or empty data

## How this service works

Read ERC-20 name, symbol, decimals, totalSupply (and optional holder balanceOf) via multicall3 on Base or Ethereum. 400 if the address is not a contract.

## Output

Returns the token's name, symbol, decimals, and totalSupply read via multicall3. If a holder address is provided, also returns that holder's balanceOf balance. Returns HTTP 400 if the address is not a valid contract on the specified chain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "base",
    "ethereum"
   ],
   "type": "string",
   "default": "base"
  },
  "token": {
   "type": "string",
   "pattern": "^0x[0-9a-fA-F]{40}$",
   "description": "ERC-20 contract address"
  },
  "holder": {
   "type": "string",
   "pattern": "^0x[0-9a-fA-F]{40}$",
   "description": "Optional holder for balanceOf"
  },
  "request_id": {
   "type": "string",
   "pattern": "^[A-Za-z0-9._:-]+$",
   "maxLength": 64,
   "minLength": 1,
   "description": "Optional idempotency key. Echoed back; a credit-pack redemption with the same request_id and body is charged once."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/grokzilla-erc-20-token-metadata-lookup-81bdf7f2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from grokzilla.shop](https://www.zero.xyz/host/grokzilla.shop/llms.txt)