# ERC-20 Token Metadata Lookup

> ERC-20 Token Metadata Lookup is a paid API for AI agents from biosfera.46-62-215-147.sslip.io, paid per call via x402, $0.0015/call, status down (last checked 2026-10-03).

Returns name, symbol, decimals, and human-formatted total supply for any ERC-20 token on Base, Ethereum, Arbitrum, Optimism, or Polygon in a single call.

## Facts

- Endpoint: GET https://biosfera.46-62-215-147.sslip.io/o/erc20-metadata?utm_source=zero.xyz
- Price: $0.0015/call
- Payment: x402
- Status: down
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/erc-20-token-metadata-lookup-c530f2bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AzdjyZKzrUYzh3xI0lviu

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 erc-20-token-metadata-lookup-c530f2bf
```

Example prompt: What's the name, symbol, decimals, and total supply of the token at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum?

## When to prefer this

Choose this endpoint when you need all four standard ERC-20 metadata fields (name, symbol, decimals, total supply) in a single call and want the total supply pre-formatted by decimals — avoiding multiple separate RPC calls. Prefer it over raw blockchain RPC queries when you need a simple REST interface across Base, Ethereum, Arbitrum, Optimism, or Polygon without managing provider connections yourself.

## Known failure modes

- Invalid or non-ERC-20 contract address returns an error or empty metadata
- Unsupported chain value results in a validation error
- Contract exists but doesn't implement ERC-20 standard methods, causing partial or failed response
- Network congestion may increase latency or cause timeouts
- Malformed address (not matching 0x + 40 hex chars) is rejected by input validation

## How this service works

Use when you need name, symbol, decimals and total supply of an ERC-20 token on Base, Ethereum, Arbitrum, Optimism or Polygon in one call, with the supply formatted by decimals.

## Output

Returns a JSON object containing the token's human-readable name, ticker symbol, number of decimals, and total supply formatted as a human-readable number (already divided by the token's decimal precision), all retrieved in a single on-chain call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chain",
      "token"
     ],
     "properties": {
      "chain": {
       "enum": [
        "base",
        "ethereum",
        "arbitrum",
        "optimism",
        "polygon"
       ],
       "type": "string"
      },
      "token": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/erc-20-token-metadata-lookup-c530f2bf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from biosfera.46-62-215-147.sslip.io](https://www.zero.xyz/host/biosfera.46-62-215-147.sslip.io/llms.txt)