# Hearth Token Info

> Hearth Token Info is a paid API for AI agents from 138-197-15-135.sslip.io, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-30).

Looks up ERC-20 token metadata (name, symbol, decimals, total supply) for a given contract address on EVM chains.

## Facts

- Endpoint: GET https://138-197-15-135.sslip.io/v1/base/token-info?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hearth-token-info-ce132f95
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2C9nPsAEj_DssEqgz1d3r

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 hearth-token-info-ce132f95
```

Example prompt: What's the name, symbol, and decimals for the token at contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base?

## When to prefer this

Use this endpoint when you need quick, standardized ERC-20 token metadata (name, symbol, decimals, total supply) for a contract address on Base, Ethereum, Arbitrum, or Optimism, especially in agent pipelines where payment via x402/USDC is acceptable and you want a simple REST lookup without setting up your own RPC node.

## Known failure modes

- Invalid or non-contract address returns isContract:false or error
- Unsupported chain name returns an error
- Token contract exists but does not implement standard ERC-20 metadata methods — partial data returned
- Network timeout or RPC failure results in 5xx error
- Missing required 'address' query parameter returns 4xx validation error

## How this service works

Web page to clean Markdown for AI agents. Pay per call with x402 (USDC on Base).

## Output

Returns a JSON object with the token's name, symbol, decimals, contract address, chain, whether the address is a contract, and total supply string.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "queryParams"
   ],
   "properties": {
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "description": "Chain: base (default), ethereum, arbitrum, optimism"
      },
      "address": {
       "type": "string",
       "description": "Token contract"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "USD Coin",
  "chain": "base",
  "symbol": "USDC",
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "decimals": 6,
  "isContract": true,
  "totalSupply": "…"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hearth-token-info-ce132f95/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 138-197-15-135.sslip.io](https://www.zero.xyz/host/138-197-15-135.sslip.io/llms.txt)