# unprice Token Lookup — Base ERC-20 Token Info by Address

> unprice Token Lookup — Base ERC-20 Token Info by Address is a paid API for AI agents from volkov.evgeny.m2.fvds.ru, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-23).

Returns on-chain ERC-20 token metadata (name, symbol, address, network, decimals) for a given token address on the Base network, paid per-request via USDC on Base using x402.

## Facts

- Endpoint: GET https://volkov.evgeny.m2.fvds.ru/pay/token?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/unprice-token-lookup-base-erc-20-token-info-by-address-9bf94fac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FFFJjB3qQEUK2s9MSbcY1

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 unprice-token-lookup-base-erc-20-token-info-by-address-9bf94fac
```

Example prompt: Look up the token metadata for the contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — I need its name, symbol, and how many decimals it uses.

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-request ERC-20 token metadata resolution on the Base network without committing to a full RPC node subscription or heavy blockchain indexer. Ideal for agents that occasionally need to enrich a contract address with human-readable token info (name, symbol, decimals) and want micropayment billing via USDC on Base (x402 protocol) rather than API keys or subscriptions.

## Known failure modes

- Invalid or non-existent contract address returns an error or empty result
- Address not on Base network may return wrong or no data
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Network timeout or server unavailability on the host domain
- Non-ERC-20 contract address may return malformed or incomplete metadata

## How this service works

Tiny paid web services for agents. Pay per request with USDC on Base via x402, plus non-x402 Base USDC tx-hash checkouts for Merchant Feed Audit, Base USDC receipts, and recent wallet statements.

## Output

A JSON object containing the token's full name, ticker symbol, contract address, network (e.g. 'base'), and decimal precision (e.g. 6 for USDC). Example: {name: 'USD Coin', symbol: 'USDC', address: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913', network: 'base', decimals: 6}.

## 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",
     "properties": {
      "address": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "USD Coin",
  "symbol": "USDC",
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "network": "base",
  "decimals": 6
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/unprice-token-lookup-base-erc-20-token-info-by-address-9bf94fac/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from volkov.evgeny.m2.fvds.ru](https://www.zero.xyz/host/volkov.evgeny.m2.fvds.ru/llms.txt)