# ClearCheck Base Token Risk Check

> ClearCheck Base Token Risk Check is a paid API for AI agents from loonie-toll.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).

Reads on-chain risk signals for a Base network ERC-20 token: ownership, mint authority, upgradeability, pause, and blacklist powers, returning a verdict and danger flags.

## Facts

- Endpoint: GET https://loonie-toll.onrender.com/base-token-check?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clearcheck-base-token-risk-check-eeb084fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8_9KQFLR0iDzDIVb03_38

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 clearcheck-base-token-risk-check-eeb084fd
```

Example prompt: Can you check the on-chain risk profile for this Base token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed — I want to know if ownership is renounced, whether it can be minted or paused, and what the overall verdict is before I buy any.

## When to prefer this

Use this endpoint when you need fast, factual on-chain risk signals specifically for Base network tokens before a purchase, listing, or investment decision. Prefer this over general blockchain explorers when you want a pre-structured verdict with danger/caution flags rather than raw contract data. Best suited for DeFi due diligence workflows where mint authority, ownership, pause, and blacklist risks are the primary concerns.

## Known failure modes

- Invalid or malformed contract address returns an error or null fields
- Address is not a token contract on Base — returns empty or unchecked fields
- Contract is unverified on-chain — some powers may be listed as not checked
- Network or RPC timeout — may return partial data or error
- Non-Base chain address provided — results may be incorrect or empty

## How this service works

Base token check before you buy: owner, mint, upgrade, pause and blacklist powers read on-chain. Facts only, not advice.

## Output

Returns a structured JSON object with: token metadata (symbol, decimals, total supply, known issuer), ownership details (owner address, whether renounced, owner share %, whether owner is a contract), powers flags (openMint, mintFunction, pauseFunction, blacklistFunction), upgradeability info (kind, admin), a danger array of critical risk flags, a caution array of warnings, a verdict string summarizing overall risk, a list of what was not checked, data sources, and a disclaimer. Also includes the chain identifier, retrieval timestamp, and scope.

## 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": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "Base token contract address (0x followed by 40 hex characters)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "chain": {
       "type": [
        "null",
        "string"
       ]
      },
      "scope": {
       "type": [
        "null",
        "string"
       ]
      },
      "token": {
       "type": [
        "null",
        "object"
       ],
       "properties": {
        "symbol": {
         "type": [
          "null",
          "string"
         ]
        },
        "decimals": {
         "type": [
          "null",
          "number"
         ]
        },
        "knownIssuer": {
         "type": [
          "null",
          "string"
         ]
        },
        "totalSupply": {
         "type": [
          "null",
          "string"
         ]
        },
        "totalSupplyRaw": {
         "type": [
          "null",
          "string"
         ]
        }
       }
      },
      "danger": {
       "type": [
        "array",
        "null"
       ]
      },
      "powers": {
       "type": [
        "null",
        "object"
       ],
       "properties": {
        "checked": {
         "type": [
          "boolean",
          "null"
         ]
        },
        "openMint": {
         "type": [
          "boolean",
          "null"
         ]
        },
        "mintFunction": {
         "type": [
          "boolean",
          "null"
         ]
        },
        "pauseFunction": {
         "type": [
          "boolean",
          "null"
         ]
        },
        "blacklistFunction": {
         "type": [
          "boolean",
          "null"
         ]
        }
       }
      },
      "address": {
       "type": [
        "null",
        "string"
       ]
      },
      "caution": {
   
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clearcheck-base-token-risk-check-eeb084fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from loonie-toll.onrender.com](https://www.zero.xyz/host/loonie-toll.onrender.com/llms.txt)