# CryptoIntel Contract Security Check

> CryptoIntel Contract Security Check is a paid API for AI agents from cryptointel-production.up.railway.app, paid per call via x402, $0.09/call, status unknown (last checked 2026-09-15).

Detects upgradeable proxy patterns (EIP-1967, UUPS, Transparent) and basic red flags in Base smart contracts

## Facts

- Endpoint: GET https://cryptointel-production.up.railway.app/contract-check
- Price: $0.09/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cryptointel-contract-security-check-dc811cc9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qQqLsEDDABT3Y9fkbfNIo

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 cryptointel-contract-security-check-dc811cc9
```

Example prompt: Can you check if the Base contract at 0x4200000000000000000000000000000000000006 uses any upgradeable proxy pattern like UUPS or Transparent, and flag any red flags I should know about before interacting with it?

## When to prefer this

Use this endpoint when you need to quickly assess whether a Base smart contract is upgradeable and who controls the upgrade key — critical before approving large transactions, staking funds, or integrating a DeFi protocol. Prefer this over generic blockchain explorers when you need structured, programmatic output about proxy patterns specifically on Base.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract address not found on Base network returns not-found error
- Non-contract address (EOA wallet) may return no proxy data
- Network timeout or RPC issues cause 5xx errors
- Missing address query parameter returns validation error

## How this service works

Token risk check on Base: upgradeable proxy detection (EIP-1967), ownership renouncement status, real Uniswap V3 liquidity pool presence vs WETH, and mint() function presence

## Output

Returns a JSON object indicating whether the contract uses an upgradeable proxy pattern (EIP-1967, UUPS, or Transparent Proxy), the specific upgrade mechanism detected, and any basic red flags or suspicious characteristics found in the contract on Base.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "address": "0x4200000000000000000000000000000000000006"
  }
 }
}
```

## 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"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "data": {
       "type": "object"
      },
      "fee_paid": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cryptointel-contract-security-check-dc811cc9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptointel-production.up.railway.app](https://www.zero.xyz/host/cryptointel-production.up.railway.app/llms.txt)