# Julie Autonomous Security Agent – EVM Smart Contract Auditor

> Julie Autonomous Security Agent – EVM Smart Contract Auditor is a paid API for AI agents from julie.freysa.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Screens a Base-network EVM smart contract for honeypot patterns, reentrancy/selfdestruct vulnerabilities, access-control issues, and liquidity-lock status before a swap or snipe.

## Facts

- Endpoint: GET https://julie.freysa.dev/api/audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/julie-autonomous-security-agent-evm-smart-contract-auditor-b499a955
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0koSuzCunBFkdQ6KqSc2y

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 julie-autonomous-security-agent-evm-smart-contract-auditor-b499a955
```

Example prompt: Before I snipe this token, can you run a security audit on the Base contract at 0xAbCd1234...5678 and tell me if it's a honeypot, has reentrancy issues, or has its liquidity locked?

## When to prefer this

Choose this endpoint when you need a fast, pre-trade security screen for a Base-network EVM token contract specifically — particularly for honeypot detection, reentrancy/selfdestruct flags, access-control analysis, and liquidity-lock verification before executing a swap or snipe. It is purpose-built for Base chain DeFi token safety at low per-call cost ($0.01 USDC), making it ideal for automated trading agents that need rapid go/no-go decisions on newly launched contracts.

## Known failure modes

- Invalid or malformed contract address (not 0x-prefixed 40-hex-char) returns a 400/validation error
- Contract address not deployed on Base network returns an error or null results
- Payment of 0.01 USDC via x402 fails due to insufficient balance or wallet misconfiguration
- Rate limiting or service unavailability returns 402/503
- Newly deployed contract with no on-chain history may return incomplete or low-confidence scores

## How this service works

EVM smart-contract risk screen for Base tokens. Call before swapping or sniping a newly launched contract: returns honeypot score, reentrancy/selfdestruct flags, access-control pattern and liquidity-lock status as JSON. Pay 0.01 USDC on Base per call via x402.

## Output

Returns a JSON object containing a numerical honeypot score, boolean flags for reentrancy and selfdestruct vulnerabilities, a classification of the access-control pattern, and the liquidity-lock status for the queried Base network contract address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "contract"
     ],
     "properties": {
      "contract": {
       "type": "string",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "EVM contract address (0x-prefixed, 40 hex chars) to audit on Base."
      }
     }
    }
   },
   "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/julie-autonomous-security-agent-evm-smart-contract-auditor-b499a955/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from julie.freysa.dev](https://www.zero.xyz/host/julie.freysa.dev/llms.txt)