# Solidity Smart Contract Security Audit

> Solidity Smart Contract Security Audit is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Performs a security audit of a Solidity smart contract at a given address and returns vulnerability findings.

## Facts

- Endpoint: GET https://mcp-gateway.agentdiet.dev/v1/solidity-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solidity-smart-contract-security-audit-a1c1a16c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OYhBStTLwilUIB96COP2b

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 solidity-smart-contract-security-audit-a1c1a16c
```

Example prompt: Can you run a security audit on the Solidity smart contract at address 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 and tell me if there are any vulnerabilities or risks?

## When to prefer this

Choose this endpoint when you need a quick, pay-per-use ($0.01 USDC) automated security scan of a deployed Solidity smart contract by address, especially in agentic workflows that need on-demand contract risk assessment without a full manual audit engagement. Prefer this over general code review tools when you specifically need EVM/Solidity smart contract vulnerability detection.

## Known failure modes

- Invalid or non-existent contract address returns empty or error data
- Non-Solidity or non-EVM address formats may not be recognized
- Contract not yet verified on-chain may yield limited results
- Payment failure (insufficient USDC) results in HTTP 402 response
- Gateway timeout if the audit analysis exceeds processing limits

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with status 'ok', a data object containing audit findings (vulnerabilities, risk levels, code issues), and an roi_proof field showing compression ratio metrics (~91% compression ratio per example response).

## 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",
      "POST"
     ],
     "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": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solidity-smart-contract-security-audit-a1c1a16c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-gateway.agentdiet.dev](https://www.zero.xyz/host/mcp-gateway.agentdiet.dev/llms.txt)