# Certora Rule Generator MCP

> Certora Rule Generator MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).

Generates formal verification rules for smart contracts using the Certora Prover specification language (CVL)

## Facts

- Endpoint: POST https://api.m2mcent.com/certora-rule-generator-mcp/api/process
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/certora-rule-generator-mcp-c9fb99c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_a7gxjG28ZTWVT2fY_Gc3R

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 certora-rule-generator-mcp-c9fb99c4 -d '<json body>'
```

Example prompt: Can you generate Certora formal verification rules for this Solidity smart contract? It's a lending protocol and I want invariants checking that total borrowed never exceeds total supplied, and that only authorized accounts can liquidate positions.

## When to prefer this

Choose this endpoint when you need to automatically generate formal verification rules for smart contracts using the Certora Prover, especially when writing CVL specs manually is time-consuming or you lack expertise in the Certora specification language. Ideal for security audits, pre-deployment verification workflows, and DeFi protocol safety checks.

## Known failure modes

- Malformed or incomplete Solidity code input may result in incomplete rule generation
- Ambiguous property descriptions may produce generic rather than targeted rules
- Very complex contract logic may result in partial rule coverage
- Input data string missing or empty returns error
- Rate limiting or payment failure at $0.5 USDC per call

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns generated Certora Verification Language (CVL) rules including invariants, preconditions, postconditions, and rules that can be run against the Certora Prover to formally verify smart contract properties

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "payload": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/certora-rule-generator-mcp-c9fb99c4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)