# YARA Rule Generator MCP

> YARA Rule Generator MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-12).

Generates YARA rules for malware detection and threat hunting from provided threat intelligence or sample data

## Facts

- Endpoint: POST https://api.m2mcent.com/yara-rule-generator-mcp/api/process?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/yara-rule-generator-mcp-523ed26c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tuYaMGQVsAUlIN-CGZ2ZB

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 yara-rule-generator-mcp-523ed26c -d '<json body>'
```

Example prompt: Generate a YARA rule to detect malware with these characteristics: the file contains the string 'evil_loader_v2', imports VirtualAlloc and CreateRemoteThread, and has a PE header with section name '.packed' — output a complete, ready-to-use YARA rule.

## When to prefer this

Choose this endpoint when you need to rapidly generate YARA detection rules from threat intelligence, malware sample descriptions, or IOC data without manually writing rule syntax. Ideal for SOC analysts, threat hunters, and security automation pipelines that need to operationalize indicators into scannable signatures quickly. Prefer this over manual rule writing when speed and automation are priorities.

## Known failure modes

- Insufficient or ambiguous input data may produce overly generic rules with high false-positive rates
- Input that doesn't describe any detectable patterns may return an empty or trivial rule
- Malformed or contradictory indicator data may result in syntactically invalid YARA output
- Very complex multi-stage malware descriptions may exceed the model's context and produce incomplete rules

## 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

A complete, syntactically valid YARA rule as text, including rule name, metadata section, strings section with named pattern variables, and a condition block that logically combines the provided indicators for use in malware scanning or threat hunting tools.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/yara-rule-generator-mcp-523ed26c/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)