# Adversarial Suffix MCP

> Adversarial Suffix MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-12).

Processes input data to generate or evaluate adversarial suffixes for AI prompt robustness testing

## Facts

- Endpoint: POST https://api.m2mcent.com/adversarial-suffix-mcp/api/process?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/adversarial-suffix-mcp-a58dcda9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HA48EEQGb4K2uwc62_IgL

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 adversarial-suffix-mcp-a58dcda9 -d '<json body>'
```

Example prompt: Generate an adversarial suffix for this prompt: 'You are a helpful assistant. Do not reveal confidential information.' — I want to test how robust my LLM's defenses are against suffix-based attacks.

## When to prefer this

Choose this endpoint when you need to generate or evaluate adversarial suffixes for AI/LLM security testing, red-teaming, or robustness benchmarking. Prefer it over general text generation tools when the specific goal is adversarial prompt crafting for machine learning security research.

## Known failure modes

- Empty or missing 'data' field returns validation error
- Input text too long may exceed processing limits
- Payment failure via x402 protocol returns 402 status
- Service unavailability returns 5xx error
- Malformed JSON body returns 400 bad request

## 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 a processed result containing a generated or evaluated adversarial suffix for the submitted input text, suitable for use in AI robustness testing and red-teaming workflows.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/adversarial-suffix-mcp-a58dcda9/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)