# Prompt Refiner MCP

> Prompt Refiner MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-12).

Refines and improves AI prompts submitted as text, returning an enhanced version optimized for clarity and effectiveness

## Facts

- Endpoint: POST https://api.m2mcent.com/prompt-refiner-mcp/api/process?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/prompt-refiner-mcp-9cf1f022
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jlSA6XfYv1kpWHx8HoeLn

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 prompt-refiner-mcp-9cf1f022 -d '<json body>'
```

Example prompt: Can you refine this prompt I wrote so it's clearer and more effective: 'write me a blog post about dogs'?

## When to prefer this

Choose this endpoint when an agent or user needs to systematically improve raw or poorly-formed prompts before sending them to an LLM, especially in automated pipelines where prompt quality matters. Useful for pre-processing user inputs in agentic workflows that rely on downstream LLM calls.

## Known failure modes

- Empty or missing 'data' field returns an error response
- Extremely long input text may be truncated or rejected
- Non-prompt or nonsensical input may return minimally changed output
- Network timeout if the refinement model is under high load
- Payment failure (402) if USDC balance is insufficient

## 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 refined, improved version of the submitted prompt text with better clarity, specificity, and effectiveness for use with AI language models

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/prompt-refiner-mcp-9cf1f022/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)