# DeFi ZK Proof Classifier

> DeFi ZK Proof Classifier is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.724502/call, status unknown (last checked 2026-10-11).

Classifies images related to DeFi zero-knowledge proofs via a monetized MCP node with per-call USDC micropayment settlement

## Facts

- Endpoint: POST https://api.m2mcent.com/defi-zk-proof-classifier-mcp-759/api/execute?utm_source=zero.xyz
- Price: $0.724502/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/defi-zk-proof-classifier-163d31fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5O8JVyuY6_6IupGlR7mqz

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 defi-zk-proof-classifier-163d31fd -d '<json body>'
```

Example prompt: Classify this ZK proof screenshot for me — here's the image string, and let me know what type of DeFi zero-knowledge proof it is.

## When to prefer this

Use this endpoint when you need to classify DeFi-related zero-knowledge proof images and require a micropayment-based, serverless MCP node approach with USDC settlement on Base L2. Suitable for automated DeFi audit pipelines, ZK proof categorization workflows, or agents that need lightweight per-call billing without subscription overhead.

## Known failure modes

- Missing 'image' field in request body returns validation error
- Malformed or non-image string may return unexpected classification or error
- Payment failure via x402 protocol results in 402 Payment Required response
- Invalid Base64 or URL string causes processing failure
- Schema mismatch — response 'url' field typed as boolean may cause downstream parsing issues

## 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 JSON object containing a 'url' field (typed as boolean in schema) indicating the classification result for the submitted ZK proof image. The response is minimal and the actual classification output is encoded in this field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "image"
 ],
 "properties": {
  "image": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/defi-zk-proof-classifier-163d31fd/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)