# IoT ZK Proof Validator MCP Node

> IoT ZK Proof Validator MCP Node is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.408899/call, status unknown (last checked 2026-10-12).

Validates IoT-related zero-knowledge proofs by accepting a query string and returning a boolean validation report

## Facts

- Endpoint: POST https://api.m2mcent.com/iot-zk-proof-validator-mcp-234/api/execute?utm_source=zero.xyz
- Price: $0.408899/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iot-zk-proof-validator-mcp-node-c5b9fe4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xrrG4zS7YR6MPTiLnJIjw

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 iot-zk-proof-validator-mcp-node-c5b9fe4a -d '<json body>'
```

Example prompt: Validate this IoT zero-knowledge proof for me — the query is: 'device:sensor-42 proof:0xabc123deadbeef attestation:base64payload'

## When to prefer this

Use this endpoint when you need a fast, gasless, pay-per-call ZK proof validation specifically for IoT device attestations on Base L2, and want a simple boolean pass/fail result without running your own ZK verification infrastructure

## Known failure modes

- Malformed or missing query string returns an error
- Invalid or unparseable ZK proof format may return false
- Network or payment failure via x402 protocol results in a failed request
- Upstream node unavailability returns a 503 or timeout
- Proof format mismatch with expected IoT ZK schema returns false

## 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 JSON object containing a single 'report' boolean field — true if the ZK proof is valid, false if it is not

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/iot-zk-proof-validator-mcp-node-c5b9fe4a/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)