# M2MCent Web3 Metadata Synthesizer MCP-307

> M2MCent Web3 Metadata Synthesizer MCP-307 is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $1.136908/call, status unknown (last checked 2026-10-10).

Accepts an image input and returns a boolean result, likely performing image validation or classification via a monetized MCP node on the M2MCent network.

## Facts

- Endpoint: POST https://api.m2mcent.com/web3-metadata-synthesizer-mcp-307/api/execute?utm_source=zero.xyz
- Price: $1.136908/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/m2mcent-web3-metadata-synthesizer-mcp-307-57e1760a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jnfDfU_FarxEEkM8-kNjh

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 m2mcent-web3-metadata-synthesizer-mcp-307-57e1760a -d '<json body>'
```

Example prompt: Can you run this image through the web3 metadata synthesizer to check if it passes validation?

## When to prefer this

Use this endpoint when you need a quick boolean pass/fail result for an image within a web3 or MCP-node workflow, particularly when operating on the Base L2 network with USDC micropayments. It is appropriate when token-context efficiency matters and a simple validation signal is sufficient.

## Known failure modes

- Missing or invalid image input returns an error
- Malformed base64 or unsupported image format may cause processing failure
- Payment failure via x402 protocol results in 402 response and no execution
- Network or node unavailability may cause timeout or 5xx error
- Ambiguous schema means unclear what image property represents (URL, base64, file path)

## 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 boolean (true or false) indicating whether the input image passes or fails the synthesizer's validation or classification logic.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/m2mcent-web3-metadata-synthesizer-mcp-307-57e1760a/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)