# M2MCent Web3 Smart Contract Indexer MCP Node

> M2MCent Web3 Smart Contract Indexer MCP Node is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $1.389896/call, status unknown (last checked 2026-10-14).

Executes a smart contract indexing query against a monetized MCP node, returning a boolean result via x402 micropayment settlement on Base L2.

## Facts

- Endpoint: POST https://api.m2mcent.com/web3-smart-contract-indexer-mcp-73/api/execute?utm_source=zero.xyz
- Price: $1.389896/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/m2mcent-web3-smart-contract-indexer-mcp-node-3ce27d21
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M7Lyu4bZM58Geb_iPuang

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-smart-contract-indexer-mcp-node-3ce27d21 -d '<json body>'
```

Example prompt: Search the M2MCent smart contract indexer with the query 'ERC-20 token transfer events for address 0xABC123' and tell me if it returns a match.

## When to prefer this

Choose this endpoint when you need a quick boolean check against a web3 smart contract index on Base L2 and can tolerate a minimal true/false response without additional context. Prefer alternatives if you need detailed contract data, event logs, or structured multi-field responses, as this endpoint only returns a boolean.

## Known failure modes

- Payment failure if USDC balance is insufficient for x402 micropayment ($1.39 per call)
- Empty or malformed text input may return false negatives
- The boolean response schema is minimal — no detail on why result is true/false
- High-volume sibling endpoints with identical schemas suggest auto-generated stubs with uncertain data quality
- Node may be offline or the subdomain unreachable, returning a network error

## 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 with a single 'result' boolean field indicating whether the smart contract indexer found a match or confirmed the condition expressed in the text query input.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "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-smart-contract-indexer-mcp-node-3ce27d21/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)