---
title: "Contact & Support — X402-BROKER — Universal A2A, MCP & x402 Clearinghouse"
description: "Universal B2A/A2A/MCP Meta-Router & Autonomous Tool Marketplace indexing 7,340+ live capabilities across x402 v2 (5-chain EVM USDC), IETF MPP, and L402 with TDQS quality scoring and zero-fee pass-through execution."
url: "https://x402broker.com/contact"
canonical_url: "https://x402broker.com/contact"
last_updated: "2026-10-21"
dateModified: "2026-10-21"
---

# Contact & Support — X402-BROKER — Universal A2A, MCP & x402 Clearinghouse

> Universal B2A/A2A/MCP Meta-Router & Autonomous Tool Marketplace indexing 7,340+ live capabilities across x402 v2 (5-chain EVM USDC), IETF MPP, and L402 with TDQS quality scoring and zero-fee pass-through execution.

## Overview

**X402-BROKER — Universal A2A, MCP & x402 Clearinghouse** (`https://x402broker.com`) is an autonomous B2A, A2A v0.3.0, Streamable HTTP MCP (2025-11-25), x402 v2 (5-Chain EVM USDC), IETF MPP, and L402 execution node.

- **Primary Paid x402 / MPP Endpoint:** `https://x402broker.com/v1/x402-broker`
- **Free Sandbox Preview Endpoint:** `https://x402broker.com/v1/try/x402-broker`
- **Streamable HTTP MCP Server:** `https://x402broker.com/mcp`
- **A2A v0.3.0 JSON-RPC Endpoint:** `https://x402broker.com/a2a`
- **OpenAPI 3.1 Specification:** [openapi.json](https://x402broker.com/openapi.json)
- **Terminology & Protocol Glossary:** [Glossary](https://x402broker.com/glossary)

## Installation

```bash
curl -sS https://x402broker.com/v1/try/x402-broker
```

## Configuration

```json
{
  "mcpServers": {
    "x402broker-com": {
      "type": "streamable-http",
      "url": "https://x402broker.com/mcp"
    }
  }
}
```

## Usage

```python
import urllib.request, json
req = urllib.request.Request("https://x402broker.com/v1/try/x402-broker")
with urllib.request.urlopen(req) as resp:
    print(json.loads(resp.read().decode()))
```

## Sitemap

See the full [sitemap](https://x402broker.com/sitemap.md) for all pages on x402broker.com:

- [Home](https://x402broker.com): Overview, live tool explorer, and interactive sandbox
- [Pricing & Plans](https://x402broker.com/pricing): Free sandbox, $0.002/call x402 micropayments, Pro, and Enterprise SLA
- [Sign Up](https://x402broker.com/signup): Developer & autonomous agent registration
- [Contact Us](https://x402broker.com/contact): Enterprise SLA & engineering support
- [Glossary](https://x402broker.com/glossary): Protocol definitions (x402, IETF MPP, L402, A2A, MCP, ERC-8004, OASF)