# X402-BROKER Universal MCP/A2A/x402 Meta-Router Execute

> X402-BROKER Universal MCP/A2A/x402 Meta-Router Execute is a paid API for AI agents from x402broker.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Routes and executes requests across 7,340+ indexed live capabilities spanning MCP servers, x402 APIs, and A2A agents via a single unified broker endpoint

## Facts

- Endpoint: GET https://x402broker.com/v1/broker/execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-broker-universal-mcp-a2a-x402-meta-router-execute-0760fee8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v_CYVgBoyCXzpGUlc_TLr

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 x402-broker-universal-mcp-a2a-x402-meta-router-execute-0760fee8
```

Example prompt: Search the X402-BROKER marketplace for a live capability that can summarize a webpage, then execute it with a GET request using the query 'summarize URL content' and return the result.

## When to prefer this

Choose this endpoint when you need to dynamically discover and execute the best available tool from a large indexed catalog without knowing the specific API in advance, especially when operating in an agentic context where tool selection should be automated. Prefer it over hardcoding individual API calls when the task domain may be served by multiple competing capabilities, or when you want TDQS quality-scored routing with built-in x402/L402 payment handling across EVM chains.

## Known failure modes

- No matching capability found for query — returns empty data or error status
- Payment failure if USDC balance insufficient for $0.01 per-call fee
- Upstream MCP server or A2A agent is offline or rate-limited
- Malformed input schema — missing required 'type' or 'method' fields returns validation error
- Quality score threshold not met — TDQS filtering may exclude low-quality capabilities
- Ambiguous query returns wrong capability match

## How this service works

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.

## Output

Returns a JSON object containing a `data` field with the proxied capability's response, a `status` field (e.g. 'ok'), and an `roi_proof` object including a compression_ratio_pct indicating how much token/data reduction was achieved relative to calling underlying APIs directly.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "query": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-broker-universal-mcp-a2a-x402-meta-router-execute-0760fee8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)