# X402-Broker Universal Meta-Router Execute Endpoint

> X402-Broker Universal Meta-Router Execute Endpoint is a paid API for AI agents from x402broker.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Routes and executes queries against a meta-index of 7,340+ live MCP servers, x402 APIs, and A2A agents via a single unified GET/POST call with USDC micropayment

## Facts

- Endpoint: GET https://x402broker.com/v1/execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-broker-universal-meta-router-execute-endpoint-d3d8a93e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LM0qSX76Ree3_iS65ROqm

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-meta-router-execute-endpoint-d3d8a93e
```

Example prompt: Search the X402-Broker meta-index for the best tool that can summarize academic papers, then execute a GET query for 'arxiv AI agent papers 2024' against it.

## When to prefer this

Choose this endpoint when you need a single unified interface to discover and execute against thousands of MCP servers, x402 APIs, and A2A agents without managing individual integrations. It is especially useful when you do not know which specific tool is best for a task and want the broker to route to the highest-quality match using TDQS scoring. Prefer it over direct API calls when your agent operates across multiple capability domains and needs zero-fee pass-through execution with USDC micropayments.

## Known failure modes

- No matching tool found for the given query — empty data payload returned
- Payment failure or insufficient USDC balance — request rejected before execution
- Invalid input schema (missing required 'type' or 'method' fields) — validation error
- Upstream MCP server or API unavailable — timeout or error propagated in data field
- Query string too vague to route to a specific capability — low-confidence match returned

## 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 with a 'data' field containing the tool execution result, a 'status' field ('ok' on success), and an 'roi_proof' object including a compression_ratio_pct metric indicating how much token compression was achieved during routing.

## 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-meta-router-execute-endpoint-d3d8a93e/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)