# AgentDiet X402-BROKER MCP Gateway

> AgentDiet X402-BROKER MCP Gateway is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Routes and executes HTTP requests against 31,390+ MCP servers, x402 APIs, and A2A agents, settling payments in USDC on Base

## Facts

- Endpoint: GET https://mcp-gateway.agentdiet.dev/v1/broker/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/agentdiet-x402-broker-mcp-gateway-a5484b28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3wH0qSLneu62rSNUmlP_Z

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 agentdiet-x402-broker-mcp-gateway-a5484b28
```

Example prompt: Route this GET query through the MCP gateway broker to search for weather data — use the query 'current temperature in San Francisco' and settle the $0.01 USDC fee on Base.

## When to prefer this

Choose this endpoint when an AI agent needs a single, unified gateway to access a large catalog of MCP servers, x402 APIs, or A2A agents without maintaining individual integrations, and when USDC micropayment settlement on Base is acceptable. Prefer this over direct MCP server integration when breadth of access (31,390+ servers) matters more than deep, specialized integration with a single provider.

## Known failure modes

- Insufficient USDC balance on Base — payment settlement fails
- Invalid or unsupported HTTP method passed (only GET or POST allowed)
- Missing required 'input.type' or 'input.method' fields — schema validation error
- Target MCP server or x402 API unavailable or rate-limited
- Query parameter malformed or empty — downstream execution fails
- Network timeout reaching mcp-gateway.agentdiet.dev

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with a 'data' field containing the execution result, a 'status' field (e.g. 'ok'), and an 'roi_proof' object including a compression_ratio_pct metric (e.g. 91.4%) demonstrating efficiency of the brokered call.

## 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/agentdiet-x402-broker-mcp-gateway-a5484b28/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-gateway.agentdiet.dev](https://www.zero.xyz/host/mcp-gateway.agentdiet.dev/llms.txt)