# AgentDiet MCP Gateway Execution Broker

> AgentDiet MCP Gateway Execution Broker 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 queries across 31,390+ MCP servers, x402 APIs, and A2A agents, returning structured results settled in USDC on Base.

## Facts

- Endpoint: GET https://mcp-gateway.agentdiet.dev/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/agentdiet-mcp-gateway-execution-broker-f2847d46
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ka4QHkd8pRaIPJEYKbYP1

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-mcp-gateway-execution-broker-f2847d46
```

Example prompt: Send a GET query through the AgentDiet MCP gateway broker asking 'what is the current Bitcoin price' and return the structured result — it can route to any of its 31,000+ MCP servers to find the answer.

## When to prefer this

Choose this endpoint when you need a single unified gateway to access thousands of MCP servers, x402 APIs, or A2A agents without managing individual integrations. Ideal for agents that need broad tool coverage without hardcoding specific MCP endpoints, or when you want deterministic execution with USDC micropayment settlement on Base and a compression-optimized response.

## Known failure modes

- Insufficient USDC balance or failed payment settlement on Base — payment required error
- Invalid input type (must be 'http') or missing method field — schema validation error
- Upstream MCP server or agent unavailable — gateway timeout or upstream error in data field
- Malformed query parameter — empty or null query returns degraded results
- No matching MCP server found for the query — empty data response with ok status

## 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

A JSON object with a 'status' field (e.g. 'ok'), a 'data' object containing the response payload from the routed MCP server or agent, and an 'roi_proof' object including a compression_ratio_pct metric indicating how much the response was compressed.

## 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-mcp-gateway-execution-broker-f2847d46/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)