# Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router

> Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router is a paid API for AI agents from shopify-spy.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches and routes across 500+ MCP servers and A2A tools via a single connection, with token compression and prompt-injection firewall.

## Facts

- Endpoint: GET https://shopify-spy.agentdiet.dev/v1/bundle-execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-0a765b99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n7-_6rUNVliPpoGBura9h

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 shopify-spy-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-0a765b99
```

Example prompt: Search your tool index for any MCP servers or A2A agents that handle SEC filings or company enrichment — I want to route my next query through whatever has the best coverage.

## When to prefer this

Choose this endpoint when you need to dynamically discover which MCP servers or A2A tools are available for a given capability before routing agent tasks, especially in multi-agent swarm architectures where you want a single meta-router rather than hardcoding individual tool connections. Prefer this over direct tool calls when you don't know which tool to use and need capability-based search across a broad index.

## Known failure modes

- Empty or vague query returns no meaningful matches
- Query for a niche capability not covered by the 500+ indexed servers returns empty results
- Endpoint URL verification fails if the URL is not indexed
- Rate limiting or payment failure (x402) blocks the request
- Prompt-Guard firewall may filter or modify results containing suspicious content

## How this service works

Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall. (Live x402 v2, IETF MPP & MCP endpoint at https://shopify-spy.agentdiet.dev/v1/bundle-execute)

## Output

Returns a structured result set of matched MCP servers and A2A tools relevant to the query, with token-compressed schemas and routing metadata, filtered through a Prompt-Guard firewall to prevent prompt-injection from tool descriptions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "query": {
   "type": "string",
   "minLength": 1,
   "description": "Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/shopify-spy-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-0a765b99/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)