# 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-intel.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches across 500+ indexed MCP servers and A2A tools via a single query, returning capability matches with token-compressed results and prompt-injection protection.

## Facts

- Endpoint: GET https://shopify-intel.agentdiet.dev/v1/a2a-router?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: shopify-intel.agentdiet.dev
- Website: https://shopify-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-c970ad75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_geBQKZqzVbTU0yqdzNJH6

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-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-c970ad75
```

Example prompt: Search the MCP and A2A tool index for anything that handles 'SEC filings' or 'company enrichment' — I want to know which servers are available and what they can do.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover and route to appropriate MCP servers or A2A tools at runtime, rather than hardcoding tool connections. Particularly useful when building meta-agents or swarms that need to find the best available capability for a given task across a large index, or when you need prompt-injection-safe proxying through a single connection point.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for obscure or misspelled capability queries
- Endpoint URL verification may fail if target is offline or non-compliant
- Rate limiting or payment failure (HTTP 402) if x402 credentials are missing or exhausted
- Overly broad queries may return low-relevance results across the 500+ index

## 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-intel.agentdiet.dev/v1/a2a-router)

## Output

A token-compressed list of matching MCP servers and A2A tools relevant to the query, including capability metadata and endpoint details, filtered through a Prompt-Guard firewall to prevent injection attacks.

## 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-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-c970ad75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-intel.agentdiet.dev](https://www.zero.xyz/host/shopify-intel.agentdiet.dev/llms.txt)