# 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 agent tools via a single meta-router connection, returning compressed capability results with prompt-injection firewall protection.

## Facts

- Endpoint: GET https://shopify-intel.agentdiet.dev/v1/universal-mcp-gateway?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-d64a47be
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__jltROZzBjPs2oa8XOvfT

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-d64a47be
```

Example prompt: Search the MCP tool index for any servers that handle SEC filings or company enrichment — I need to route my agent to something that covers financial document retrieval.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to delegate a subtask to, rather than hardcoding a specific tool. Ideal for swarm architectures, multi-tool orchestration, or when the required capability is unknown at design time. Prefer it over direct MCP connections when token efficiency matters and when prompt-injection protection is required across untrusted tool outputs.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for niche query returns empty result set
- Unrecognized endpoint URL passed as query may return no verification result
- Downstream MCP server unavailability may result in partial index results
- Payment not completed (HTTP 402) blocks access entirely

## 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/universal-mcp-gateway)

## Output

Returns a compressed list of matching MCP servers and A2A tool endpoints relevant to the query, including capability descriptors, routing metadata, and prompt-firewall-screened summaries. Results are token-compressed by approximately 85% to minimize context usage.

## 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-d64a47be/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)