# 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 an index of 500+ MCP servers and A2A agent tools by capability query, returning token-compressed results filtered through a Prompt-Guard firewall.

## Facts

- Endpoint: GET https://shopify-intel.agentdiet.dev/api/mcp/audit?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-cb7744e7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XWmeyQBySkCo4I62CUcCp

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-cb7744e7
```

Example prompt: Search the MCP tool index for any servers that handle 'GitHub security audits' — I need to find a capable tool I can route my agent through.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover and route to one of hundreds of MCP or A2A tools by capability description, especially when token efficiency matters and when safety filtering of tool metadata is required. Prefer it over maintaining a static tool registry or manually curating MCP server lists.

## Known failure modes

- Missing or empty 'query' parameter returns a 400 validation error
- Query matches no indexed tools returns an empty result set
- Payment not provided or invalid triggers HTTP 402 payment required
- Firewall flags query as potentially adversarial and blocks the request
- Upstream MCP index unavailable causes 503 or timeout

## 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/api/mcp/audit)

## Output

Returns a token-compressed list of matching MCP servers and A2A tools relevant to the capability query, including metadata about each tool's function, filtered through a Prompt-Guard firewall to remove unsafe or malicious results. The response object contains ranked tool matches with capability 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-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-cb7744e7/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)