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

Searches and routes across 500+ indexed MCP servers and A2A tools via a single meta-router endpoint with token-compressed, firewall-protected responses

## Facts

- Endpoint: GET https://sec-intel.agentdiet.dev/v1/web-rag-shield-dag?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: sec-intel.agentdiet.dev
- Website: https://sec-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/sec-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-e3faed16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lWQhLVAeqpKWYyOL1d2S0

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 sec-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-e3faed16
```

Example prompt: Search the MCP tool index for any servers that handle SEC filings or company enrichment and return the best matches with compressed descriptions.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools support a given capability, rather than hardcoding tool references. It is especially useful for swarm routing, meta-orchestration, or when the agent ecosystem is unknown and you need a single connection to index 500+ tools with built-in safety filtering and token efficiency.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for obscure capability query returns empty result set
- Endpoint URL verification fails if the URL is not indexed
- Rate limiting or 402 payment required if micropayment not provided
- Overly broad queries may return too many results with low relevance

## 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://sec-intel.agentdiet.dev/v1/web-rag-shield-dag)

## Output

Returns a compressed, token-pruned list of matching MCP servers or A2A tools from a 500+ endpoint index, including capability metadata, endpoint URLs, and routing recommendations, all filtered through a Prompt-Guard firewall to remove malicious content.

## 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/sec-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-e3faed16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sec-intel.agentdiet.dev](https://www.zero.xyz/host/sec-intel.agentdiet.dev/llms.txt)