# 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 cve-intel.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-28).

Searches and routes across 500+ MCP servers and A2A tools via a single meta-router endpoint with token compression and prompt injection firewall

## Facts

- Endpoint: POST https://cve-intel.agentdiet.dev/v1/mcp-gateway?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Provider: cve-intel.agentdiet.dev
- Website: https://cve-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/cve-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b8c7048a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v-uR76A7tdHR3QHbVigkd

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 cve-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b8c7048a -d '<json body>'
```

Example prompt: Search for MCP tools that can do SEC filings or company enrichment — I want to find what's available across the 500+ indexed servers and route my request safely through the gateway.

## When to prefer this

Choose this endpoint when you need to discover and route to any of 500+ MCP servers or A2A tools from a single connection, especially when token efficiency is critical, prompt injection safety is required, or you want to avoid managing multiple individual tool connections. Prefer over direct tool calls when building swarm architectures or when you don't know which specific tool to use and need capability-based search.

## Known failure modes

- Query too vague — returns empty or low-relevance tool matches
- Endpoint URL not found in index — verification returns no results
- Prompt-Guard firewall blocks a query flagged as potentially adversarial
- Payment required error (HTTP 402) if x402 USDC micropayment not included
- Malformed query (minLength violation) returns validation error
- Downstream MCP server unavailable during proxy routing

## 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://cve-intel.agentdiet.dev/v1/mcp-gateway)

## Output

Returns a JSON object listing matching MCP servers or A2A tools relevant to the query, including endpoint metadata, capability descriptions, and proxied responses — all with 85% token compression applied and prompt injection filtering via the built-in Prompt-Guard firewall.

## 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/cve-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b8c7048a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cve-intel.agentdiet.dev](https://www.zero.xyz/host/cve-intel.agentdiet.dev/llms.txt)