# 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 2026-10-21).

Searches an index of 500+ MCP servers and A2A agent tools by capability query, returning compressed, firewall-screened tool matches via a single meta-router connection

## Facts

- Endpoint: GET https://cve-intel.agentdiet.dev/v1/workflows/execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-6de57f1f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v_hrEL2WhlkCZDSu8Rm2v

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-6de57f1f
```

Example prompt: Search the MCP tool index for servers that can handle SEC filings and company enrichment — I want to find the best available agent tools for those capabilities.

## 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 without maintaining its own tool registry. Ideal for swarm orchestration scenarios where the agent must find and route to specialized tools at runtime. Prefer this over hardcoded tool lists when the capability landscape is broad (500+ servers) and token efficiency matters due to the 85% compression feature.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for obscure or unsupported capability queries
- Rate limiting or payment failure (HTTP 402) if x402 payment not properly handled
- Upstream MCP server index temporarily unavailable causing partial results
- Malicious prompt injection in query blocked by Prompt-Guard firewall with rejection response

## 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/workflows/execute)

## Output

A list of matching MCP servers or A2A tool entries relevant to the capability query, with token-compressed descriptions and Prompt-Guard firewall screening applied. Results indicate which tools can fulfill the requested capability, along with relevant metadata such as endpoint URLs and capability summaries.

## 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-6de57f1f/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)