# 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 tools by capability query, returning compressed, firewall-filtered routing results for agent tool discovery

## Facts

- Endpoint: GET https://cve-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: 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-504dafe9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_grgLN90GyfFYkz3kiuO2o

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-504dafe9
```

Example prompt: Search the MCP and A2A tool index for capabilities related to 'github security auditing' and show me what servers and tools are available.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover, select, or route to an appropriate MCP server or A2A tool at runtime, especially when the full tool landscape is unknown. It is preferable over hardcoded tool lists when the agent operates across many domains and needs a single, token-efficient discovery layer with built-in safety filtering.

## Known failure modes

- Query string too vague — returns low-relevance or empty results
- Endpoint URL verification fails if target is offline or non-compliant
- Rate limiting or payment failure under x402 protocol returns 402 status
- Prompt-Guard firewall blocks adversarial or injection-laden queries
- Index may not reflect newly added MCP servers if not yet crawled

## 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/web-rag-shield-dag)

## Output

Returns a compressed manifest of matching MCP servers and A2A tools, including routing metadata, capability descriptions, and firewall/safety assessments, with up to 85% token compression applied to the results.

## 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-504dafe9/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)