# 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 and routes to 500+ MCP servers and A2A tools via a single connection, with token compression and prompt injection firewall.

## Facts

- Endpoint: GET https://cve-intel.agentdiet.dev/v1/security-audit-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-43c98bab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FhXEy7IoiOtmNKQ9STNpk

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-43c98bab
```

Example prompt: Search the MCP tool index for any servers or A2A tools that handle GitHub security audits and route me to the best match with token-compressed results.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability without hardcoding individual server URLs. Especially useful when building swarm agents that need single-connection access to hundreds of tools, when token budget is a concern (85% compression), or when prompt injection safety for tool routing is required.

## Known failure modes

- No matching tools found for the query — returns empty result set
- Query too vague or malformed — returns error or low-relevance matches
- Downstream MCP server unavailable — routing fails with timeout or connectivity error
- Prompt-Guard firewall blocks a query flagged as potentially adversarial
- Payment not processed — x402 payment required error returned

## 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/security-audit-dag)

## Output

Returns a list of matching MCP servers or A2A tools relevant to the query, with token-compressed metadata (up to 85% compression) and prompt-injection-filtered output indicating which endpoints are available and how to connect to them.

## 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-43c98bab/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)