# 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 2026-10-23).

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

## Facts

- Endpoint: POST https://sec-intel.agentdiet.dev/api/mcp/audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-10fb17f9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xs2cp1kbAFS6fCJrIw_ch

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-10fb17f9 -d '<json body>'
```

Example prompt: Search across all indexed MCP servers and A2A tools for anything that can do 'context compression' — filter out unsafe or injection-risky endpoints and give me the top matches with token-compressed results.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover the right MCP server or A2A tool from a large index rather than hard-coding tool connections. It is especially valuable in multi-agent swarm architectures, when token budgets are tight (85% compression), when untrusted tool sources need firewall screening, or when a single connection needs to fan out across 500+ specialized tools.

## Known failure modes

- Empty or vague query returns no matches or overly broad results
- Queried endpoint URL not in the index returns a not-found response
- Prompt-Guard flags the query itself as potentially adversarial and rejects it
- Network or upstream MCP server unavailability causes partial results
- Rate limiting or payment failure (HTTP 402) if x402 credits are exhausted

## 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/api/mcp/audit)

## Output

Returns a compressed, structured list of matching MCP servers or A2A tools relevant to the query, including endpoint metadata, safety/firewall verdicts from the Prompt-Guard layer, and relevance scores — with up to 85% fewer tokens than raw tool manifests.

## 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-10fb17f9/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)