# 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 mcp-security.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches and routes across 500+ indexed MCP servers and A2A tools using a single connection, with token compression and prompt-injection firewall

## Facts

- Endpoint: GET https://mcp-security.agentdiet.dev/v1/agent-router?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mcp-security.agentdiet.dev
- Website: https://mcp-security.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-security-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-3a41db5d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vhykgF4Xogxca_0rrV32s

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 mcp-security-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-3a41db5d
```

Example prompt: Search the agentdiet meta-router for MCP tools that can do GitHub security auditing — I need a safe proxied connection with token compression enabled.

## When to prefer this

Choose this endpoint when an AI agent needs to discover the right tool from a large catalog of MCP servers and A2A agents without maintaining individual connections to each — especially useful in swarm or multi-agent architectures where token efficiency and prompt-injection safety are priorities.

## Known failure modes

- Empty or too-short query returns no results or a validation error
- Query matches no indexed tools — returns empty results set
- Endpoint URL verification fails if the URL is not in the index
- Rate limiting or payment failure via x402 if USDC balance is insufficient
- Firewall (Prompt-Guard) may block queries containing prompt-injection patterns

## 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://mcp-security.agentdiet.dev/v1/agent-router)

## Output

Returns a structured list of matched MCP servers or A2A tools relevant to the query, with endpoint metadata, compressed capability summaries, and safety/firewall status — all delivered through a single proxied connection with up to 85% token reduction.

## 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/mcp-security-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-3a41db5d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-security.agentdiet.dev](https://www.zero.xyz/host/mcp-security.agentdiet.dev/llms.txt)