# 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 to 500+ MCP servers and A2A agent tools via a single meta-router with token compression and prompt injection protection

## Facts

- Endpoint: GET https://mcp-security.agentdiet.dev/v1/mesh/dispatch?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-eccc583b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DqeZZOp2yFbsuc8LKQmvY

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-eccc583b
```

Example prompt: Search the MCP tool registry for anything related to 'github security auditing' and tell me which servers or A2A tools are available to handle it.

## When to prefer this

Choose this endpoint when you need to discover which MCP server or A2A agent tool supports a given capability without connecting to hundreds of individual servers. Ideal for meta-agent orchestrators that need to dynamically route subtasks to specialized tools, or when you want to safely proxy through a firewall that blocks prompt injection before forwarding to third-party agents.

## Known failure modes

- Empty query returns validation error
- No matching tools found for obscure capability query returns empty result set
- Endpoint URL verification may fail if target is unreachable
- Rate limiting or payment failure via x402 protocol returns 402 status
- Prompt injection attempts blocked by firewall may alter or truncate results

## 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/mesh/dispatch)

## Output

Returns a ranked list of matching MCP servers and A2A tools for the queried capability, with 85% token-compressed descriptions and Prompt-Guard firewall filtering applied. May include endpoint URLs, tool schemas, and routing metadata.

## 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-eccc583b/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)