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

Searches and routes queries across 500+ indexed MCP servers and A2A tools with token compression and prompt injection firewall protection

## Facts

- Endpoint: GET https://llms-generator.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: llms-generator.agentdiet.dev
- Website: https://llms-generator.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/llms-generator-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-73c1bb06
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cIxGchkP6yp0RF_66-TTP

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 llms-generator-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-73c1bb06
```

Example prompt: Search the MCP and A2A tool index for any servers that support 'SEC filings' or 'company enrichment' — I want to find the best available tool to call for financial data on a company.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding a specific tool. Particularly useful for meta-routing scenarios, building agent swarms, or when the right downstream tool is unknown at design time. The built-in prompt injection firewall and token compression make it suitable for high-throughput or security-sensitive agent pipelines.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for obscure capability queries
- Prompt-Guard firewall may block queries flagged as injection attempts
- Upstream MCP server unavailability may reduce result set
- Rate limiting or payment failure at $0.01/call via x402

## 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://llms-generator.agentdiet.dev/v1/security-audit-dag)

## Output

Returns a list of matched MCP servers or A2A tools relevant to the query, with compressed tool manifests (up to 85% token reduction), endpoint URLs, capability descriptions, and security-filtered metadata via the Prompt-Guard firewall.

## 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/llms-generator-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-73c1bb06/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from llms-generator.agentdiet.dev](https://www.zero.xyz/host/llms-generator.agentdiet.dev/llms.txt)