# 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 through a single connection with token compression and prompt injection firewall

## Facts

- Endpoint: GET https://llms-generator.agentdiet.dev/v1/execute?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-a9e2942b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Bx81bGdAbVDhS9qU-_eYU

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-a9e2942b
```

Example prompt: Search across all indexed MCP servers and A2A tools for anything that can do 'company enrichment' or 'B2B lead data' and show me the best matches with compressed descriptions.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools exist for a given capability without maintaining its own registry. Ideal for multi-agent swarms that need single-connection access to a wide ecosystem of tools. Prefer this over manual MCP server configuration when the tool landscape is unknown or when you need built-in prompt injection protection (Prompt-Guard firewall) during tool routing.

## Known failure modes

- Empty or vague query may return low-relevance results
- Specific endpoint URL verification may fail if the target server is offline
- Token-compressed descriptions may lose nuance for complex tool capabilities
- 402 payment required error if micropayment not processed
- Index may not reflect recently added or removed MCP servers

## 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/execute)

## Output

Returns a list of matching MCP servers or A2A tools from the 500+ indexed registry, with compressed tool descriptions (85% token reduction), relevance ranking, endpoint metadata, and routing information. May also verify a specific endpoint URL if one is provided as the query.

## 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-a9e2942b/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)