# 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 2026-10-23).

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

## Facts

- Endpoint: POST https://llms-generator.agentdiet.dev/v1/crypto-alpha-dag?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-2eb928c5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wSsJRM83XRr2xxwzHRPde

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-2eb928c5 -d '<json body>'
```

Example prompt: Search for MCP tools or A2A agents that can handle SEC filings and company enrichment — I want to find the best available endpoint from across the 500+ indexed servers.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability without hardcoding individual tool endpoints. Ideal for swarm orchestration, meta-agent routing, or when building systems that need to select the best available tool at runtime across a large ecosystem of 500+ servers. Prefer over direct tool calls when the right tool is unknown in advance.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for niche or unsupported capability queries
- Prompt-Guard firewall blocks queries that resemble injection attempts
- Upstream MCP server index temporarily unavailable causing partial results
- Query too vague returns overly broad or irrelevant tool matches

## 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/crypto-alpha-dag)

## Output

Returns a list of matched MCP servers and/or A2A tools relevant to the query, with endpoint metadata, capability descriptions, and compressed context — filtered through a Prompt-Guard firewall to prevent injection attacks. Results may include endpoint URLs, tool names, pricing, and routing instructions.

## 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-2eb928c5/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)