# 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 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 tools via a single meta-router connection with token compression and prompt firewall protection

## Facts

- Endpoint: GET https://agentdiet.dev/v1/workflows/execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: agentdiet.dev
- Website: https://agentdiet.dev
- Canonical page: https://www.zero.xyz/c/agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-af7ac668
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_G1ds7Y7u0Wbia3T4uUXvt

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 agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-af7ac668
```

Example prompt: Can you search for MCP tools and A2A endpoints that handle SEC filings or company enrichment, and route me to the best one — I want something with token compression so I'm not blowing through my context window?

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover and route to one of many MCP or A2A tools without maintaining individual connections to each server — especially valuable when token budget is constrained (85% compression claimed), when security is a concern (Prompt-Guard firewall), or when the agent needs to query across a broad catalog of 500+ tools in a single call rather than polling each provider individually.

## Known failure modes

- Empty or too-broad query returns low-relevance tool matches
- Endpoint URL verification fails if remote server is offline or non-compliant
- Token compression may strip context needed for niche queries
- Prompt-Guard firewall may block valid but unusual capability queries
- 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://agentdiet.dev/v1/workflows/execute)

## Output

Returns a list of matching MCP servers and A2A tools from an index of 500+ entries, including capability metadata, routing instructions, and compressed responses filtered through a Prompt-Guard firewall to prevent prompt injection attacks.

## 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/agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-af7ac668/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdiet.dev](https://www.zero.xyz/host/agentdiet.dev/llms.txt)