# 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 workflows.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 via a single connection, with token compression and prompt injection protection

## Facts

- Endpoint: GET https://workflows.agentdiet.dev/v1/swarm-execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: workflows.agentdiet.dev
- Website: https://workflows.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/workflows-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f4e31557
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w_rsORv8HEvWf0iqhpx1j

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 workflows-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f4e31557
```

Example prompt: Search the swarm router for any MCP servers or A2A tools that handle SEC filings or company financial data enrichment — I need to find available endpoints I can connect to for that capability.

## When to prefer this

Use this endpoint when you need a single-connection gateway to discover and route across a large ecosystem of MCP servers and A2A tools without managing individual connections, especially when token efficiency and prompt injection safety are priorities. Prefer this over direct MCP server connections when you don't know which specific tool handles your capability or when you need a vetted, compressed meta-index of available agents.

## Known failure modes

- Missing or empty query string returns a 400 validation error
- No matching tools found for obscure or overly specific queries
- Payment required (HTTP 402) if x402 micropayment header is absent or malformed
- Prompt injection attempt blocked by Prompt-Guard firewall with rejection response
- Upstream MCP server unavailable causes partial or empty 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://workflows.agentdiet.dev/v1/swarm-execute)

## Output

Returns a list of matching MCP servers or A2A tools relevant to the query, with compressed metadata about each endpoint's capabilities, along with safety/firewall status from the Prompt-Guard layer

## 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/workflows-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f4e31557/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workflows.agentdiet.dev](https://www.zero.xyz/host/workflows.agentdiet.dev/llms.txt)