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

Searches and routes across 500+ MCP servers and A2A tools with token compression and prompt injection firewall via a single query

## Facts

- Endpoint: GET https://hn-pulse.agentdiet.dev/v1/bundle-execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: hn-pulse.agentdiet.dev
- Website: https://hn-pulse.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-409dd010
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_omgYYLr5mDOqMO4rxTHan

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 hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-409dd010
```

Example prompt: Search the MCP and A2A tool index for capabilities related to 'SEC filings' — I want to find which servers handle that and get a compressed list of what they offer.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools can handle a given capability, rather than hardcoding tool connections. Ideal for meta-agent orchestrators, swarm coordinators, or agent builders who want a single connection point to a broad tool ecosystem with built-in safety filtering and token-efficient responses.

## Known failure modes

- Empty or vague query returns no meaningful results
- Query too broad may return too many loosely related tools
- Endpoint URL verification may time out if target server is unreachable
- Some MCP servers in the index may be stale or offline
- Prompt injection attempts in query are blocked by firewall, returning an error or sanitized response

## 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://hn-pulse.agentdiet.dev/v1/bundle-execute)

## Output

Returns a list of matching MCP servers and A2A tools relevant to the query, with compressed capability descriptions (85% token reduction) and safety-filtered results via the Prompt-Guard firewall. May include endpoint URLs, tool names, supported operations, and routing metadata.

## 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/hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-409dd010/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hn-pulse.agentdiet.dev](https://www.zero.xyz/host/hn-pulse.agentdiet.dev/llms.txt)