# 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+ indexed MCP servers and A2A tools via a single connection, with token compression and prompt-injection firewall protection.

## Facts

- Endpoint: GET https://hn-pulse.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: 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-f3eb0775
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-UKVpJBqgdX7dycelhoFD

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-f3eb0775
```

Example prompt: Search the swarm router for any available MCP tools or A2A agents that handle SEC filings or company enrichment — I want to see what's indexed and available.

## When to prefer this

Choose this endpoint when you need to discover which MCP servers or A2A tools support a specific capability without knowing the exact endpoint in advance, or when you want a single-connection proxy that applies token compression and prompt-injection protection across a wide index of agent tools.

## Known failure modes

- Empty or vague query returns no meaningful matches
- Query for a capability not yet indexed returns empty result set
- Prompt-Guard firewall may flag and block certain query strings as injection attempts
- Payment (x402) failure results in 402 response and no data returned
- Rate limiting or downtime on the meta-router returns 5xx errors

## 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/swarm-execute)

## Output

Returns a list of matched MCP servers or A2A tool endpoints relevant to the search query, with compressed metadata (85% token reduction) and prompt-guard-filtered results indicating capability names, endpoints, and routing details.

## 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-f3eb0775/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)