# 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 2026-10-23).

Discovers and proxies calls to 500+ MCP servers and A2A tools via a single connection, with token compression and prompt injection firewall

## Facts

- Endpoint: POST https://hn-pulse.agentdiet.dev/v1/swarm-router?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-469ef1a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iGCkBYctYIWn-OOvfV4pb

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-469ef1a3 -d '<json body>'
```

Example prompt: Search the swarm router for any available MCP tools that can do B2B lead enrichment or company data lookups — I want to find what's indexed and route to the best one.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools support a given capability without maintaining its own registry, or when you want a single connection point that safely proxies to hundreds of tool providers with built-in token compression and prompt injection protection. Ideal for meta-orchestration scenarios where the specific downstream tool is not known in advance.

## Known failure modes

- Query too vague returns zero or low-relevance tool matches
- Endpoint URL verification fails if the URL is not indexed in the 500+ server registry
- Prompt-Guard firewall may block queries containing injection-like patterns
- Downstream MCP server unavailability causes routing failures
- Payment not processed (HTTP 402) if x402 micropayment is not configured correctly

## 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-router)

## Output

Returns a list of matched MCP servers or A2A tools relevant to the query, including endpoint metadata, capability descriptions, and compressed tool response data, all passed through a Prompt-Guard firewall to filter injection attempts.

## 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-469ef1a3/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)