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

Searches and proxies 500+ MCP servers and A2A agent tools via a single connection with token compression and prompt injection firewall

## Facts

- Endpoint: GET https://github-audit.agentdiet.dev/v1/agent-router?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: github-audit.agentdiet.dev
- Website: https://github-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-b2a3f2cf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2pH3vO7m0AMPZmSggIM9P

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 github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-b2a3f2cf
```

Example prompt: Search the agent-router index for any available MCP or A2A tools that handle GitHub security auditing — I need to find a safe, compressed endpoint I can call without setting up separate connections.

## When to prefer this

Choose this endpoint when you need a single unified interface to discover and proxy across 500+ heterogeneous MCP servers and A2A tools without managing individual connections, especially when token budget is limited or prompt injection risk is a concern. Less suitable if you already know the exact endpoint URL and just need to call it directly.

## Known failure modes

- query parameter missing or empty — returns 400 validation error
- no matching tools found for query — returns empty results set
- upstream MCP server unavailable — routing failure or degraded result
- Prompt-Guard blocks a suspected injection in the query — request rejected
- payment not fulfilled (x402) — returns 402 Payment Required

## 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://github-audit.agentdiet.dev/v1/agent-router)

## Output

Returns a structured object listing matching MCP servers or A2A tool endpoints relevant to the query, with compressed metadata and safety screening applied via the Prompt-Guard firewall

## 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/github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-b2a3f2cf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from github-audit.agentdiet.dev](https://www.zero.xyz/host/github-audit.agentdiet.dev/llms.txt)