# 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 2026-10-23).

Meta-router that indexes 500+ MCP servers and A2A tools, routes queries to the right tool with 85% token compression, and enforces a Prompt-Guard firewall on all responses

## Facts

- Endpoint: POST https://github-audit.agentdiet.dev/v1/broker/execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-59da1b46
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Q-QkQ4CLxXhtY0PIxICF

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-59da1b46 -d '<json body>'
```

Example prompt: Search across all MCP servers and A2A tools you know about to find the best capability for 'GitHub security audit' — route me to the right tool and give me a compressed, safe-proxied result.

## When to prefer this

Choose this endpoint when you need a single connection point to discover and proxy across hundreds of MCP servers or A2A tools without maintaining individual integrations, especially when token budget is tight (85% compression) or when prompt injection safety is a concern for untrusted tool outputs.

## Known failure modes

- Query returns no matching tools if the capability string is too vague or niche
- Prompt-Guard firewall may block or sanitize responses containing adversarial content
- Token compression may lose nuance for very structured or code-heavy outputs
- Endpoint URL verification may fail for private or authentication-gated tools
- Payment not processed (x402 flow failure) resulting in 402 response with no output

## 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/broker/execute)

## Output

A JSON object containing matched tool metadata, routed tool output (compressed to ~85% fewer tokens), firewall-cleared response text, and routing decisions indicating which MCP server or A2A tool was selected

## 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-59da1b46/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)