# 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 routes across 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/mcp-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-ff0113cf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cgbfumlPt2P658KmXxmET

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-ff0113cf
```

Example prompt: Can you search the MCP router for tools that handle GitHub security audits and return the best matching server with a compressed description?

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover and route to MCP servers or A2A tools from a large index without maintaining individual server connections — especially useful when token budget is limited (85% compression), when security filtering is needed (Prompt-Guard), or when the right tool isn't known in advance and needs to be searched across 500+ options at once.

## Known failure modes

- No matching tools found for the given query — returns empty result set
- Query too vague or too broad, returning low-relevance results
- Indexed server is offline or unreachable at routing time
- Payment (x402) not accepted or insufficient — returns 402 error
- Prompt injection attempt blocked by Prompt-Guard firewall

## 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/mcp-router)

## Output

Returns matching MCP server listings or A2A tool entries from a 500+ tool index, with 85% token-compressed descriptions and Prompt-Guard firewall-filtered results, including endpoint metadata and routing information.

## 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-ff0113cf/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)