# 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).

Searches and routes queries across 500+ indexed MCP servers and A2A tools through a single meta-router connection with token compression and prompt safety filtering

## Facts

- Endpoint: POST https://github-audit.agentdiet.dev/v1/agent-router?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-97e1e873
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Csor9ba54j4-LxC0NcgKw

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-97e1e873 -d '<json body>'
```

Example prompt: Search for MCP tools or A2A agents that handle GitHub security auditing — I want to find the right capability from across 500+ indexed servers without having to connect to each one separately.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool is best suited for a task, rather than hard-coding a specific tool. Ideal for swarm architectures, general-purpose agent orchestrators, or any system that needs to route capability queries across a large, heterogeneous tool ecosystem without managing 500+ individual connections.

## Known failure modes

- No matching tools found for the given query — empty results returned
- Query string too vague or too short — low-confidence matches returned
- Endpoint URL verification fails if URL is not indexed or malformed
- Prompt-Guard firewall blocks adversarial or injection-like queries
- Downstream MCP server unavailable — routing error returned
- Rate limit exceeded for the $0.01/call payment tier

## 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 JSON object listing matching MCP servers or A2A tools from the 500+ indexed catalog, including tool descriptions compressed by up to 85% for token efficiency, safety-filtered through Prompt-Guard firewall, and metadata sufficient for an agent to connect and invoke the discovered capability.

## 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-97e1e873/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)