# 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 a meta-index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered routing results via a single connection.

## Facts

- Endpoint: GET https://github-audit.agentdiet.dev/v1/swarm-execute?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-da0fac99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6L1wkYVuj9FYJUTLurGE2

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-da0fac99
```

Example prompt: Search the swarm index for MCP tools that support GitHub security auditing — I want to find what's available and route my agent to the right one.

## When to prefer this

Choose this endpoint when you need to discover or route to one of hundreds of MCP or A2A tools without managing individual server connections. It is especially useful when you don't know which specific MCP server handles a given capability, want a single connection point for multi-tool agent workflows, or need token-compressed results to stay within context limits. Prefer alternatives if you need to call a specific known MCP endpoint directly or require real-time streaming from an individual server.

## Known failure modes

- Missing or empty 'query' parameter returns a validation error
- No matching tools found for the query returns an empty result set
- Upstream MCP servers in the index may be offline or unresponsive
- Payment not received (HTTP 402) if x402 payment is not attached
- Prompt-Guard firewall may block queries flagged as adversarial or malicious
- Malformed endpoint URL input for verification may return an error or null result

## 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/swarm-execute)

## Output

Returns a compressed, Prompt-Guard-filtered list of matching MCP servers or A2A tools from a 500+ item index, including routing metadata, capability summaries, and any relevant endpoint URLs — with up to 85% token compression applied to the response.

## 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-da0fac99/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)