# 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 discovers and proxies 500+ MCP servers and A2A tools via a single connection, with token compression and prompt-guard firewall

## Facts

- Endpoint: POST https://github-audit.agentdiet.dev/v1/mesh/dispatch?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-2efe7289
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YAV9ePiOP3q21N6NFfNht

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-2efe7289 -d '<json body>'
```

Example prompt: Search the MCP mesh for tools that handle SEC filings or company enrichment — I want to find what's available and route through a single safe connection with token compression.

## When to prefer this

Choose this endpoint when an agent needs to discover and access multiple MCP servers or A2A tools through a single connection rather than managing individual integrations. It is especially useful when token budget is constrained (85% compression), when prompt injection protection is required, or when the agent needs to dynamically find the right tool at runtime without hardcoded endpoints. Prefer over direct MCP server calls when breadth of discovery across 500+ tools is needed.

## Known failure modes

- Query too vague — no matching tools found in the 500+ index
- Prompt-Guard firewall blocks the query if it detects injection patterns
- Invalid or unresolvable endpoint URL when used in verification mode
- Payment failure via x402 protocol results in 402 response blocking execution
- Empty or missing query field returns validation error
- Upstream MCP server unavailable causing partial results

## 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/mesh/dispatch)

## Output

A JSON object containing matching MCP server endpoints or A2A tools relevant to the query, with compressed metadata (85% token reduction), safety-filtered through the Prompt-Guard firewall, ready to be called or further routed by the agent.

## 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-2efe7289/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)