# 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 company-enrich.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://company-enrich.agentdiet.dev/v1/a2a-mesh?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: company-enrich.agentdiet.dev
- Website: https://company-enrich.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/company-enrich-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-9fd7c3a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NTo0utjkD14cgYboNc_ER

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 company-enrich-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-9fd7c3a0
```

Example prompt: Search the A2A mesh index for any MCP servers or agent tools that can handle 'company enrichment' — I need to find the right endpoint to route my agent's enrichment requests through.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool handles a specific capability, rather than hardcoding a tool URL. Especially useful when orchestrating multi-agent swarms that need to find and route to specialized tools on demand. Prefer this over direct tool calls when you want token-compressed tool descriptions and prompt-injection firewall protection on the routing layer.

## Known failure modes

- Empty query string returns validation error
- Unknown or unsupported capability query returns empty result set
- Queried endpoint URL not found in the index returns no match
- Payment required (HTTP 402) if x402 auth not provided
- Index may be stale if new MCP servers were recently added
- Prompt-Guard firewall may block queries flagged as adversarial

## 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://company-enrich.agentdiet.dev/v1/a2a-mesh)

## Output

Returns a list of matching MCP servers and A2A tools relevant to the capability query, including routing metadata, token-compressed tool descriptions (85% compression claimed), and any Prompt-Guard firewall flags. May also confirm whether a specific endpoint URL is indexed and compliant.

## 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/company-enrich-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-9fd7c3a0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from company-enrich.agentdiet.dev](https://www.zero.xyz/host/company-enrich.agentdiet.dev/llms.txt)