# 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 and routes queries across 500+ indexed MCP servers and A2A tools, returning compressed capability results through a prompt-guard-filtered meta-router.

## Facts

- Endpoint: GET https://company-enrich.agentdiet.dev/api/mcp/audit?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-f6dfa858
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jJ_akiBLhaJOjz4-7dRbp

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-f6dfa858
```

Example prompt: Search the MCP tool index for any servers that handle 'company enrichment' or 'B2B lead data' — I want to find the best available capability for enriching a list of business domains.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool can handle a given capability, rather than hardcoding a specific tool. Ideal for meta-agent orchestration, swarm routing, and situations where the right downstream tool is unknown at design time. The 85% token compression makes it efficient for agents operating under context limits.

## Known failure modes

- Empty query string returns validation error
- Query matches no indexed tools — returns empty result set
- Upstream MCP server temporarily unavailable — partial results returned
- Payment required (HTTP 402) if x402 micropayment not included
- Prompt-Guard firewall blocks query flagged as injection attempt

## 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/api/mcp/audit)

## Output

Returns a compressed list of matching MCP servers or A2A tool endpoints relevant to the query, including capability descriptions, filtered through a Prompt-Guard firewall. Results are token-compressed by approximately 85% compared to raw tool manifests.

## 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-f6dfa858/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)