# 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 tool metadata through a Prompt-Guard firewall proxy.

## Facts

- Endpoint: GET https://company-enrich.agentdiet.dev/v1/x402-gateway?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-bf1a76a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5ZRBWE2RL5to5eQTMnk2b

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-bf1a76a7
```

Example prompt: Search the MCP tool meta-index for any servers or A2A tools that handle 'company enrichment' — I need to find the right capability to enrich B2B lead data.

## When to prefer this

Choose this endpoint when you need to discover which of 500+ MCP servers or A2A tools supports a given capability without connecting to each individually, especially when token efficiency matters (85% compression) or when you need a safe-proxy firewall layer (Prompt-Guard) between your agent and untrusted tool endpoints. Prefer this over manual MCP registry lookups when orchestrating multi-tool swarms.

## Known failure modes

- Empty query string returns validation error (minLength:1 not met)
- Query matches no indexed tools returns empty result set
- Firewall (Prompt-Guard) blocks query flagged as adversarial
- Upstream MCP server unavailable causes partial results
- x402 payment failure prevents access to gated results
- Generic or ambiguous queries may return low-relevance matches

## 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/x402-gateway)

## Output

Returns a structured object listing matched MCP servers or A2A tools relevant to the capability query, including compressed tool metadata (with up to 85% token reduction) and safe-proxy routing details, filtered through the Prompt-Guard firewall.

## 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-bf1a76a7/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)