# 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 2026-10-23).

Searches 500+ indexed MCP servers and A2A tools by capability query and returns token-compressed, prompt-injection-safe tool discovery results

## Facts

- Endpoint: POST https://company-enrich.agentdiet.dev/v1/tool-broker?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-8281865f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e-oKCzZeuIDOaLDTz8P8A

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-8281865f -d '<json body>'
```

Example prompt: Search the MCP and A2A tool index for anything that can handle 'company enrichment' — I need to find an available tool with low token overhead and make sure it passes prompt-injection checks before I call it.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover the right MCP server or A2A tool at runtime rather than hard-coding a specific API. Especially valuable when building multi-agent swarms that need safe, token-efficient tool routing, or when you want a single connection point that indexes 500+ tools with built-in prompt-injection protection. Prefer this over manually curated tool lists when the target capability may be served by multiple providers and you want the best available match.

## Known failure modes

- Empty or vague query returns low-confidence or no matches
- Unindexed or unknown endpoint URL returns not-found result
- Prompt-Guard firewall blocks a legitimate tool if its description resembles an injection pattern
- Payment failure (HTTP 402) if x402 USDC micropayment is not correctly attached
- Timeout if upstream MCP servers are slow to respond during index refresh

## 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/tool-broker)

## Output

Returns a token-compressed (up to 85% reduction) list of matching MCP servers or A2A tools relevant to the query, including metadata about each tool's capabilities, filtered through a Prompt-Guard firewall to block prompt-injection payloads embedded in tool descriptions or responses.

## 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-8281865f/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)