# 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 whale-momentum.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches an index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed results and prompt-injection protection.

## Facts

- Endpoint: GET https://whale-momentum.agentdiet.dev/v1/security-audit-dag?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-f9d9fa55
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QJoMnCqBA04nb2mmJsXAa

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 whale-momentum-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-f9d9fa55
```

Example prompt: Search the MCP and A2A tool index for any servers that support SEC filings or company enrichment — I want to find and route through whichever one is best.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover and route to the right MCP server or A2A tool at runtime without hardcoding specific integrations — especially useful for agent swarms needing a single connection point to 500+ tools with built-in prompt-injection protection and token compression.

## Known failure modes

- Empty or vague query returns no results or overly broad matches
- Query for a niche capability not indexed returns empty result set
- Prompt-Guard firewall blocks queries that resemble injection attempts
- Malformed endpoint URL input returns validation error
- Service may return stale index data if upstream MCP registries are out of sync

## 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://whale-momentum.agentdiet.dev/v1/security-audit-dag)

## Output

Returns a list of matched MCP servers or A2A tool entries relevant to the query, with token-compressed metadata describing each endpoint's capabilities, along with any prompt-firewall flags if the query triggered Prompt-Guard checks.

## 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/whale-momentum-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-f9d9fa55/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)