# 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 2026-10-23).

Searches and routes across 500+ indexed MCP servers and A2A tools with token-compressed, prompt-guarded proxying via a single connection

## Facts

- Endpoint: POST https://whale-momentum.agentdiet.dev/v1/b2b-osint-dag?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-b3e7fdcf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6Xfdi6G5ShB5fWwWpeIvf

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-b3e7fdcf -d '<json body>'
```

Example prompt: Search the MCP and A2A tool index for anything that can do 'company enrichment' — I need to find the right tool to plug into my agent pipeline and want the compressed, firewall-safe response.

## When to prefer this

Use this endpoint when an agent needs to discover the right MCP server or A2A tool among a large indexed catalog without maintaining separate connections to hundreds of endpoints. Ideal when token budget is constrained (85% compression), when prompt injection protection is required before routing to external tools, or when building swarm architectures that need dynamic tool selection at runtime.

## Known failure modes

- Empty or vague query returns no meaningful matches
- Query targets a capability not yet indexed among the 500+ servers
- Prompt-Guard firewall blocks a legitimate query flagged as suspicious
- Payment not processed via x402, resulting in 402 response with no data
- Upstream MCP server is offline, causing proxy routing failure
- Idempotency-Key collision causes unexpected cached response reuse

## 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/b2b-osint-dag)

## Output

Returns a structured object containing matched MCP servers or A2A tool listings relevant to the search query, with metadata such as endpoint URLs, capability summaries, and token-compressed context. May also include Prompt-Guard firewall validation results if routing through a proxied tool.

## 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-b3e7fdcf/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)