# 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 alpha-stream.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).

Searches and routes across 500+ MCP servers and A2A tools via a single connection, with token compression and prompt injection firewall.

## Facts

- Endpoint: POST https://alpha-stream.agentdiet.dev/v1/bundle-execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-7e9d924b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vo7VMWRLVX1zj0rr3UiAJ

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 alpha-stream-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-7e9d924b -d '<json body>'
```

Example prompt: Search the MCP tool index for any servers that handle 'context compression' and route my query through your safe proxy so I get a filtered, token-compressed result.

## When to prefer this

Choose this endpoint when an agent needs to discover and route to one of many MCP or A2A tools without managing 500+ individual connections, especially when token budget is constrained (85% compression) or when prompt injection protection is required for untrusted inputs.

## Known failure modes

- Query returns no matching tools if the search term is too narrow or unrecognized
- Prompt-Guard firewall may block queries it flags as potentially adversarial
- Upstream MCP server unavailability may cause partial results
- Malformed or empty query string returns validation error
- Rate limiting or payment failure via x402 may reject the request

## 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://alpha-stream.agentdiet.dev/v1/bundle-execute)

## Output

Returns a compressed, firewall-filtered list of matching MCP servers or A2A tools from the 500+ indexed registry, including tool metadata, routing details, and token-compressed capability descriptions.

## 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/alpha-stream-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-7e9d924b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)