# Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (Code Release Security Gate)

> Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (Code Release Security Gate) is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches a meta-index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered results for agent tool discovery and routing.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/workflows/code-release-security-gate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-6b70a44d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pfw9jPLLDOz1KgGbqA5QK

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-6b70a44d
```

Example prompt: Search the A2A and MCP tool index for any servers that can do GitHub security auditing — I need the top matching tools with compressed metadata so I can route my agent to the right one.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to use for a given capability, rather than hardcoding a tool. Especially useful when building swarms or orchestrators that must select tools at runtime, when you want token-compressed tool metadata to reduce context overhead, or when you need a safety-filtered proxy layer between your agent and unknown MCP endpoints.

## Known failure modes

- Missing or empty 'query' parameter returns a validation error
- Query matches no tools in the index — empty results returned
- Endpoint URL verification fails if the URL is malformed or unreachable
- Service may return generic 500 errors if the backend index is unavailable
- Overly broad queries may return too many low-relevance results due to large index size

## 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/workflows/code-release-security-gate)

## Output

Returns a filtered, token-compressed list of matching MCP servers or A2A tools from the meta-index, including tool metadata and routing information, passed through a Prompt-Guard firewall for safety screening.

## 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-6b70a44d/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)