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

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

## Facts

- Endpoint: GET https://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: agentdiet.dev
- Website: https://agentdiet.dev
- Canonical page: https://www.zero.xyz/c/agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-b8222c35
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_x5yPYN9BbM2sxKQ-cCdZQ

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 agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-b8222c35
```

Example prompt: Search the agentdiet meta-router for MCP tools that handle SEC filings or company enrichment — I want to find the best single-connection route to those capabilities.

## When to prefer this

Use this endpoint when an agent needs to dynamically discover and route to the right MCP server or A2A tool from a large index without maintaining individual connections to each. Ideal for multi-agent orchestration pipelines that need token-efficient tool discovery with built-in safety filtering.

## Known failure modes

- Missing or empty query parameter returns validation error
- No matching tools found for obscure or overly narrow capability queries
- Firewall blocks queries flagged as prompt injection attempts
- Upstream MCP index unavailable causes empty or degraded results
- Payment not settled via x402 results in 402 Payment Required response

## 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://agentdiet.dev/v1/workflows/code-release-security-gate)

## Output

Returns a list of matching MCP servers or A2A tools relevant to the query, including routing metadata, compressed tool descriptions, and endpoint identifiers, filtered through the Prompt-Guard firewall for safety.

## 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/agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-b8222c35/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdiet.dev](https://www.zero.xyz/host/agentdiet.dev/llms.txt)