# 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 to 500+ MCP servers and A2A tools via a single meta-router endpoint with token compression and prompt injection protection

## Facts

- Endpoint: GET https://agentdiet.dev/v1/mesh/dispatch?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-f784676e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SNKUaIdjkfdNxIwQf2XoE

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-f784676e
```

Example prompt: Search the agentdiet mesh for MCP tools that handle 'github security auditing' — I need to find and route to the right server through the safe-proxy in one call.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover and route to one of hundreds of MCP or A2A tools without managing individual connections, especially when token efficiency matters or when prompt injection safety is a concern. It is ideal for swarm orchestration scenarios where the agent does not know in advance which tool to call.

## Known failure modes

- Empty query string returns validation error (minLength:1)
- Query matches no indexed servers — empty result set returned
- External MCP server is unreachable — routing failure with error detail
- Prompt injection detected by firewall — request blocked
- Payment not provided or x402 payment fails — 402 response blocking access

## 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/mesh/dispatch)

## Output

Returns a list of matching MCP servers or A2A tools ranked by relevance to the query, along with routing metadata, compressed context (up to 85% token reduction), and Prompt-Guard firewall status for safe proxying

## 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-f784676e/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)