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

Searches and routes queries across 500+ indexed MCP servers and A2A tools with token-compressed results and prompt-injection firewall protection.

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/bundle-execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mesh.agentdiet.dev
- Website: https://mesh.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mesh-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-c584e672
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mH1rOzn6v8OaATaAvMe4i

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 mesh-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-c584e672
```

Example prompt: Search the AgentDiet mesh router for any available MCP servers or A2A tools that handle 'SEC filings' — I need to find the right capability to route my query through.

## When to prefer this

Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability rather than hardcoding a specific tool. It is especially useful in multi-agent swarm architectures where the right downstream tool is not known in advance, or when you need a safe-proxied, token-efficient interface to a large tool ecosystem without managing 500+ individual connections.

## Known failure modes

- Empty results if query is too niche or no indexed tools match the capability
- Payment required error (HTTP 402) if x402 micropayment is not provided or fails
- Firewall rejection if query triggers prompt-injection detection heuristics
- Timeout if the meta-router cannot reach indexed upstream MCP servers in time
- Malformed query error if the 'query' parameter is missing or empty

## 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://mesh.agentdiet.dev/v1/bundle-execute)

## Output

Returns a token-compressed list of matching MCP servers or A2A tools relevant to the query, including endpoint metadata, capability descriptions, and firewall-cleared routing information. Results are filtered through a Prompt-Guard firewall and compressed to approximately 85% fewer tokens than raw responses.

## 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/mesh-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-c584e672/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mesh.agentdiet.dev](https://www.zero.xyz/host/mesh.agentdiet.dev/llms.txt)