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

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

## Facts

- Endpoint: POST https://token-intel.agentdiet.dev/v1/crypto-alpha-dag?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: token-intel.agentdiet.dev
- Website: https://token-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/token-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-6db39c72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-OuLofy4Tax3fnJAGp4aY

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 token-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-6db39c72 -d '<json body>'
```

Example prompt: Search the MCP and A2A tool index for any available servers that handle SEC filings or company enrichment — I need to find the right capability to plug into my agent pipeline.

## When to prefer this

Choose this endpoint when an agent needs to dynamically discover and route to one of hundreds of MCP servers or A2A tools without maintaining individual connections to each. It is especially useful for swarm architectures needing a single gateway, when token budget is constrained (85% compression), or when prompt injection safety is a concern. Prefer alternatives if you already know the exact MCP endpoint you need.

## Known failure modes

- Query too vague returns no matching tools
- No indexed tools match a niche capability query
- Payment not fulfilled via x402 results in 402 response
- Prompt injection attempt blocked by Prompt-Guard firewall
- Upstream MCP server unavailable causes partial results
- Malformed query string triggers validation error

## 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://token-intel.agentdiet.dev/v1/crypto-alpha-dag)

## Output

Returns a list of matched MCP servers or A2A tools relevant to the query, including metadata about each tool's capabilities, with token-compressed output and Prompt-Guard firewall applied to filter unsafe 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/token-intel-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-6db39c72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from token-intel.agentdiet.dev](https://www.zero.xyz/host/token-intel.agentdiet.dev/llms.txt)