# 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 2026-10-21).

Searches across 500+ indexed MCP servers and A2A tools by capability query, returning compressed, firewall-filtered endpoint matches via a single meta-router connection

## Facts

- Endpoint: GET https://token-intel.agentdiet.dev/v1/agent-router?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-0fe97393
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_47FtxBnLtIZXDVbr3Aawv

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-0fe97393
```

Example prompt: Search the MCP and A2A tool index for endpoints that handle 'SEC filings' — I want to find the best available tool for pulling company financial documents from agent-callable APIs.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools support a given capability without maintaining its own tool registry. Prefer it over manual tool catalogs or static lists when the tool ecosystem changes frequently, when token efficiency matters (85% compression claim), or when you need a safety-filtered proxy layer before routing to unknown third-party agents.

## Known failure modes

- Empty or too-short query returns no useful results
- Query too broad returns noisy or irrelevant tool matches
- Queried endpoint URL not present in the index returns empty match
- Prompt-Guard firewall may block queries deemed unsafe or adversarial
- Service may be unavailable or return errors if upstream index is stale

## 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/agent-router)

## Output

Returns a filtered, token-compressed list of matching MCP server endpoints or A2A tools relevant to the capability query, including metadata about each tool and firewall-screening status. The response is a generic JSON object containing matched tools from a 500+ server index.

## 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-0fe97393/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)