# 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 2026-10-28).

Searches and routes queries across 500+ indexed MCP servers and A2A tools via a single connection, with token compression and prompt injection protection

## Facts

- Endpoint: POST https://token-intel.agentdiet.dev/v1/tool-broker?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- 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-bb5f497a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pW4pSmNLie-XTCMpKsZbW

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-bb5f497a -d '<json body>'
```

Example prompt: Search the MCP tool index for anything that can do context compression or token reduction — I want to find available servers I can route through.

## When to prefer this

Choose this endpoint when an AI agent needs to discover, search, or route to one of hundreds of MCP servers or A2A tools without maintaining separate connections to each — especially useful when token budget is limited (85% compression) and when prompt injection safety is a concern. Prefer over direct MCP connections when operating in a multi-tool swarm context or when the target tool is unknown and needs to be discovered dynamically.

## Known failure modes

- Empty or too-vague query returns no matches
- Query triggers prompt-guard firewall and is blocked
- Downstream MCP server unavailable causing routing failure
- Payment not completed (x402 required) resulting in 402 response
- Malformed query schema returns 400 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/tool-broker)

## Output

Returns a list of matched MCP servers or A2A tools relevant to the query, including compressed tool descriptions (up to 85% token reduction), routing metadata, and safety-filtered results via the Prompt-Guard firewall

## 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-bb5f497a/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)