# x402_research

Run comprehensive research by calling multiple x402 endpoints in parallel. Given a subject (domain, IP, address, drug name, or sport), this tool: 1. Detects the input type automatically 2. Finds all relevant x402 endpoints (local registry) 3. Calls up to 5 endpoints simultaneously with automatic payment 4. Returns all results combined for synthesis This is the fastest way to get a complete intelligence picture on any subject. Input types (auto-detected): - Domain

Agent View of the PolicyLayer registry record for `x402_research`. HTML page: https://policylayer.com/tools/8randonpickart5-x402-buyer-mcp/x402-research

## Facts

- Tool: `x402_research`
- Server: X402 Buyer (`8randonpickart5/x402-buyer-mcp`) — https://policylayer.com/tools/8randonpickart5-x402-buyer-mcp.md
- Homepage: https://github.com/8randonpickart5/x402-buyer-mcp
- Risk category: Execute (High risk)
- Registry record: grade D, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "x402_research",
    "arguments": {}
  }
}
```

## Why x402_research is rated High

This tool executes arbitrary external API calls to unknown endpoints determined dynamically based on input. The automatic payment mechanism means each call incurs financial obligations without explicit per-call approval. While Financial is a component (automatic USDC payment), the primary risk is Execute (triggering unknown external operations in parallel).

From the tool's own definition: "Tool description explicitly states it 'calls multiple x402 endpoints in parallel' and 'calls up to 5 endpoints simultaneously with automatic payment.' The phrase 'run comprehensive research by calling multiple x402 endpoints' and the fact that the server is…"

## Use case

AI agents invoke x402_research to trigger actions in X402 Buyer. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches X402 Buyer:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "x402_research": {
      "limits": [
        {
          "counter": "x402_research_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on X402 Buyer (3)

- `x402_call` — Financial — https://policylayer.com/tools/8randonpickart5-x402-buyer-mcp/x402-call.md
- `x402_balance` — Read — https://policylayer.com/tools/8randonpickart5-x402-buyer-mcp/x402-balance.md
- `x402_discover` — Read — https://policylayer.com/tools/8randonpickart5-x402-buyer-mcp/x402-discover.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=8randonpickart5-x402-buyer-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/8randonpickart5-x402-buyer-mcp