# gcd_lcm_calc

Calculate GCD and LCM of two or more integers.

Agent View of the PolicyLayer registry record for `gcd_lcm_calc`. HTML page: https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server/gcd-lcm-calc

## Facts

- Tool: `gcd_lcm_calc`
- Server: UnClick (`@unclick/mcp-server`) — https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server.md
- Install: `npx -y @unclick/mcp-server`
- Homepage: https://github.com/malamutemayhem/unclick-agent-native-endpoints.git
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 3
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `a` | number | no | First integer. |
| `b` | number | no | Second integer. |
| `numbers` | string | no | Comma-separated integers (or use a and b). |

Parameters from the server's own tool schema.

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

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

## Why gcd_lcm_calc is rated Low

This tool performs a stateless mathematical calculation (Greatest Common Divisor and Least Common Multiple). It takes numeric inputs and returns computed values. There are no side effects, no data modification, no code execution, no destructive actions, and no financial implications. It is a simple read-like operation in the sense that it queries a mathematical function and returns results.

From the tool's own definition: "Tool name 'gcd_lcm_calc' and description 'Calculate GCD and LCM of two or more integers' indicate a pure mathematical computation that retrieves calculated results without modifying any data or triggering external operations."

## Use case

AI agents call gcd_lcm_calc to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches UnClick:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "gcd_lcm_calc": {}
  }
}
```

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## 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=io-github-malamutemayhem-unclick-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-malamutemayhem-unclick-mcp-server