# matrix_chain_order

Find the optimal parenthesization for matrix chain multiplication to minimize scalar multiplications.

Agent View of the PolicyLayer registry record for `matrix_chain_order`. HTML page: https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server/matrix-chain-order

## Facts

- Tool: `matrix_chain_order`
- 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: 1 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `dimensions` | array | yes | Array of matrix dimensions. For N matrices, provide N+1 values: [r1, c1/r2, c2/r3, ..., cN] |

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": "matrix_chain_order",
    "arguments": {
      "dimensions": []
    }
  }
}
```

## Why matrix_chain_order is rated Low

This is a pure computational/mathematical utility that retrieves or derives information from input data. It performs no side effects, does not execute arbitrary code or external commands, does not modify any data, and does not create, delete, or move resources. The operation is deterministic and stateless, making it a Read category tool with low severity.

From the tool's own definition: "The tool 'matrix_chain_order' performs a computational analysis to 'find the optimal parenthesization for matrix chain multiplication to minimize scalar multiplications.' This is a read-only algorithmic computation that takes input parameters and returns an…"

## Use case

AI agents call matrix_chain_order 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": {
    "matrix_chain_order": {}
  }
}
```

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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