# getCategories

Get all categories

Agent View of the PolicyLayer registry record for `getCategories`. HTML page: https://policylayer.com/tools/108yen-memo-mcp/getcategories

## Facts

- Tool: `getCategories`
- Server: Memo (`108yen/memo-mcp`) — https://policylayer.com/tools/108yen-memo-mcp.md
- Homepage: https://github.com/108yen/memo-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why getCategories is rated Low

This tool queries and returns all categories from the memo database without creating, modifying, or deleting any data. It has no side effects beyond retrieving information, making it a Read operation with low severity and minimal blast radius if misused by an AI agent.

From the tool's own definition: "Tool name 'getCategories' and description 'Get all categories' indicate a retrieval operation with no modification or deletion of data."

## Use case

AI agents call getCategories to retrieve information from Memo 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 Memo:

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

## Other tools on Memo (10)

- `deleteCategory` — Destructive — https://policylayer.com/tools/108yen-memo-mcp/deletecategory.md
- `deleteMemo` — Destructive — https://policylayer.com/tools/108yen-memo-mcp/deletememo.md
- `getCategory` — Read — https://policylayer.com/tools/108yen-memo-mcp/getcategory.md
- `getMemo` — Read — https://policylayer.com/tools/108yen-memo-mcp/getmemo.md
- `getMemos` — Read — https://policylayer.com/tools/108yen-memo-mcp/getmemos.md
- `searchMemos` — Read — https://policylayer.com/tools/108yen-memo-mcp/searchmemos.md
- `createCategory` — Write — https://policylayer.com/tools/108yen-memo-mcp/createcategory.md
- `createMemo` — Write — https://policylayer.com/tools/108yen-memo-mcp/creatememo.md
- `updateCategory` — Write — https://policylayer.com/tools/108yen-memo-mcp/updatecategory.md
- `updateMemo` — Write — https://policylayer.com/tools/108yen-memo-mcp/updatememo.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=108yen-memo-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/108yen-memo-mcp