# get_unit

Get a specific measurement unit by ID.

Agent View of the PolicyLayer registry record for `get_unit`. HTML page: https://policylayer.com/tools/graysoncadams-mealie-mcp/get-unit

## Facts

- Tool: `get_unit`
- Server: Mealie MCP Server (`graysoncadams/mealie-mcp`) — https://policylayer.com/tools/graysoncadams-mealie-mcp.md
- Homepage: https://github.com/GraysonCAdams/mealie-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": "get_unit",
    "arguments": {}
  }
}
```

## Why get_unit is rated Low

This tool retrieves metadata about a measurement unit without side effects. It is a straightforward read operation that queries existing data. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal—an agent could only access information about measurement units that already exist in the system.

From the tool's own definition: "Tool name is 'get_unit' and description states 'Get a specific measurement unit by ID' — uses 'Get' verb indicating retrieval operation with no modification."

## Use case

AI agents call get_unit to retrieve information from Mealie MCP Server 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 Mealie MCP Server:

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

## Other tools on Mealie MCP Server (92)

- `delete_category` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-category.md
- `delete_comment` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-comment.md
- `delete_cookbook` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-cookbook.md
- `delete_food` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-food.md
- `delete_label` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-label.md
- `delete_mealplan` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-mealplan.md
- `delete_recipe` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-recipe.md
- `delete_shopping_list` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-shopping-list.md
- `delete_shopping_list_item` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-shopping-list-item.md
- `delete_shopping_list_items_bulk` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-shopping-list-items-bulk.md
- `delete_tag` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-tag.md
- `delete_tool` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-tool.md
- `delete_unit` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/delete-unit.md
- `remove_recipe_from_shopping_list` — Destructive — https://policylayer.com/tools/graysoncadams-mealie-mcp/remove-recipe-from-shopping-list.md
- `parse_ingredient` — Execute — https://policylayer.com/tools/graysoncadams-mealie-mcp/parse-ingredient.md
- `parse_ingredients` — Execute — https://policylayer.com/tools/graysoncadams-mealie-mcp/parse-ingredients.md
- `get_all_mealplans` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-all-mealplans.md
- `get_categories` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-categories.md
- `get_category` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-category.md
- `get_category_by_slug` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-category-by-slug.md
- `get_cookbook` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-cookbook.md
- `get_cookbooks` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-cookbooks.md
- `get_current_user` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-current-user.md
- `get_empty_categories` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-empty-categories.md
- `get_empty_tags` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-empty-tags.md
- `get_food` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-food.md
- `get_foods` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-foods.md
- `get_household_statistics` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-household-statistics.md
- `get_label` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-label.md
- `get_labels` — Read — https://policylayer.com/tools/graysoncadams-mealie-mcp/get-labels.md
- …and 62 more: https://policylayer.com/tools/graysoncadams-mealie-mcp.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`

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