# merge_units A write tool on the Mealie MCP Server MCP server. Agent View of the PolicyLayer registry record for `merge_units`. HTML page: https://policylayer.com/tools/graysoncadams-mealie-mcp/merge-units ## Facts - Tool: `merge_units` - Server: Mealie MCP Server (`graysoncadams/mealie-mcp`) — https://policylayer.com/tools/graysoncadams-mealie-mcp.md - Homepage: https://github.com/GraysonCAdams/mealie-mcp - Risk category: Write (Medium risk) - Registry record: grade F, 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": "merge_units", "arguments": {} } } ``` ## Why merge_units is rated Medium Merging units in a recipe/cooking system implies modifying or combining existing unit entities, which is a reversible write operation. The action is not deletion (would be Destructive), code execution (would be Execute), or financial. Medium severity accounts for potential data integrity issues if units are merged incorrectly, affecting recipe measurements system-wide. From the tool's own definition: "Tool name 'merge_units' suggests combining or modifying unit records. Given the Mealie context (recipe/meal management system), this likely creates or modifies unit data, which constitutes a write operation. Empty description reduces confidence." ## Use case AI agents use merge_units to create or update resources in Mealie MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mealie MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mealie MCP Server: ```json { "version": "1", "default": "deny", "tools": { "merge_units": { "limits": [ { "counter": "merge_units_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## 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` --- 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