Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the annotations, it discloses important behavior: the save happens immediately, gaps receive defaults, assumed items should be reported afterward, read-only accounts are blocked, and the return shape is summarized. It does not clarify the destructiveHint=true risk or whether saving can overwrite existing data beyond the draft_id duplicate-avoidance note.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the main action and remains dense without obvious waste. A few compressed phrases like 'filing inferred' and `assumed` items could be slightly clearer, but overall it is efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a complex 20-parameter mutation tool with no output schema, the description covers the key operational context: immediate save, defaults, draft handling, read-only blocking, and return fields. The main remaining gap is lack of detail about destructive behavior or when to prefer update_recipe for modifications.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is already 100%, so the baseline is 3. The description adds useful meaning by explaining draft_id behavior and default filling for servings/visibility, plus the notion of `assumed` items, though it does not cover the semantics of most of the 20 parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: saving a recipe to the user's box in one call. It distinguishes supported input paths (chat, pasted, photo/file, import_from_url) and names draft handling, so the agent can differentiate it from siblings like import_from_url or start_recipe_draft.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives clear usage context: use it for recipes written in chat, pasted, from a photo/file, or from import_from_url, and don't ask questions first. It also says to pass draft_id for an open draft and notes read-only account blocking, though it does not explicitly compare against update_recipe for existing recipes.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.