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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false and openWorldHint=false, so the safety profile is covered structurally. The description adds genuine context beyond that — the install joins a device's playlist and inherit_oauth carries the author's OAuth connection — but omits permission requirements, reversibility, and duplicate-install behavior.

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 lead sentence is front-loaded and the bullet efficiently maps parameters to their roles. There is minor redundancy in restating 'Install a recipe' inside the bullet and echoing the title, but nothing bloated.

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 non-idempotent write tool with no output schema and nested parameters, the description covers the operation and its parameters adequately. It leaves open the re-install/duplicate outcome implied by idempotentHint=false and says nothing about required scopes or what the response contains.

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?

The top-level schema documents only 'action' and a generic 'params' object, so the description meaningfully supplements it by naming and explaining the nested fields: id (path), device_id (the device whose playlist the install joins), and inherit_oauth (carries the author's OAuth connection for oauth_choice recipes). That is real semantic value above the 100% top-level coverage baseline.

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 names a specific verb and resource ('Install a recipe another user published onto a device') and scopes it to the installRecipe operation, which an agent can distinguish from the sibling AccountRecipesReadTool. It stops short of explicitly naming siblings or stating what makes this different from other write tools in the Account*WriteTool family.

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?

The phrase 'another user published' implicitly constrains usage to recipes you do not own, and the device_id description implies the install targets a device playlist. However, there is no explicit when-to-use vs alternative guidance, no prerequisites, and no mention of what happens if the recipe is already installed.

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