ensure_ssh_key

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

With no annotations provided, the description carries full burden for behavioral disclosure. It fails to mention side effects (e.g., overwriting existing keys), idempotency, or required permissions. The tool's behavior under different conditions (e.g., key already exists) is not detailed.

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 extremely concise with a single sentence that is front-loaded and contains no filler. Every word is essential.

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?

While the tool has no parameters and low complexity, the description lacks context such as where the SSH key is stored, whether it is used for authentication to the devkit, or if it is a prerequisite for other tools. The presence of an output schema partially compensates, but more context would improve clarity.

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 input schema has zero parameters, so the description does not need to elaborate on parameter semantics. The schema coverage is 100% by default, placing the baseline at 4.

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 clearly states that the tool creates or repairs a local SteamOS Devkit SSH key, using a specific verb and resource. It is distinct from sibling tools, but the dual action 'create or repair' is slightly ambiguous regarding when each applies.

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 description provides no guidance on when to use this tool versus alternatives, such as other devkit tools like sync_devkit_utils or register_device. It does not mention prerequisites, typical use cases, or situations where this tool is not appropriate.

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