vpc_create_ssh_key

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

No annotations are provided, so the description must fully convey behavioral traits. It states 'Upload' which implies creation, but does not disclose whether the operation is idempotent, what happens on duplicate names, or any authentication requirements. This lack of detail leaves significant gaps for agent decision-making.

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 a single short sentence, which is concise but potentially overly terse. It lacks structure and does not front-load critical information. While brevity is valued, here it sacrifices clarity on parameters and behavior.

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 straightforward upload tool with no output schema, the description is minimally adequate. However, it could be improved by noting expected response (e.g., key ID returned) or any constraints on public key format. Given the simplicity, a score of 3 is appropriate.

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?

Only one of three parameters (public_key) has a schema description. The tool description adds no additional meaning to name or region beyond what is in the schema. With 33% schema coverage and no parametric details in the description, the agent has insufficient information to correctly populate all 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 'Upload an SSH public key' clearly indicates the action (upload) and the resource (SSH public key). It effectively distinguishes from sibling tools like vpc_list_ssh_keys and vpc_delete_ssh_key, which are list and delete operations respectively.

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 explicit guidance on when to use this tool versus alternatives. While the purpose is clear, there is no mention of prerequisites or context (e.g., whether the key needs to be associated with a VPC). Usage is implied but not detailed.

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