create_snapshot

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

Annotations already disclose that this is a non-read-only, non-idempotent, non-destructive, open-world operation. The description adds the HTTP endpoint, which is useful context, but does not explain snapshot creation side effects, permissions, or response behavior beyond what annotations and schema provide.

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 short and front-loads the core action and endpoint. The second sentence largely repeats the first and lists attributes already covered by the schema, so not every sentence adds new value.

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?

The schema and annotations are rich enough to support invocation, but the description is minimal for a mutation tool with no output schema. It does not clarify return behavior or any operational constraints around creating a snapshot.

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 100%, so the nested body, name, description, instanceId, and trace header are already well documented. The description only repeats that name and description attributes are used, adding no format or constraint details beyond the schema.

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: create a new instance snapshot. It also includes the POST endpoint, making the operation clear. However, it does not explicitly differentiate this tool from adjacent snapshot/image tools such as rollback_snapshot or create_custom_image.

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 explains what the tool does but gives no guidance on when to use it versus alternatives like rollback_snapshot, update_snapshot, or create_custom_image. There are also no stated prerequisites or exclusions.

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