iaas_create_machine_snapshot

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

Annotations already declare this is a non-read-only, non-idempotent POST, so the description does not need to restate that. It adds no context on whether the operation is asynchronous/long-running, what happens to the machine, or how repeated calls behave — nothing beyond the raw route already in the title.

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 second sentence is a garbled near-duplicate ("Second day create snapshot operation for machine") that wastes space, and the trailing route line duplicates the annotation title. Only the first clause carries information.

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?

This is a mutating tool with a nested request body and no output schema; the agent still lacks knowledge of whether a task/request-tracker is returned, whether the snapshot is async, or what snapshotMemory defaults to. For a mutation with this schema complexity, the description is under-specified.

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 baseline is 3. The description adds no meaning about the body fields, notably snapshotMemory, which is the one parameter whose effect (capturing running-VM memory) an agent would want explained.

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?

Names a specific verb and resource ("Create snapshot operation for machine") and states the HTTP route, so the agent can tell it creates a machine snapshot. It does not distinguish itself from siblings like iaas_create_block_device_snapshot, iaas_revert_machine_snapshot, or iaas_delete_machine_snapshot.

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?

No statement of when to use this versus revert/delete/get snapshot tools, and no prerequisites such as machine power state or required permissions. The only additional line, "Second day create snapshot operation for machine," provides no actionable guidance.

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