create_backup

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

Annotations are absent, so the description must disclose behavioral traits. It only states that it creates a backup and returns a result, without mentioning mutating implications, potential long-running behavior, IAM requirements, or effects on existing backups. This leaves the agent without a clear understanding of side effects.

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 concise and well-structured, opening with a clear action statement, followed by a parameter list and return value. It contains no irrelevant information and is easy to scan.

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?

Given no annotations and no output schema, the description is too sparse. It leaves out critical context such as prerequisites (e.g., the instance must exist), asynchronous behavior, what the returned result contains, and potential permissions. The vague 'Result of the backup operation' does not adequately prepare an agent for the tool's usage.

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 schema has no parameter descriptions (0% coverage), so the description compensates by listing all three parameters with brief explanations. It clarifies that 'description' is optional, which adds context, but the explanations are largely restatements of the parameter names and lack detailed constraints or formatting.

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 the action 'Create a backup' and the specific resource 'Cloud SQL instance', which is sufficiently precise. It does not explicitly compare with sibling tools, but the resource type differentiates it from other backup/snapshot tools.

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 guidance is provided on when to use this tool, prerequisites, or alternatives. The usage is only implied by the tool's name and description, with no explicit context such as 'use when you need to back up a Cloud SQL instance' or required permissions.

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