Updating the report subscription.

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

Annotations already mark destructiveHint=true, so description adds little. It notes 'Perm: view_reports' but omits critical behavioral traits like dry_run preview mode or confirm requirement, which are only in schema.

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?

Extremely concise but with redundancy ('Updating the report subscription. Updates the report subscription.'). Front-loads verb but wastes first sentence. Could be tighter.

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?

Despite nested schema and output schema, description ignores key behaviors (dry_run, confirm, idempotency, output). For a destructive update with safety mechanisms, much more context is needed.

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 covers 100% of parameters with descriptions, so baseline is 3. Description adds no parameter-specific meaning beyond schema, failing to enhance understanding.

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?

Description specifies verb 'updating' and resource 'report subscription', clearly identifying the action. However, it lacks specifics on what aspects can be updated (e.g., schedule, recipients), making it somewhat vague despite being clear.

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 on when to use this tool versus alternatives like create or delete subscription. Does not mention prerequisites or conditions, leaving the agent without decision support.

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