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

Annotations already declare idempotentHint=true and destructiveHint=false, but the description adds real value beyond them: clearing cancels a pending change rather than rolling back state, and it names the FLAG_NOT_FOUND failure mode. That error contract is the kind of behavioral detail annotations cannot express.

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?

Front-loads the core action, then semantics, error behavior, and the integration-guide pointer. Every sentence carries weight, though the closing integration-guide instruction is slightly tangential to the call itself.

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?

With no output schema, the description covers the essential behaviors an agent needs: idempotency, no-rollback semantics, and the failure case. Little is missing for a simple removal operation.

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 both the app and key parameters are already documented in the schema. The description only echoes 'by KEY' and adds no format or edge-case detail beyond it, making the baseline 3 appropriate.

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?

States a specific verb (Remove/Clear) on a specific resource (scheduled state transition on a feature flag) scoped by KEY. It is cleanly distinguishable from set_flag_schedule, its natural opposite, and from toggle/delete siblings.

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?

Gives clear context: it is safe to call when no schedule exists, and it points to get_integration_guide before writing consuming app code. It does not explicitly name set_flag_schedule as the alternative for creating a schedule, so it stops short of full when/when-not routing.

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