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

Annotations already flag destructiveHint=true and readOnlyHint=false, but the description adds real substance: scope limited to the caller's own facts, unknown ids surfaced in 'skipped', and the full propose→confirm lifecycle including the exact status string and tokens returned. That is materially more than the annotations convey.

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-loaded with purpose and alternative routing, which is the right ordering. There is mild redundancy: 'Destructive — runs only after you confirm via confirm_action' is restated by the following CONFIRMATION sentence, costing a few words without adding 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?

No output schema exists, and the description compensates by naming the returned status, action_id, plan_token, and 'skipped'. For a single-parameter destructive batch tool, nothing an agent needs in order to call it or interpret the response is missing.

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?

With only one parameter and 0% schema description coverage, the description must carry the load, and it does identify the parameter by name ('memory_ids') and explains that ids may be unknown and are reported back in 'skipped'. It stops short of noting the accepted id types or the 1–200 item bounds, which remain discoverable only from 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?

States a specific verb+resource+scope: 'Delete SEVERAL memory facts at once (batch forget) by id.' It explicitly distinguishes itself from the single-item sibling ('use instead of many forget_memory calls'), so an agent can route between the two without opening a schema.

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 explicit routing guidance against the named alternative (forget_memory) and spells out the required workflow: propose, receive confirmation_required with action_id and plan_token, then confirm_action. When-to-use and how-to-complete are both covered.

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