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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is partly covered. The description does add real value beyond that with "soft-delete" (recoverable removal) and "proposes only" (staged, not immediate), but it leaves the propose-then-confirm mechanics unstated, which is the crucial behavioral detail for an agent deciding what happens next.

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?

Two short, front-loaded sentences with no filler; the action and its soft-delete nature come first. The final phrase "Proposes only" is terse to the point of being cryptic, costing a little clarity.

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?

For a destructive-flagged mutation tool with no output schema, the description omits what a successful "proposal" returns, whether the memory is restorable, and what follow-up is needed. Combined with the undocumented reason parameter, an agent cannot fully anticipate the call's effect.

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 50% schema coverage, the description must compensate, but it only restates the memory_id concept ("by id") which the schema already documents. The optional "reason" parameter is never mentioned in either the description or the schema, leaving its purpose entirely unexplained.

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?

"Forget (soft-delete) a saved memory by id" gives a specific verb, resource, and lookup key, and the parenthetical distinguishes it from a hard delete. It is reasonably separable from siblings like recall_memory and update_memory without opening a schema, though it does not name them explicitly.

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?

There is no explicit statement of when to call this versus update_memory or recall_memory, nor any precondition for invoking it. "Proposes only" implies a staged workflow but never says whether/when a follow-up confirmation (e.g. confirm_change) is required.

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