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

Annotations already declare destructiveHint=true and readOnlyHint=false, which align with the description. The description adds useful behavioral context about clearing sensitive data and the purpose of deletion, going beyond the bare annotations. It does not contradict the annotations, though it could mention idempotency behavior explicitly.

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 two sentences, front-loaded with the action, followed by use cases. Every word earns its place, with no wasted information or redundancy.

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 the simple single-parameter tool with annotations covering safety (destructive) and idempotency, the description provides sufficient context for correct usage. No output schema exists, so not explaining return values is appropriate.

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 coverage is 100% with the `key` parameter fully described as 'Memory key to delete'. The description merely repeats 'by key' without adding new meaning, so it meets the baseline but doesn't enrich parameter 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?

The description uses a specific verb 'Delete' and resource 'previously stored memory by key', clearly distinguishing it from sibling tools like remember and recall. The action is unambiguous and directly states what the tool does.

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?

The description gives explicit guidance on when to use the tool: 'when context is stale, the task is done, or you want to clear sensitive data'. It also mentions pairing with remember and recall, providing clear situational context.

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