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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is carried by structured data. The description's only added behavioral signal is 'for good,' which reinforces irreversibility. It says nothing about what happens if the key does not exist, whether deletion requires confirmation, or whether it is scoped per user/workspace.

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 sentences with zero filler. The destructive action is stated first and the usage condition follows, so the reader gets the essential fact immediately.

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?

An output schema exists and both parameters are fully documented, so the description need not explain return values or argument formats. What remains thin is behavioral detail on failure modes and confirmation, but for a simple two-parameter delete the definition is close to complete.

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%: key is documented as coming from get_context and kind is documented with its six allowed values. The description adds no meaning beyond that, which is acceptable given the schema does the work, but it earns only the baseline.

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 and resource ('Remove a context document') plus a permanence qualifier ('for good'), which cleanly separates it from delete_post, cancel_post, and the read/write context siblings. It stops short of naming get_context or set_context as the contrasting operations, so sibling differentiation is implied rather than explicit.

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 a concrete triggering condition: 'when the user asks to forget something saved about how they write.' That is a usable routing rule. It offers no explicit when-not guidance (e.g., to overwrite a value rather than erase it, use set_context) and names no alternative tool.

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