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

The description adds a concrete behavioral consequence beyond the annotation destructiveHint=true: the page stops appearing in searches and tool consultations. It does not state whether archiving is reversible or whether associated content is removed, but the annotations already establish the destructive and idempotent nature.

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, front-loaded with the action and followed by the relevant consequence. Every word earns its place with no filler or repetition of the schema.

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 single-required-parameter tool with no output schema, the description plus schema gives enough to invoke correctly. A brief note on reversibility or confirmation would make it fully complete, but annotations already signal that this is a destructive 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%, and the page_id parameter is already documented with its bp_... format. The description adds no parameter-specific meaning, so it rests on the schema, which is the baseline expectation.

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 ('Archive') with a clear resource ('a brain page') and states the operational consequence: it will no longer appear in searches or tool consultations. This clearly distinguishes the tool from siblings like brain_update or brain_query.

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 described effect implies this tool is for removing a brain page from active use, but there is no explicit 'use this when...' guidance and no mention of alternatives or when not to use it. The context is understandable but left to inference.

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