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

Annotations already cover the safety profile (readOnlyHint=false, destructiveHint=false, openWorldHint=false), and the description adds two things beyond them: that archiving is reversible via archived:false, and that the operation is 'Free' (a cost signal not encoded anywhere in the structured fields). It does not say what happens if both name and archived are omitted, which is the remaining behavioral gap.

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?

A single sentence with the primary action front-loaded, the archive side effect second, and the undo path in parentheses. Every clause carries information; nothing is redundant padding.

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 three-parameter, non-destructive mutation with full schema coverage and no output schema, the description covers both modes, the side effect on list_searches, the reversal path, and cost. Only the no-op case (neither name nor archived supplied) and the refresh-after-update expectation are left unstated.

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%, so all three parameters are already documented, including the archived reversal semantics that the parenthetical restates. The description adds no syntax, length, or conflict guidance (e.g., whether name and archived can be combined in one call), so it sits at the baseline rather than above it.

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 set (rename / archive) against a specific resource (a past search), and ties the archive behavior to the sibling that exhibits it (list_searches). An agent can distinguish this from get_search or list_searches without opening any 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?

Usage is implied rather than stated: the parenthetical '(archived: false brings it back)' tells the agent how to undo an archive, which is a genuine when-to-use hint. But there is no explicit guidance on when to call this versus get_search, list_searches, or other update_* tools, and no prerequisites (e.g., ownership) are mentioned.

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