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

Adds real value beyond the destructiveHint annotation: it specifies what archiving does to data ('remove while retaining ranking history'), discloses idempotency-key and one-time-receipt requirements, and notes eligibility/quota rechecks at apply time. The only gap is not stating explicitly that the ARCHIVED transition is the irreversible/removal path in the caller's own terms.

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?

Front-loaded with the core action and its scope, then constraints, then exclusions. Dense but disciplined; a couple of the negative clauses ('Does not access Amazon Catalog') could be trimmed, but nothing is filler.

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?

With an output schema present, full annotation coverage, and 100% schema coverage, the description supplies everything else an agent needs: confirmation/idempotency preconditions, rejection behavior, eligibility/quota rechecks, and a sandbox simulation path.

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 each parameter already documents its semantics in depth, so the description's mention of the receipt and idempotency key largely restates the schema. Baseline 3 is appropriate; no additional parameter meaning is introduced.

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 (executes a confirmed plan) plus the exact resource (keyword rank tracking status) and the two resulting states (ACTIVE resume, ARCHIVED with history retained). It proactively differentiates from siblings by declaring 'Does not create tracking or change competitor associations', which rules out apply_keyword_rank_tracking_creation and apply_keyword_rank_competitor_replacement.

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?

Clearly gates usage on a confirmed plan, and explicitly excludes other operation groups and creation/competitor operations. It also mentions the Sandbox simulation path for review. It stops short of naming the sibling tools (prepare_*/confirm_workflow_plan) as the explicit alternative workflow, leaving that routing to be inferred.

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