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

Annotations cover only the safety profile (not read-only, not destructive, idempotent); the description goes well beyond by disclosing what is destroyed (Staging pages no Panel came from), that changes become a single undoable step, that the user is notified, and that no Fit report follows. It also describes the return payload.

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 trigger and effects, and every sentence carries content — effects, return shape, then instructions. Some clauses are dense and multi-part ('its name, its link, and what it holds'), but nothing is redundant.

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 no parameters and no output schema, the description must carry both the effects and the return contract; it does both, naming the fields returned per Workspace and how to relay them to the user. Nothing an agent needs is missing.

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?

The tool takes zero parameters, so the baseline of 4 applies; there is nothing for the description to disambiguate. The schema is empty and fully consistent with the description's no-argument framing.

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 act (signalling completion of work) and enumerates its concrete effects: clearing the working mark, discarding orphan Staging pages, collapsing changes into one undo step, notifying the user. No sibling tool does anything similar, so an agent can distinguish it immediately.

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 opening clause 'Signal that you've finished working' makes the triggering condition explicit, and the closing lines prescribe what to do with the result (tell the user what you built, include the link, never quote values). There is no explicit when-not guidance or named alternative, which is the only gap.

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