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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false. The description adds real value on top: the two-step draft/confirm workflow and the fact that only the single most recent assistant-made change is targeted. It does not describe what happens if there is no change to undo, which is a minor omission.

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 no waste. The core action and its scope are front-loaded, and the workflow note follows. Every clause earns its place.

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 one-optional-param mutation tool with no output schema and full annotation coverage, the description supplies the essential workflow and scope. It could be stronger by noting the outcome when no prior change exists, but nothing needed to invoke it correctly 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?

Schema coverage is 100% and the single parameter already has a detailed description, so baseline is 3. The description's 'Two-step: draft, then confirm' reinforces the confirm flag's role in the workflow, adding light context beyond the schema.

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 (Reverse) and resource (the most recent change you made through Claude), then enumerates the exact change types covered (claim, new lead, status change, logged call, trial conversion). An agent can tell precisely what this does without opening the 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?

Clearly states the scope of applicability — it only reverses the most recent change made through this assistant, which prevents misuse for arbitrary/older changes. No alternatives exist among siblings, so no differentiation is needed; the only gap is the absence of explicit 'when not to use' guidance.

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