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

Annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the safety profile is covered. The description adds genuine value beyond them by disclosing reversibility ('The writer can undo it') and reinforcing that only a single rule is affected, which is not stated in the structured fields.

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?

Three short sentences, front-loaded with the action and trigger, followed by the id source and the reversibility note. Every sentence adds information and none 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?

An output schema exists, so return values need no explanation, and annotations carry the safety profile; the description supplies trigger, id provenance and reversibility. Minor gap: it says nothing about what the writer sees if the ruleId is unknown or already removed, though the idempotent annotation partly covers that.

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, and the description only echoes the sourcing of ruleId ('from get_voice_profile'). That is mild reinforcement rather than new meaning, so the baseline 3 for high-coverage schemas applies.

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 precise verb ('remove') and resource ('one rule from the writer's voice profile') with an explicit scope of a single rule, which cleanly separates it from update_voice_rule (editing), add_voice_material (adding) and undo_voice_change (reverting). An agent can pick it out of the dense sibling list without opening a 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?

Gives a clear trigger condition ('when the writer asks you to drop it') and names the prerequisite tool that supplies the id ('Use the rule id from get_voice_profile'). It does not spell out when to prefer update_voice_rule (edit instead of delete) or undo_voice_change (revert instead of remove), so the exclusion side is inferred.

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