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

Annotations already declare destructiveHint=true and idempotentHint=true, so the description's real contribution is explaining that pausing leaves open copies running and that resuming only captures future openings — genuinely useful operational nuance about the blast radius of a 'destructive' update. It still doesn't cover permissions or error behavior, keeping it below a 5.

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?

The lead sentence front-loads the three verbs and the follow-up sentences explain the pause/resume semantics; however, the pause explanation is nearly verbatim from the is_active schema description, so some wording does not earn its place twice.

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 mutation tool with no output schema, the description gives enough behavioral context to call it correctly — what each field does and what pausing/resuming actually affects. A note on required copier_id errors or the return value would make it fully complete.

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 67%; copier_id and is_active are documented in the schema, but 'name' has no description. The description compensates by framing 'name' as a rename action and mapping is_active to pause/resume, adding meaning beyond the raw field types, though it repeats much of the is_active schema text rather than extending 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?

The description names three specific operations (rename, pause, resume) on a single, clearly identified resource (copier), so an agent can distinguish it from create_copier, delete_copier, and update_follower 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?

It implies when each operation applies by tying verbs to fields (rename vs pause/resume), but it never states when to choose update_copier over siblings like update_follower or delete_copier, nor any exclusions or prerequisites.

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