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

The annotations already declare readOnlyHint, idempotentHint, non-destructiveness, and closed-world behavior, so the description’s additional context is valuable but not solely responsible for safety disclosure. It adds that the returned content is instructions to follow with other tools and notes the restriction on team-shared use-only skills. It does not describe error cases or authentication requirements, but the annotation coverage lowers that burden.

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 sentences, front-loaded with the core action and followed by the key caveat. Every sentence earns its place with no repetition or 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?

For a simple one-parameter read-only tool with full schema coverage and annotations covering safety traits, the description is nearly complete. It explains the return intent (instructions to follow) and the main usage restriction, though it could briefly mention whether invalid skill ids or inaccessible skills produce errors.

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 schema has 100% description coverage and the single parameter is already documented as 'The skill id from list_my_skills'. The description adds no syntax, format, or selection detail beyond what the schema provides, so the baseline of 3 is appropriate.

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 states a specific action and resource: get the instructions of one of the user's skills and then follow them with other PopNow tools. It clearly identifies personal/user skills and distinguishes them from team-shared use-only skills, but it does not explicitly differentiate from the sibling tool use_skill.

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 gives a clear workflow: retrieve instructions, then apply them with other PopNow tools. It also includes an explicit exclusion for team-shared use-only skills, which cannot be read here. However, it does not name use_skill or find_skills as alternatives, leaving some sibling selection implicit.

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