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

Annotations declare destructiveHint=true and readOnlyHint=false, and the description usefully explains why: it 'pays its price if any' and is 'logged to your learning record.' That cost/logging disclosure gives the agent real context beyond the annotation flags, though it omits failure behavior or reversibility.

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?

A single dense sentence with the core return value front-loaded and cost/logging parenthetically attached. No wasted words, though the parentheticals are slightly cluttered.

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 output schema, the description should clarify what 'its content' looks like, and it does not. Combined with the undocumented version parameter and the destructive cost action, the definition is adequate but leaves meaningful gaps for a consuming, credit-spending operation.

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 67% and the description adds nothing about skill_id, version, or api_key. The schema already documents skill_id format ('sk_... or slug') and api_key handling, so the baseline of 3 applies with no compensating detail.

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 verb (use) and resource (skill) and says it returns content, so the operation is discernible. However, it does not distinguish itself from the sibling get_skill, leaving ambiguity about when 'use' retrieves versus merely fetches.

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?

There is no explicit when-to-use guidance, no mention of prerequisites (e.g., needing the skill already unlocked), and no reference to the alternative get_skill or search_skills. Usage must be inferred from the verb alone.

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