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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description earns partial credit for disclosing the response contents, but adds no error behavior, auth requirements, or note about how phase ids relate to get_skill_phase.

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 tight sentence with no filler, front-loaded on the verb and resource. It is efficient, though the trailing field list reads as raw schema echo rather than prioritized information.

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?

No output schema exists, so the description carries the return-value burden and does so by enumerating the fields returned. For a one-parameter, read-only getter with full annotation coverage, that is nearly sufficient; only failure modes and the phase-id linkage are left implicit.

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% and the single 'name' parameter is fully documented in-schema with a slug pattern and example. The description adds nothing beyond that, so the baseline 3 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 specific verb+resource ('Return a skill') and enumerates the returned payload (description, frameworks, tags, context, ordered phase ids), which signals it is the single-skill detail fetch rather than a list. It never names list_skills or get_skill_phase, so it stops short of full sibling differentiation.

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?

Usage is only implied: the mention of 'ordered phase ids' hints at the get_skill → get_skill_phase workflow, and the name-based lookup implies you already know the slug. There is no explicit when-to-use, no pointer to list_skills for discovery, and no statement of what happens for an unknown name.

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