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

Annotations already declare readOnlyHint, destructiveHint=false and openWorldHint, so safety is covered. The description adds a genuinely non-obvious behavioral trait — 'Free' (no billing/credit impact) — plus the scope of what is returned (the document in full).

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 core action, then the parameter behavior, then the cost note. No filler; the terse 'Free.' earns its place.

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 two-parameter read tool with no output schema and annotations covering safety, this is nearly complete: it covers the action, parameter interaction, path format, and cost. Missing only the valid value domain for `skill` and whether `path` is relative to the skill root.

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 0%, so the description must carry the load, and it does: it explains that `skill` alone resolves to that skill's SKILL.md while `path` selects a specific document, with a concrete format example ('provider-playbooks/apollo.md'). It stops short of saying what valid `skill` values look like (id, slug, name).

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 and resource: 'Return one skill document in full,' with the word 'one' implicitly scoping it against the sibling list/search tools. It does not name hyreflow_skill_search or hyreflow_skills_list explicitly, so the differentiation is inferable rather than stated.

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?

The description explains the parameter combination (`skill` alone vs `skill` + `path`), which is useful operational guidance, but gives no explicit when-to-use-this-vs-siblings statement (e.g. read one known document vs search for one).

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