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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description's added value is the enumeration of returned content, which is mild but real; it says nothing about ordering, caching, or error behavior for an out-of-range step.

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?

One sentence, front-loaded with the verb and resource, with the return contents in a parenthetical. Zero 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?

With only one bounded parameter and no output schema, the description usefully enumerates the return fields (summary, explanation, checklist, related tools), compensating for the missing output schema. What is absent is any framing of what the playbook is for or how steps relate, which limits usefulness for a first-time caller.

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 100% and the single 'step' parameter already documents 'Step number 1 to 13' with min/max bounds. The description's '13 playbook steps' restates the schema bound rather than adding format or meaning beyond it, so 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 (Get) and resource (playbook step), bounds the scope to 'one of the 13', and enumerates what the step contains. No sibling tool overlaps this resource, so no differentiation statement is needed, but it also never says what a 'playbook' is.

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 gives no when-to-use context: it doesn't say when an agent should fetch a playbook step, whether steps must be read in order, or whether this is a prerequisite for other tools. The only guidance is implicit in the enumerated fields.

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