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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false. The description redundantly states 'Read-only; no side effects' but adds value by disclosing the return format ('Returns a single Markdown document') and the fallback behavior when the token serves multiple repos. No contradictions.

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?

The description is brief but packed with essential information: purpose, content list, safety, return type, and usage order. It is front-loaded with the core action and structured logically, with zero fluff.

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?

Given the simple parameter set (1 optional param), rich annotations, and no output schema, the description covers everything an agent needs: what it does, when to use it, what it returns, and how to handle the edge case of omitted repository. It is fully complete for its complexity.

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 property description fully explains the repository parameter, including case-insensitivity and the multi-repo fallback. The tool description repeats this information but does not add any new semantics beyond what the schema already provides, so the baseline score of 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?

The description clearly states the tool's purpose: it returns a compact briefing for pre-edit context, listing specific content (index status, commands, tips, etc.). It differentiates from siblings like get_conventions and get_doc_gaps by being a combined briefing, and it explicitly mentions get_doc_impact as a follow-up, showing awareness of sibling tools.

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 explicit usage direction: 'Call this first at the start of a task' and instructs to follow up with get_doc_impact for path-scoped guidance. This provides clear when-to-use and an alternative, exceeding baseline expectations.

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