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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds useful behavior: the valid file set, section-only retrieval, and that outline=true lists headings. It does not mention error behavior for invalid files or headings, so it remains adequate rather than rich.

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 purpose is front-loaded in the first sentence, followed by the necessary file enumeration and section/outline behavior. The file list is dense but earns its place because the schema does not enumerate values. Minor restructuring could improve scanability.

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 read-only documentation reader with no output schema, the description covers the key inputs and the outline mode. Annotations already handle the safety profile. It leaves the exact return shape for section reads implicit, but otherwise gives enough to call the tool correctly.

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 0%, so the description must carry parameter meaning, and it does: it enumerates valid file values, gives heading examples for section, and explains outline=true. It still omits details such as whether outline defaults to false or how heading matching works, which keeps it from a 5.

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 uses a specific verb and resource: read a method file or one section of it. It enumerates the available method files, making the scope concrete. It does not explicitly distinguish itself from guidance-oriented siblings like get_recipe or start_design, so it stops short of a 5.

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 how to request a section or an outline, but it does not say when to use this tool instead of alternatives such as browse_library or get_recipe. There is no when-not guidance, so the agent must infer the selection criteria.

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