get_chapter

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

With no annotations, the description must fully disclose behavioral traits, but it only adds the max_chars limiting behavior. It does not state whether the operation is read-only, how errors are handled, or any other constraints, leaving the agent with limited understanding.

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 a single, concise sentence that directly states the primary action. There is no redundancy or wasted words, making it easy to parse quickly.

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 simple retrieval tool with an output schema, the description is functional but sparse. It covers the core operation (getting a chapter) and the optional param, but lacks comparison to sibling tools or edge-case context, making it adequate but not comprehensive.

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 compensate. It clarifies max_chars as a limiter on returned body characters, but leaves chapter_id undefined and the term 'body' ambiguous, providing minimal added value over the raw schema.

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 opens with a specific verb 'Get' and a clear resource 'chapter', making the tool's purpose immediately obvious. It distinguishes from sibling tools like list_chapters and search_chapters, which focus on enumeration or querying.

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?

No guidance is provided on when to use this tool versus alternatives such as list_chapters or search_chapters. The mention of 'optionally limiting returned body characters' is a parameter feature, not a usage guideline, leaving the agent without any contextual direction.

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