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

No annotations are supplied, so the description carries the full behavioral burden. It conveys that the response includes every verse/hadith in the chapter, which usefully signals potentially large payloads, but says nothing about authentication, size limits, pagination, or whether the call is read-only beyond the word "Get".

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?

A single front-loaded sentence with the payload scope stated first, followed by a compact clarifying example. The parenthetical is slightly redundant with the schema's own examples but costs little.

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?

The tool is simple, all three parameters are fully described in the schema, and no output schema exists. Still, the description leaves unaddressed how large the returned chapter can be and whether any truncation or paging occurs, which matters for a whole-chapter fetch.

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%, so the meaning of book, chapter, and locale is already documented in parameters. The description only adds illustrative framing (a surah, a hadith chapter) without new semantics such as accepted chapter ranges or locale fallback behavior; 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?

The description gives a specific verb and resource ("Get full chapter content with all verses/hadiths") and makes the scope distinction — whole chapter rather than a single passage — which implicitly separates it from get-verse and get-part. It stops short of naming a sibling explicitly, so it lands at 4 rather than 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?

There is no explicit when-to-use or when-not-to-use guidance, and no alternatives are named. An agent must infer from "full chapter" that this is the bulk-retrieval option versus get-verse/search-content, which is only weakly implied.

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