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

No annotations are supplied, so the description carries the behavioral burden. It discloses the corpus and that the return is verse text, but says nothing about error behavior for out-of-range references, whether translations/versions can be chosen, or any limits. For a low-risk read operation this is adequate but thin.

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?

Two short sentences, no filler, with the core action front-loaded and the auxiliary hint second. Every sentence earns its place.

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 no output schema, the description does state what comes back ('the text of one specific verse'), and the schema fully covers inputs including the language default. It lacks only edge-case behavior (invalid verse, translation choices), a minor gap for a simple lookup tool.

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 includes a full book enum plus language enum, so the schema already documents every parameter. The description adds only the illustrative reference format ('Genesis 1:1') and the pointer to list_books, which is largely redundant with the enum.

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 states a specific verb and resource ('Return the text of one specific verse') plus the corpus scope ('Hebrew Bible / Tanach'), which clearly separates it from a chapter-level fetch. However, it never names or contrasts with the sibling get_chapter, so the verse-vs-chapter distinction is only implicit.

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?

It gives concrete usage context (look up one verse by reference) and routes the agent to a sibling tool, 'Use list_books for valid English book names,' for the prerequisite of resolving book names. It stops short of stating when to prefer this over get_chapter or what to do for invalid references.

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