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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, covering the safety profile. The description adds a small amount of behavioral context by indicating output is returned 'line by line' and that one may 'read a passage at a time,' but it does not explain pagination, response shape, or any auth/rate-limit constraints.

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 short, but the second sentence is a poorly structured run-on list that mixes content types and siblings without clearly tying them to this tool. It fails to earn its place by adding confusion rather than useful front-loaded guidance after the title-like opening.

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 one-parameter getter with full schema coverage and comprehensive read-only annotations, the description supplies the bare minimum: it says one reading or plan is returned line by line. However, without an output schema, it should do more to clarify what a reading/plan is and what the return looks like.

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?

The input schema has 100% description coverage and fully documents the single 'id' parameter, including that it can be a reading/plan ID or a plan name like 'japji'. The description adds no further parameter semantics, so the baseline of 3 is appropriate.

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 first sentence is a verbatim restatement of the title and does not add a clear verb or scope beyond the name 'get_reading'. The second sentence lists many content types (daily shabad, plans, search, Ang, shabad lookup, whole books) that mostly belong to sibling tools, making the actual purpose ambiguous rather than sharpening it.

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 explicit when-to-use or when-not-to-use guidance is provided. The description never names alternatives such as get_shabad, get_ang, read_book, or list_readings, so an agent must infer routing from the tool name alone.

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