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

The annotations contain only a title, so the description must carry the behavioral burden. 'Read' reasonably signals a non-destructive lookup, and 'preserving its reference and translation' hints at what the response contains, but there is no statement about error handling for out-of-range chapters, whether content is cached or fetched live, or any rate/authorization 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?

A single front-loaded sentence with the verb, resource, source, and output expectation, with no filler. Every clause contributes something.

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 two-parameter read tool with fully documented schema and no output schema, the description covers what is retrieved and hints at the return shape. It stops short of explaining what 'Reminder' refers to or how chapter-only versus verse requests differ in output, but nothing essential is missing.

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 both parameters are documented, including the 1-114 range and the 'omit for the whole chapter' behavior. The description adds only a restatement of 'chapter or verse', 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 description gives a specific verb and resource: 'Read a Quran chapter or verse from Reminder', and adds that the reference and translation are preserved. That is clear enough to act on, but it does not differentiate itself from overlapping siblings such as islam_read, islam_references, or prayer_verse, so an agent cannot tell from this text alone which one to pick.

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 when-to-use or when-not-to-use guidance and no mention of the alternative tools in the islam_* family. The only implicit signal is the schema note that omitting 'verse' returns a whole chapter, which is parameter behavior rather than tool-selection guidance.

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