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

No annotations are supplied, so the description carries the burden. 'Returns' implies a safe read, but it says nothing about behavior for invalid dates or unsupported language codes, whether a quote always exists for arbitrary dates, or any rate/availability constraints. Adequate but incomplete for a zero-annotation tool.

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 sentences, zero waste, front-loaded with the primary behavior before the optional parameters. Every clause adds information an agent needs.

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 two-optional-parameter read tool with no output schema, the description covers purpose, defaults, and the returned fields (topic, author, translated line). Complete enough to invoke correctly; only edge-case behavior for bad inputs is unstated.

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 coverage is 100%, with format and the full language list already documented in the schema. The description reinforces the YYYY-MM-DD format and clarifies that language produces a 'translated line', but adds no semantics beyond the structured fields, so the baseline of 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 uses a specific verb and resource ('Returns the Stoic quote') and names exactly what comes back ('with its topic and author'), plus its default scope (today). An agent knows precisely what this tool produces without opening the schema.

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 clear in-tool usage guidance (defaults to today; pass a date for another day; pass language for a translation), but it never distinguishes this from siblings like stoic_principle or daily_reflection, so an agent has no explicit routing rule between them.

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