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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is covered. The description adds provenance ('Verified against official IRCC sources') and content scope, which is useful, but it does not disclose additional behavioral traits such as whether the facts are cached, how current they are, or any limitations on applicability.

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 a single, well-structured sentence that front-loads the core purpose, then lists concrete topics. The final sentence about IRCC verification adds trustworthiness without padding. No wasted words.

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 read-only, no-parameter tool with an output schema and strong annotations, the description is largely complete: it names the resource, the content areas, and the source. It could be more complete by clarifying how it differs from sibling tools, but that is a minor gap given the low complexity.

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 tool has zero parameters and schema description coverage is 100%, so there is nothing for the description to add about parameter meanings. The baseline of 4 for a no-parameter tool 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 clearly names the resource ('Canadian citizenship test and oath') and enumerates the specific facts covered: format, pass mark, who must take it, scheduling, and ceremony. It is more specific than the title, but it does not explicitly distinguish itself from siblings like get_oath_guide or get_test_day_guide, which could overlap in scope.

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?

The description implies usage: an agent should call this when a user needs key factual information about the citizenship test or oath, such as pass mark or ceremony details. However, it does not explicitly say when not to use it or mention alternatives like get_mock_test for practice or get_oath_guide for detailed ceremony guidance.

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