get_jlpt_progress

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that — not what aggregation is performed, not whether the result is scoped to the authenticated user or a JLPT level, and not how expensive the call is.

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 four-word phrase is front-loaded and free of filler, but it is under-specified rather than concise — it spends its one clause restating the name and conveys no additional information.

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 parameters, no output schema, and only generic annotations, the description is the sole source of meaning about the return value and it supplies none. An agent cannot tell what shape or scope of "progress" comes back, which is the key missing piece for a zero-arg reporting 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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; baseline 4 applies. No parameter-related gap exists.

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?

"Get JLPT progress" restates the tool name with no elaboration on what "progress" means (items learned, SRS retention, level breakdown, accuracy?) or which data source it draws from. Against ~20 sibling get_* tools such as get_srs_overview and get_base_stats, nothing distinguishes this one.

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 guidance at all — no indication of when an agent should call this instead of get_srs_overview, get_base_stats, or get_learning_content. The name implies JLPT-related reporting but leaves the selection decision entirely to inference.

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