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

Annotations already cover the safety profile (readOnlyHint=true, openWorldHint=false), and the description productively adds return-shape and domain semantics: fields per check, how scored checks differ (part/tier/weight), and that unscored checks are worth 0 points. It doesn't say whether the list is static for rubric v0.9 or whether a different rubric version could appear, which keeps it from a 5.

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?

Three short sentences, front-loaded with the scope (60 checks, 5 dimensions) followed by the per-item shape and the scored/unscored scoring rule. No filler, no restatement of the title.

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 output schema, the description correctly takes on the burden of describing what each returned check contains, plus the 0-point rule for unscored checks. It is nearly complete; only rubric versioning/stability of the list is unaddressed.

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 are no parameter semantics to explain and the baseline of 4 applies. The description doesn't waste space on non-existent inputs.

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?

States a specific verb+resource ("List the 60 checks of rubric v0.9") and quantifies scope across 5 dimensions, so the agent knows exactly what it gets back. It does not differentiate itself from siblings like get_score or get_report, so it falls short of a 5.

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?

Usage is only implied: this is the enumeration step you'd call before scoring or reporting, and the note that unscored checks earn 0 points hints at the scoring relationship. No explicit when-to-use, when-not-to-use, or named alternative (e.g., 'use get_score to evaluate a single check') is given.

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