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

With no annotations, the description carries the full disclosure burden, and it delivers almost none: 'Read' implies a safe read and 'public' implies no auth, but there is no mention of return shape, pagination, rate limits, or what a 'graded record' contains. Those inferences are left entirely to the agent.

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 eleven-word sentence, front-loaded with the verb, with no filler or redundancy. Brevity is not the problem here; substance is.

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 tool with no parameters, no annotations, and no output schema, the description is the only source of information about behavior and return values, and it supplies neither. An agent cannot tell what it will receive or when the call is appropriate.

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 schema declares zero properties with additionalProperties: false, yet the description says the read happens 'by tier and recorded units' — implying filter inputs the caller cannot actually supply. That mismatch is actively misleading rather than merely sparse, so the usual zero-parameter baseline of 4 does not apply.

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?

It states a verb+resource ('Read ... record') but the resource is defined only by undefined jargon: 'public graded record', 'tier', and 'recorded units' convey nothing an agent can map to a domain object. Against siblings like get_elo_rankings and get_week_shortlist, which telegraph their content, this one is nearly indistinguishable from the bare name.

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 statement of when to call this versus the six sibling get_* tools, and no prerequisites or exclusions. The only usable hint is the word 'public', which faintly implies no authentication is needed.

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