progress

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

With no annotations, the description must carry the behavioral burden. It discloses that the result is scoped to the authenticated user and lists the returned fields, implicitly signalling an auth requirement, but says nothing about caching/freshness, rate limits, or what happens if unauthenticated, leaving real gaps for a read tool with zero annotation coverage.

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 tight sentence with no filler; the scoping and returned fields are front-loaded. Every word earns its place.

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 zero-parameter read tool with an output schema that already documents the return shape, the description covers what is needed to call it correctly. The only shortfall is the absence of any sibling disambiguation from 'scoreboard' and the lack of behavioral notes that, with no annotations, would have added value.

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, which is the baseline-4 case per the rubric. There is nothing for the description to clarify beyond the implicit scoping to the authenticated user.

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 ('Return') and resource ('authenticated user's progress') and even names the payload ('score and solved challenges'), so the agent knows exactly what it gets. It does not, however, differentiate itself from the sibling 'scoreboard', which an agent could easily confuse with this per-user progress view.

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 phrase 'authenticated user's progress' implies the usage context (fetching the calling user's own stats rather than a global ranking), which is enough to infer when to reach for it over 'scoreboard'. But no explicit when-to-use or when-not-to-use guidance, prerequisites, or alternative routing is given.

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