get_non_completed_badge_challenges

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

Beyond the readOnlyHint/openWorldHint annotations, the description discloses real behavioral traits: the response comes back as an array (not a dict) requiring correction, and there is a live failure mode where `start=0` returns a 400. That is genuine context annotations do not carry. It loses a point only because these traits are conveyed by reference ('same ... as getBadgeChallenges') rather than stated outright.

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?

It is a single dense sentence with the endpoint front-loaded, so it is compact. However, it is a run-on semicolon chain crammed with internal jargon ('array-not-dict correction', 'live start=0 -> 400 discovery') that reads more like a developer note than an agent-facing spec.

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 two-required-parameter read tool whose annotations already cover safety, the description supplies the response-shape and error-mode quirks. But with no output schema and 0% parameter coverage, the meaning of start/limit and the exact return contents remain unstated, leaving gaps an agent must fill by opening the sibling 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?

Schema description coverage is 0% and both `start` and `limit` are required, so the description carries the burden. It only says the validation is 'the same' as another tool and never explains that these are pagination offset/count parameters, nor their ranges or defaults. It does not compensate for the coverage gap.

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 gives the literal endpoint path (`/badgeChallenge/non-completed`) and the verb 'GETs', so a careful reader can infer the resource is non-completed badge challenges. But it never states the purpose in plain language, relying on the reader to parse a URL path, and it does not explicitly contrast itself with siblings like get_badge_challenges or get_available_badge_challenges.

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?

It cross-references `getBadgeChallenges` for shared validation behavior but never says when this tool should be chosen over that sibling or over get_in_progress_badges / get_available_badge_challenges. There is no when-to-use or when-not-to-use guidance.

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