evaluate_daily_answerDeterministically check a JSON answer for today's challenge without copying its challenge ID. The answer is not stored or executed.
| Name | Required | Description | Default |
|---|---|---|---|
| answer | Yes |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses that the answer is not stored or executed and that the check is deterministic—important safety and side-effect guarantees. However, it does not describe the return value or result format, which is a notable gap given there is no output schema.
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?
Two sentences, both front-loaded with the core purpose and key behavioral guarantee. No wasted words; every phrase adds value. The structure is efficient and easy to scan.
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?
The tool is simple (one param, no output schema), but the description omits any indication of what the check returns (e.g., boolean, score, error) and does not specify the answer object's expected format. While the sibling tools provide some context, an agent calling this tool would still be uncertain about the result and input requirements. It is adequate but not complete.
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 coverage is 0% and the description only mentions 'JSON answer' without elaborating on the structure or required fields of the 'answer' object. Since the schema only specifies type object, the description adds minimal value beyond that. Given the low coverage, the description was expected to compensate but fails to provide any structural guidance.
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 (check) and resource (JSON answer for today's challenge) with a distinguishing qualifier (without copying its challenge ID). It clearly differentiates from sibling tools like evaluate_answer and evaluate_answers, which presumably require a challenge ID, making the purpose unambiguous.
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?
Implies usage: use when you have an answer for today's challenge and want to check it without needing the challenge ID. The phrase 'without copying its challenge ID' hints at when to choose this over the other evaluate tools, but it doesn't explicitly state when not to use it or name alternatives. This is clear context but lacks explicit exclusion conditions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Most tools target distinct resources (daily challenge, recent challenges, hints, lessons, solutions), but evaluate_answer/evaluate_answers are near-redundant and get_challenge_lesson/get_challenge_solution both return canonical answers, creating real selection ambiguity.
The set consistently uses snake_case verb_noun names with get_* and evaluate_* prefixes. Minor inconsistencies include singular/plural evaluate_answer/evaluate_answers and the word order in evaluate_daily_answer vs get_daily_challenge.
Eight tools is a reasonable size for a challenge-based gym, but the three evaluator tools could be consolidated into one parameterized evaluator, so not every tool fully earns its place.
The surface covers challenge retrieval, evaluation, hints, lessons, and post-close solutions, but lacks a direct get_challenge_by_id or a general list endpoint beyond recent/daily, leaving some lookups indirect.