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devRonPark

Harutalk Japanese Coach MCP

by devRonPark

Server Quality Checklist

58%
Profile completionA complete profile improves this server's visibility in search results.
  • Latest release: v0.1.0

  • Disambiguation4/5

    Tools have mostly distinct purposes: correcting sentences, saving cards, explaining expressions, generating quizzes, and translating from Korean. Minor potential overlap between 'correct_japanese_sentence' and 'explain_expression' as both involve explanations, but one is for user-written sentences and the other for given expressions.

    Naming Consistency5/5

    All tool names follow a consistent verb_noun pattern with underscore_case: correct_japanese_sentence, create_review_card, explain_expression, generate_daily_quiz, translate_kakao_message.

    Tool Count5/5

    With 5 tools, the server is well-scoped for a language coach. The count is neither too few to be useful nor too many to be overwhelming.

    Completeness4/5

    The tool set covers core learning activities: correction, review storage, explanation, quiz generation, and translation. Missing features like vocabulary lists or pronunciation, but the domain is adequately covered for a beginner-focused coach with Korean translation.

  • Average 3/5 across 5 of 5 tools scored. Lowest: 2.4/5.

    See the Tool Scores section below for per-tool breakdowns.

    • No community issues in the last 6 months
    • 20 commits in the last 12 weeks
    • No stable releases found
    • No critical vulnerability alerts
    • No high-severity vulnerability alerts
    • No code scanning findings
    • CI is failing
  • This repository is licensed under MIT License.

  • This repository includes a README.md file.

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How is the quality score calculated?

The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).

Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.

Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).

Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.

Tool Scores

  • Behavior2/5

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

    No annotations are provided, so the description must carry the burden. It mentions the source (review cards) and time limit, but does not disclose how cards are selected, what happens if no cards exist, or how parameters affect behavior. Significant gaps remain.

    Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

    Conciseness4/5

    Is the description appropriately sized, front-loaded, and free of redundancy?

    The description is a single concise sentence with no wasted words. It is front-loaded and efficient, though slightly too brief given the tool's complexity.

    Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

    Completeness1/5

    Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

    Given 4 parameters, no output schema, and no annotations, the description is incomplete. It does not explain quiz format, parameter effects, or expected output, making it insufficient for reliable agent use.

    Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

    Parameters1/5

    Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

    Schema description coverage is 0%; the description adds no meaning to any of the 4 parameters (focus, level, quiz_count, reveal_answers). It fails to explain their purpose, defaults, or options, leaving the agent without guidance.

    Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

    Purpose4/5

    Does the description clearly state what the tool does and how it differs from similar tools?

    The description clearly identifies the verb '생성합니다' (generates) and resource '퀴즈' (quiz) based on saved review cards. It distinguishes from siblings by specifying the quiz generation focus and time constraint (1 minute), though it could be more explicit about quiz format.

    Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

    Usage Guidelines2/5

    Does the description explain when to use this tool, when not to, or what alternatives exist?

    The description provides context (based on review cards, within 1 minute) but gives no explicit guidance on when to use this tool versus alternatives. It does not mention when not to use it or compare with sibling tools.

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

  • Behavior2/5

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

    With no annotations provided, the description must convey behavioral traits. It only states 'saves' without any details on side effects, authentication needs, or data persistence. This is insufficient.

    Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

    Conciseness5/5

    Is the description appropriately sized, front-loaded, and free of redundancy?

    The description is a single, efficient sentence with no waste. It is front-loaded and directly states the purpose.

    Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

    Completeness2/5

    Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

    Given 7 parameters (3 required) and no output schema, the description is incomplete. It lacks details on usage, parameters, and expected behavior, leaving significant gaps for the agent.

    Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

    Parameters1/5

    Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

    Schema description coverage is 0%, so the description should compensate. However, it does not explain any parameter meaning, leaving agents to infer from parameter names alone.

    Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

    Purpose5/5

    Does the description clearly state what the tool does and how it differs from similar tools?

    The description clearly states the tool's function: saving learned Japanese expressions as review cards. It uses a specific verb ('saves') and resource ('review cards'), and is distinct from sibling tools like correcting sentences or explaining expressions.

    Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

    Usage Guidelines2/5

    Does the description explain when to use this tool, when not to, or what alternatives exist?

    No guidance on when to use this tool versus alternatives. The description does not mention prerequisites, exclusions, or context for usage.

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

  • Behavior2/5

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

    No annotations are provided, so the description bears full responsibility for behavioral disclosure. It states the tool corrects and explains awkwardness, but does not disclose important traits such as whether it modifies the sentence, requires authenticity, or any limitations (e.g., only works for Japanese, input constraints). The behavior is underspecified.

    Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

    Conciseness4/5

    Is the description appropriately sized, front-loaded, and free of redundancy?

    The description is a single sentence that gets straight to the point: it corrects and explains. It is concise and front-loaded with the action. However, it omits important details that could be added without bloat, so it does not earn a 5.

    Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

    Completeness2/5

    Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

    Given the lack of output schema and annotations, and four parameters (three optional) with unclear semantics, the description is insufficient. It does not explain what the output format is, how optional parameters affect behavior, or any prerequisites. A correction tool for Japanese sentences requires more context for reliable use.

    Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

    Parameters2/5

    Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

    Schema description coverage is only 25% (only user_sentence has a description). The tool's description adds little beyond restating user_sentence as a user-written Japanese sentence. It does not explain the roles of tone, learner_level, or intended_meaning parameters, leaving the agent to infer their impact from enum names alone.

    Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

    Purpose5/5

    Does the description clearly state what the tool does and how it differs from similar tools?

    The description clearly states the verb (교정하다 - correct, 설명하다 - explain) and the resource (일본어 문장 - Japanese sentence). It specifies the audience (초급자 기준 - beginner level) and implies it is for self-written sentences. This distinguishes it from sibling tools like 'translate_kakao_message' or 'explain_expression'.

    Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

    Usage Guidelines3/5

    Does the description explain when to use this tool, when not to, or what alternatives exist?

    The description implies usage for correcting user-written Japanese sentences, but does not provide explicit when-to-use or when-not-to-use guidance. There is no mention of alternatives or conditions that would make this tool more appropriate than siblings, such as 'explain_expression' for individual expressions.

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

  • Behavior2/5

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

    No annotations provided, and the description does not disclose behavioral traits like side effects, authentication needs, or rate limits. Assumes read-only but not stated.

    Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

    Conciseness4/5

    Is the description appropriately sized, front-loaded, and free of redundancy?

    Single concise sentence in Korean. Front-loaded and free of fluff. Adequately sized for the tool's simplicity.

    Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

    Completeness4/5

    Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

    Given no output schema, the description lists the main output components (reading, romanization, meaning, usage, examples). Missing details on response structure or error handling, but sufficient for its purpose.

    Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

    Parameters2/5

    Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

    Schema description coverage is 33% (only 'expression' has a description). The tool description adds high-level output details but does not explain how parameters like 'context' or 'learner_level' affect the output. Does not compensate for low coverage.

    Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

    Purpose5/5

    Does the description clearly state what the tool does and how it differs from similar tools?

    The description clearly states it explains Japanese expressions for beginner learners, listing specific output elements (reading, romanization, meaning, usage, examples). This distinguishes it from siblings like correct_japanese_sentence or translate_kakao_message.

    Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

    Usage Guidelines2/5

    Does the description explain when to use this tool, when not to, or what alternatives exist?

    No guidance on when to use this tool versus siblings. Does not specify context, prerequisites, or exclusions. Implicitly for explaining expressions, but lacks direct comparison with alternatives.

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

  • Behavior2/5

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

    No annotations are provided, so the description must cover behavioral traits. It states the tool provides romanization, meaning, and expression breakdown, but does not describe whether the operation is read-only, if it requires authentication, any rate limits, or what the output format looks like. Transparency is minimal.

    Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

    Conciseness5/5

    Is the description appropriately sized, front-loaded, and free of redundancy?

    The description is a single sentence in Korean that effectively communicates the core purpose and key features. No redundant information; it is front-loaded and concise.

    Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

    Completeness2/5

    Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

    Given the complexity (6 parameters, 3 enums, no output schema), the description lacks detail on output structure, the role of tone and relationship, and how the multiple outputs (translation, romanization, breakdown) are returned. It is insufficient for an agent to fully understand the tool's behavior.

    Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

    Parameters3/5

    Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

    Schema description coverage is low (17%), but the description adds meaning for learner_level (beginner), include_romanization, and include_expression_breakdown via the stated output components. However, the tone and relationship parameters are not explained, leaving ambiguity in how they affect translation.

    Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

    Purpose5/5

    Does the description clearly state what the tool does and how it differs from similar tools?

    The description clearly states the tool converts Korean KakaoTalk sentences to natural Japanese, specifying the target output includes romanization, Korean meaning, and expression breakdown for beginners. This distinguishes it from sibling tools like correct_japanese_sentence (correction) or explain_expression (explanation of given expression).

    Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

    Usage Guidelines3/5

    Does the description explain when to use this tool, when not to, or what alternatives exist?

    The description implies usage for beginners but does not explicitly state when to use this tool over siblings (e.g., for translation vs. correction). No exclusions or alternatives are mentioned; usage context is only implied by the tool name and description.

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

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