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AiAgentKarl

Legal Court MCP Server

by AiAgentKarl

Server Quality Checklist

67%
Profile completionA complete profile improves this server's visibility in search results.
  • Latest release: v0.1.0

  • Disambiguation5/5

    Each tool targets a distinct legal research need: case details, court info, citation search, keyword search, EU law, and judge info. No overlaps.

    Naming Consistency5/5

    All tool names follow a consistent verb_noun pattern with underscores (search_cases, get_case_details, etc.). No naming variations.

    Tool Count5/5

    6 tools cover the core needs of legal research (search, citation, details, court info, judges, EU law) without redundancy. Well-scoped.

    Completeness4/5

    Covers major functionalities for US and EU law research. Missing advanced features like docket access or filtering by date, but core workflows are present.

  • Average 4/5 across 6 of 6 tools scored.

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

    • No community issues in the last 6 months
    • 0 commits in the last 12 weeks
    • No stable releases found
    • No critical vulnerability alerts
    • No high-severity vulnerability alerts
    • No code scanning findings
    • CI status not available
  • 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?

    With no annotations provided, the description must fully disclose behavioral traits. It only mentions the read nature implicitly (search) but does not state that it is non-destructive, nor does it mention auth requirements, rate limits, or side effects. The description is insufficient for a 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.

    Conciseness5/5

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

    The description is concise and well-organized, with clear sections (Args, Returns, Examples). Every sentence adds value, and the structure is front-loaded with the core purpose.

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

    Completeness5/5

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

    Given the tool has only 2 parameters, no output schema, and no nested objects, the description adequately covers what is needed: search inputs, return format (title, CELEX number, date), and examples. No critical gaps remain.

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

    Parameters4/5

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

    The input schema has 0% description coverage, but the description compensates by explaining the 'query' parameter with examples and the 'limit' parameter with default and max values. This adds meaningful context beyond the schema types.

    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 states it searches EU law and case law via EUR-Lex, using a specific verb and resource. However, it does not explicitly differentiate from sibling tools like search_cases or search_by_citation, which may have overlapping scopes.

    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 includes usage tips such as using English search terms and default limit values, and provides examples. However, it lacks guidance on when to use this tool versus alternatives, and does not specify exclusions or prerequisites.

    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, and the description lacks any behavioral traits such as rate limits, authentication needs, or potential side effects. It only describes the return content, not how the tool behaves during operation.

    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 relatively concise with clear sections and an example. The first sentence states the purpose directly, though it could be slightly shorter without losing meaning.

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

    Completeness3/5

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

    For a simple retrieval tool with one parameter and no output schema, the description is adequate but incomplete. It lists return fields vaguely but does not mention error handling or API specifics.

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

    Parameters5/5

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

    The parameter case_id is simply a string in the schema, but the description adds critical context: it can be a cluster or opinion ID and is obtained from search_cases. This compensates for the 0% schema description 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 'Holt vollständige Details eines Falls von CourtListener', indicating a specific verb (holt), resource (Falldetails), and source (CourtListener). The example differentiates from sibling search tools by requiring a known ID.

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

    Usage Guidelines4/5

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

    The description explains that the case_id comes from search_cases, implying usage after searching. However, it does not explicitly state when not to use this tool or compare it to alternatives like search_by_citation.

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

  • Behavior3/5

    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 specifies returned fields (name, court, appointment, political affiliation) but does not disclose potential issues like no matches found, multiple matches, or required permissions. Adequate but not exhaustive.

    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 concise and well-structured with clear sections (Args, Returns, Beispiele). The first sentence immediately conveys purpose. No unnecessary information.

    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?

    For a simple tool with one parameter and no output schema, the description covers purpose, parameter usage, and return fields. It lacks details on edge cases (e.g., partial name matching, error handling) but is sufficient for basic use.

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

    Parameters4/5

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

    The schema has 0% description coverage for the single parameter 'name'. The description compensates by explaining the parameter meaning ('Name des Richters') and providing concrete examples (e.g., 'Ruth Bader Ginsburg'), adding significant value beyond the schema.

    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 'Sucht Richter nach Name und zeigt deren Informationen' (Search for judges by name and shows their information), providing a specific verb and resource. It differentiates from sibling tools like search_cases, search_by_citation, and search_eu_law, which handle different entities.

    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 searching judges by name, but provides no explicit guidance on when to use versus alternatives. Sibling tools are listed in context but not compared, limiting guidance.

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

  • Behavior3/5

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

    No annotations are provided. The description discloses return values but does not mention behavioral traits such as authentication requirements, rate limits, error handling for invalid court IDs, or potential side effects. It adequately describes what the tool does but lacks deeper transparency.

    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 well-structured with an Args/Returns section and examples. It is front-loaded with the main purpose. While it could be slightly more concise by moving the bullet list into the schema, it is efficient and not overly verbose.

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

    Completeness5/5

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

    For a simple tool with one parameter and no output schema, the description is complete. It covers the parameter format, return values, and provides usage examples. No further context is needed for an agent to select and invoke this tool correctly.

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

    Parameters5/5

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

    The input schema has zero coverage for the 'court_id' parameter. The description compensates excellently by listing valid values and formats (e.g., 'scotus', 'ca1'-'ca11', 'cafc') and providing examples. This adds significant meaning beyond the schema's bare definition.

    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 purpose: retrieving information about a specific court. It specifies the verb ('Holt Informationen') and resource ('Gericht'), and provides detailed examples of court IDs (e.g., 'scotus', 'ca1'-'ca11') and return fields (name, jurisdiction, founding date, status). The sibling tools (e.g., get_case_details, search_cases) are distinct in purpose.

    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 gives examples of how to use the tool but does not explicitly state when to use it versus alternatives. It implies usage through examples, but there is no guidance on when not to use it or which sibling tool to choose instead.

    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 carries full burden. It mentions no side effects, authentication requirements, rate limits, or behavior beyond searching. Since it's a search tool, it's likely read-only, but the description does not confirm this.

    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 concise with clear sections (Args, Returns, Examples). It is front-loaded with the main purpose, and every sentence adds value. No unnecessary words.

    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 the tool has 3 parameters, no output schema, and no annotations, the description covers the return format (cases with name, court, date, citation, excerpt). Lacks details on pagination or ordering, but is mostly complete for a search tool.

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

    Parameters5/5

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

    The input schema has 0% description coverage, yet the description fully explains each parameter: query as search terms, court as optional filter with examples (scotus, ca1-11, dcd), and limit with default (10) and max (20). This adds significant meaning beyond the schema.

    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 searches over 3 million US court decisions by keywords, using the specific verb 'Durchsucht' and resource 'US-Gerichtsentscheidungen'. It distinguishes itself from siblings like search_eu_law (EU law) and search_by_citation (citation search).

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

    Usage Guidelines4/5

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

    Examples show typical usage patterns, and the court parameter list provides guidance for filtering. However, it lacks explicit statements about when to use this tool vs. alternatives (e.g., when to use search_by_citation) or when not to use it.

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

  • Behavior3/5

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

    No annotations are provided, so the description carries full burden. It states it returns matching cases with metadata but does not disclose aspects like multiple results, error handling, or authentication needs. Basic transparency but limited.

    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 concise, structured with Args, Returns, and Beispiele sections. Every sentence adds value without repetition or fluff.

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

    Completeness5/5

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

    For a simple tool with one parameter and no output schema or annotations, the description covers purpose, parameter format, return type, and examples. It is complete enough for an agent to use correctly.

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

    Parameters4/5

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

    The input schema has no description for the citation parameter (0% coverage). The description compensates by providing a detailed explanation with examples of valid citations (e.g., '410 U.S. 113'). This adds significant meaning.

    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 'Findet einen Fall anhand seiner juristischen Zitierung' which is a specific verb+resource combination. It distinguishes from sibling tools like search_cases (general search) and get_case_details (case ID based).

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

    Usage Guidelines4/5

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

    The description provides examples of when to use the tool (e.g., '410 U.S. 113') and implies the input format. However, it does not explicitly state when not to use it or compare with alternatives like get_case_details.

    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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