Server Quality Checklist

Tool Scores

• plex_userB
  3/5.0
  Behavior1/5

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

  The annotations declare destructiveHint=false, yet the schema includes a 'delete' operation, and the description mentions consolidating user and access control operations, which implicitly includes delete. This is a contradiction between the described capability and the annotation. The description also does not clarify side effects, irreversibility, or permission requirements for mutations, leaving a transparency gap beyond the contradiction.

  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 a clear initial purpose, a rationale section, return format, and examples. It is concise enough but includes a somewhat verbose 'PORTMANTEAU PATTERN RATIONALE' that is not strictly necessary for usage. The front-loaded purpose sentence helps the agent quickly identify the tool's scope.

  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?

  Given the tool has 8 parameters, 6 operations, and no output schema, the description provides some necessary context (return format, examples) but omits operation-specific behavior, such as which operations require auth, the structure of the 'data' dict, or error cases. The annotation contradiction and lack of per-operation detail mean the description is not fully complete for an agent to use the tool confidently in all scenarios.

  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?

  The input schema provides 100% description coverage for all 8 parameters, so the schema carries the primary semantic burden. The description adds a few examples showing typical parameter combinations (e.g., create with username/email/password), which is helpful but not extensive. Overall, the description offers marginal value over the schema's existing parameter descriptions.

  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 that the tool handles "Comprehensive user management operations for Plex Media Server" and consolidates "6 user and access control operations." This distinguishes it from sibling tools like plex_library or plex_media, which focus on other domains. The purpose is clear but lacks a single specific verb; it is a portmanteau tool with varied operations.

  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 provides a rationale for consolidating operations to ensure "consistent security policy enforcement across shared libraries," which implies it is the go-to tool for user management. However, it does not explicitly state when to use it versus alternatives or when not to use it. Examples illustrate common operations but do not clarify exclusions or alternative tools.

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

• plex_integrationB
  3.1/5.0
  Behavior2/5

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

  Annotations provide minimal info (not read-only, not destructive). The description adds return format and examples, but fails to disclose side effects, authentication needs, rate limits, or behavior of individual operations like 'configure' or 'sync'. The portmanteau pattern note is useful but insufficient.

  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 headings (RATIONALE, Return Format, Examples), and examples are valuable. The rationale is slightly wordy but not excessive. Each section earns its place, though the portmanteau rationale could be shortened.

  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?

  This is a complex tool with 9 parameters and 6 operations, no output schema, and minimal annotations. The description provides a return format and examples, but it does not explain what each operation does, which integrations are available, or expected behavior in edge cases. Incomplete for a multi-operation integration tool.

  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 coverage is 100%, so parameters are well-documented there. The description adds value via examples showing how parameters like operation, content_type, limit, year, season, integration_name, and config are used together, but does not add new semantic meaning beyond the schema.

  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 uses a clear verb+resource structure ('third-party integration operations for Plex Media Server') and narrows scope with 'regional recommendations and niche metadata providers'. Examples of specific operations (vienna_recommendations, anime_season_info) add clarity, but it lacks an explicit comparison to sibling tools.

  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 rationale states it consolidates 6 external API integrations for unified access, implying usage for third-party data, but it does not explicitly say when to use this tool over siblings like plex_metadata or plex_media_enrichment. No exclusions or 'use this instead' guidance is provided.

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

• plex_organizationB
  3.1/5.0
  Behavior3/5

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

  Annotations state readOnlyHint=false and destructiveHint=false, so the description doesn't need to re-state these. It adds useful behavioral context with the return format and dry_run parameter examples, showing simulation capability. However, it doesn't disclose side effects like clean_bundles deleting files or optimize_database modifying the database, which is significant for a maintenance tool.

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

  Conciseness3/5

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

  The description is structured with sections (rationale, return format, examples) and is moderately sized, but the 'PORTMANTEAU PATTERN RATIONALE' paragraph is more meta-commentary than operational guidance. It's not as concise as it could be, yet the examples earn their place.

  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?

  With 8 parameters and 5 operations, this is a complex tool. The description provides a return format and examples but lacks detailed explanations of each operation (e.g., what exactly 'fix_issues' does, what 'organize' changes). No output schema, so the description should compensate, but it doesn't fully describe behaviors or edge cases. Adequate but with clear gaps.

  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 100%, so parameters are well documented in the schema. The description adds value through examples (e.g., threshold_days=30, vacuum=True) and the return format clue, but it doesn't deepen meaning for parameters like patterns or operation beyond what the schema provides. Baseline 3 is appropriate.

  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 the tool performs 'comprehensive library organization and maintenance operations for Plex Media Server' and lists five specific operations via the schema's enum. It distinguishes itself as a consolidated tool (portmanteau) for library maintenance and database optimization, though it could more explicitly differentiate from sibling tools like plex_library or plex_performance.

  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 explicit guidance on when to use this tool vs. alternatives is provided. The rationale mentions 'archival and cleanup workflows,' which gives a vague sense of use, but there are no exclusions or alternative tool references. The examples show operations but don't clarify when to choose this over other Plex tools.

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

• plex_media_enrichmentB
  3.2/5.0
  Behavior3/5

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

  The readOnlyHint annotation already signals a non-mutating operation, and the description adds a return format and an example call. However, it does not disclose per-operation behavior, potential side effects, external service dependencies, rate limits, or the structure of the returned data beyond a generic string.

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

  Conciseness3/5

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

  The description is fairly compact and includes useful return-format and example sections. However, the 'PORTMANTEAU PATTERN RATIONALE' section is redundant filler, and the phrase 'High-value' adds subjective noise without practical information.

  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?

  With three distinct operations and no output schema, the description only provides a generic return format and one example. It does not explain the behavior of get_external_metadata or analyze_trends, making the tool only partially complete for a multi-operation interface.

  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?

  All four parameters already have schema descriptions, so the bar for added value is lower. The example supplies a concrete call pattern (operation='enrich_item', title='Inception', year=2010), but the three enum operations are not explained individually, leaving the agent to guess what 'analyze_trends' or 'get_external_metadata' do.

  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 the tool is for 'media enrichment using external sources (Wikipedia, TMDB, TVDB)' and explains it adds 'Informed Discovery capabilities' by fetching contextual metadata. This distinguishes it from sibling tools like plex_metadata, though the exact meaning of 'enrichment' remains somewhat abstract.

  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 when external metadata beyond Plex's native data is needed, naming specific sources and noting that Plex does not natively provide this. However, it offers no explicit guidance about when to prefer this tool over alternatives like plex_metadata or plex_rag, nor any exclusions.

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

• plex_performanceA
  3.5/5.0
  Behavior1/5

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

  The description lists `delete_profile` as an operation, which is destructive, but the annotations declare `destructiveHint: false`. This is a direct contradiction, so by rule, behavioral transparency scores 1.

  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 structured with clear sections (rationale, operations, return format, examples) and is appropriately sized for a multi-operation tool. Every section serves a purpose, though it is lengthy.

  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?

  Despite the annotation contradiction, the description covers a broad set of operations, provides a generic return format, and shows usage examples. It lacks explicit parameter-to-operation mapping, but the schema covers parameter definitions, making the description reasonably complete.

  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 already describes all 10 parameters with high coverage. The description adds value by including concrete usage examples (e.g., `set_quality` with `profile_name` and `quality`), which illustrates how parameters map to operations beyond the schema's individual definitions.

  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 scope as 'Comprehensive performance, quality, and server status operations for Plex Media Server' and enumerates 12 specific operations with actionable verbs (get, set, create, delete). This distinguishes it from sibling tools by consolidating multiple domains into one interface.

  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 portmanteau rationale explains that the tool consolidates transcoding settings, bandwidth monitoring, and server health, implying it's the central place for these operations. However, it doesn't explicitly compare against sibling tools or specify when not to use it, leaving some inference to the agent.

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

• plex_ragA
  3.5/5.0
  Behavior3/5

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

  Annotations only specify readOnlyHint=false and destructiveHint=false, which is minimal. The description adds useful safety-relevant context: sync operations download and index content (implying mutation), and status checks health. However, it doesn't disclose potential side effects like API rate limits, storage growth, or how sync handles existing data. Since annotations are sparse, the description partially compensates but leaves gaps.

  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 headers, bullet points, and examples. It front-loads the core purpose and operations, then adds details. The portmanteau rationale paragraph is somewhat verbose and could be trimmed, but the overall structure is efficient and readable.

  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?

  With no output schema, the description provides a return format and examples, which is helpful. It covers all operations and key parameters. However, given the complexity of a multi-operation RAG tool, it could elaborate on error handling or index lifecycle (e.g., when to sync vs search), but the provided examples and return format make it sufficient for basic invocation.

  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 100%, so the input schema already documents each parameter. The description adds contextual grouping (e.g., 'query for search operations', 'media_id/library_id for sync operations') but doesn't go beyond the schema's own descriptions. The examples clarify parameter usage but are redundant with schema defaults, so score stays at baseline 3.

  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 this as a RAG integration tool for Plex Media with a list of operations (semantic_search, search_subtitles, sync_metadata, sync_subtitles, status). It distinguishes itself from siblings by focusing on semantic search and knowledge lifecycle, though it doesn't explicitly contrast with specific siblings like plex_search.

  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 through the operation examples, but it doesn't provide explicit when-to-use guidance or mention alternatives. The portmanteau rationale explains why operations are consolidated but lacks concrete situational context (e.g., 'use semantic_search when you need natural language queries rather than keyword search').

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

• plex_reportingA
  3.5/5.0
  Behavior3/5

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

  Annotations provide readOnlyHint=true, which already indicates a safe read operation. The description adds behavioral context by mentioning server diagnostic operations and outlining the return format (ToolResult with 'success', 'operation', and report fields). It does not discuss additional traits like rate limits or auth requirements, but for a read-only reporting tool with annotations, this is adequate.

  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 clear sections for purpose, rationale, return format, and examples. It is somewhat verbose with the portmanteau rationale, but the examples and return format are valuable. It front-loads the purpose and remains readable, though a tighter version could omit the rationale paragraph.

  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's complexity (5 parameters, 6 operation enums, no output schema), the description provides a reasonable level of completeness. It states the return format, gives multiple examples, and mentions the overall goal. It does not detail each operation individually, but the enum names are self-explanatory and the schema describes them. The readOnlyHint annotation covers safety, so the description is adequate for selection and invocation.

  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 100%, so all 5 parameters are described in the input schema. The description does not add much beyond the schema, but it does provide usage examples that clarify how parameters like 'operation' and 'library_id' are used. Since the schema already does the heavy lifting, a baseline of 3 is appropriate.

  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 tool as a 'Comprehensive reporting and analytics tool for Plex Media Server' and mentions it consolidates 6 reporting and server diagnostic operations. It specifies the resource (Plex Media Server) and the general function, but does not explicitly differentiate from specific sibling tools beyond the broad category of reporting/diagnostics.

  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 a 'PORTMANTEAU PATTERN RATIONALE' explaining that it consolidates reporting operations for a systematic overview, which implies usage for reporting/analytics. It also provides examples of how to invoke it. However, it does not explicitly state when to use this tool versus alternatives, nor does it mention exclusions 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.

• plex_libraryA
  3.6/5.0
  Behavior3/5

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

  Annotations already declare destructiveHint=true, which covers the destructive nature. The description adds a list of destructive operations (delete, remove_location, empty_trash, clean_bundles) and a return format, but does not elaborate on side effects, permissions, or operational impacts (e.g., resource-intensive scans). This is minimal additional value beyond annotations.

  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 clear sections: purpose, rationale, operations list, return format, and examples. It is front-loaded with the main purpose and remains readable despite the long operation list. The rationale is slightly meta but useful for understanding the tool's design, and no sentence feels redundant.

  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 tool with 13 operations and 14 parameters, the description provides a return format and examples but lacks a crucial operation-to-parameter compatibility matrix (e.g., which params are required for create vs list_items). While the schema descriptions partially cover this, the absence of an output schema increases the burden on the description, which is only partially met.

  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?

  The input schema has 100% description coverage, with each parameter individually described (e.g., 'Sort field for list_items', 'Type of media library to create'). The description adds only examples that show parameter usage but does not provide any parameter-to-operation mapping or additional semantic detail beyond the schema, so the baseline 3 is appropriate.

  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 'Comprehensive library management operations for Plex Media Server' and enumerates 13 specific operations (list, get, create, update, delete, scan, etc.), providing a specific verb+resource structure. This distinguishes it from sibling tools like plex_media, plex_collections, and plex_search, which focus on other aspects of Plex management.

  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 a portmanteau rationale and lists operations, implying use for library lifecycle management, but provides no explicit guidance on when to use this tool versus alternatives like plex_media or plex_collections. There is no mention of when not to use this tool or prerequisite conditions, leaving selection largely to the agent's inference.

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

• plex_mediaA
  3.6/5.0
  Behavior3/5

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

  Annotations only indicate readOnlyHint=false and destructiveHint=false, which are minimal and default-like. The description adds the return format and operation semantics, including the existence of update_metadata as a mutation. However, it does not disclose whether updates are persistent, require permissions, or have side effects. This is acceptable but not rich beyond the structured data.

  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 clear sections (rationale, operations, return format, examples). Some redundancy exists between 'comprehensive media management' and the portmanteau rationale, but each section serves a purpose and the length is justified given the tool's complexity. Front-loading the operations list aids quick scanning.

  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?

  The description covers the core return format and provides examples for three of the five operations, but it lacks explicit mapping of parameters to operations and omits examples for get_recent and update_metadata. Given the tool's 14 parameters and multiple operations, this leaves gaps for an agent to infer correct usage, though the schema and operation list provide partial coverage.

  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 100%, so the baseline is 3. The description adds some value through examples that map parameters to operations (e.g., library_id for browse, query for search, media_key for get_details) and mentions metadata fields. But it does not systematically explain which parameters apply to which operation, relying largely on the schema's already-descriptive fields.

  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 is a comprehensive media management tool with a specific list of operations (browse, search, get_details, get_recent, update_metadata). Each operation is described with a verb and resource, and the portmanteau rationale explicitly differentiates it from more specialized sibling tools by consolidating multiple capabilities into one interface.

  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 provides clear context for when to use this tool (for browsing, searching, and metadata updates) via the operations list and portmanteau rationale. However, it does not explicitly mention alternatives or exclusions, even though siblings like plex_search, plex_metadata, and plex_library likely overlap. The usage is implied but not contrasted with alternatives.

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

• plex_playlistA
  3.7/5.0
  Behavior3/5

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

  Annotations already indicate destructiveHint=true and readOnlyHint=false, so the mutating/destructive nature is known. The description adds a return format and examples, but does not elaborate on irreversible actions, permission requirements, or edge cases like deleting a playlist. While it doesn't contradict annotations, it provides minimal extra behavioral context beyond what the annotations already convey.

  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-organized with clear sections for rationale, return format, and examples. The portmanteau rationale and examples are justified, though the description is a bit verbose. Each section serves a purpose, and the structure makes it easy to scan.

  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?

  With 8 operations and 7 parameters, the description provides a general return format and examples but omits per-operation parameter requirements. For instance, which parameters are required for 'update' or 'get_analytics' is not specified. The schema does not define required params per operation, leaving gaps that an agent must infer, so the description is not fully complete.

  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?

  Schema descriptions cover 100% of parameters, providing a solid baseline. The description's examples illustrate parameter combinations for common operations (e.g., create with title and items, add_items with playlist_id and items), adding practical usage semantics beyond the schema. It does not explain all parameter relationships, but the examples meaningfully enhance understanding.

  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 'Comprehensive playlist management operations for Plex Media Server' with a specific verb (management) and resource (playlist). It enumerates 8 operations via the schema enum, making the scope unambiguous. However, it does not explicitly differentiate from sibling tools like plex_collections, though the name itself implies playlist focus.

  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 PORTMANTEAU PATTERN RATIONALE explicitly states it 'Consolidates 8 playlist lifecycle operations into a single tool to provide a unified interface,' giving clear guidance to use this tool for all playlist operations. It lacks explicit when-not-to-use or alternative tool references, but the unified interface rationale effectively implies usage context.

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

• arr_stackA
  3.9/5.0
  Behavior4/5

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

  With readOnlyHint=true already declared, the description adds the return envelope ({success, data, message}) and an example call. It clearly indicates a query-only operation and does not contradict the annotation.

  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 first sentence is front-loaded and the Return Format/Example sections are useful. The PORTMANTEAU PATTERN RATIONALE is not essential for operation, but the overall description is compact and clearly structured.

  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 one-parameter status query with a readOnly annotation, the description provides sufficient operating context via the return format and example. It does not detail the data payload fields, but the use case is straightforward and no output schema exists.

  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 coverage is 100% and the only parameter is a const 'status' with a description. The description adds an example with operation='status' but no additional semantic detail beyond the schema, so baseline 3 is appropriate.

  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 opens with 'Query Radarr, Sonarr, and Lidarr HTTP APIs for media stack health,' providing a specific verb, concrete resources, and clear scope. It also distinguishes itself from the Plex-focused sibling tools.

  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 purpose implies use for checking ARR stack health, but there is no explicit 'when to use this tool' or 'when to use an alternative.' The portmanteau rationale explains the consolidation but does not provide practical usage guidance.

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

• plex_collectionsA
  3.9/5.0
  Behavior3/5

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

  Annotations declare readOnlyHint=false and destructiveHint=false, and the description does not contradict these. The description adds the return format and examples, but does not elaborate on side effects, permissions, or specifics of destructive operations like delete. For a multi-operation tool, more behavioral context would be helpful.

  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 structured with a rationale, return format, and examples. While the portmanteau rationale adds context, the text is slightly verbose but each section provides useful 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?

  The tool is complex with 7 operations, and the description provides a clear return format and representative examples. However, it does not detail the behavior of each operation or edge cases, relying heavily on the schema's enum definitions.

  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 already provides 100% description coverage for all parameters. The description enhances understanding by showing examples such as operation='list' and operation='create' with title and library_id, demonstrating how parameters are used together.

  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 identifies the tool as a collections management tool for Plex, consolidating 7 operations (list, get, create, update, delete, add_items, remove_items). This distinguishes it from siblings by focusing specifically on collections rather than playlists or general library management.

  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 explains the portmanteau rationale and provides examples, but does not explicitly state when to use this tool over other Plex tools. It implies usage for collection-related tasks but lacks exclusionary guidance or alternative recommendations.

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

• plex_streamingA
  3.9/5.0
  Behavior3/5

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

  Annotations provide only a basic safety profile (not read-only, not destructive). The description adds useful behavioral details like 'auto-selects if omitted' for play and the generic control operation, but it does not disclose side effects, authentication needs, or error behavior. Given the annotations, this is adequate but not rich.

  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 longer than necessary but well-structured with an operations list, return format, and examples. The 'PORTMANTEAU PATTERN RATIONALE' section adds context but could be trimmed. Overall, it is organized and readable with no wasted repetition.

  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?

  The tool has 8 parameters and no output schema, but the description provides a return format and example calls for key operations. This covers the main context needed for an agent to understand invocation and expected responses, although it does not cover every operation with an example.

  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 coverage is 100%, so the schema already documents every parameter. The description adds a few extra semantics (e.g., client auto-selection, seek in milliseconds) and provides examples, but these are supplementary to the schema rather than essential.

  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 'Comprehensive playback control and session management operations for Plex Media Server' with a specific verb+resource scope. It lists concrete operations (list_sessions, play, pause, seek, etc.) that distinguish it from sibling Plex tools like plex_playlist or plex_library.

  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 implies usage context by presenting the tool as the consolidated for playback and session management, with operations listed. However, it does not explicitly mention when not to use it or direct to alternatives for other Plex tasks, so it falls short of full guidance.

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

• plex_metadataA
  4/5.0
  Behavior3/5

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

  Annotations indicate readOnlyHint=false and destructiveHint=false, so the tool mutates data but is not destructive. The description adds the return format ('success', 'operation', 'data', etc.) but does not disclose side effects, permission requirements, or how operations behave (e.g., whether refresh forces a full rescan). This is acceptable but not rich.

  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 a purpose statement, rationale, return format, and examples. It is somewhat lengthy but justified by the tool's complexity (7 operations). The 'PORTMANTEAU PATTERN RATIONALE' adds context but could be trimmed; still, every section serves a purpose.

  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 complex tool with 7 operations and 8 parameters, the description provides a return format and examples covering 4 operations but omits fix_match, match, and organize. It does not explain what each operation does beyond its name. Without an output schema, this leaves gaps for understanding all behaviors.

  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?

  Schema coverage is 100%, so baseline is 3. The description adds value by showing operation-specific combinations via examples (e.g., refresh uses library_id, update uses item_id and metadata), which the schema alone does not convey. This clarifies parameter usage beyond individual field descriptions.

  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 performs 'Comprehensive metadata management operations for Plex Media Server' and consolidates 7 lifecycle operations. The examples and schema enum further specify concrete actions (refresh, update, analyze, etc.), distinguishing it from siblings like plex_library or plex_media.

  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?

  Implied usage is clear: for metadata maintenance operations. The description notes 'consistent identifier handling and improved discovery of library maintenance tasks', providing context for when to choose this tool. However, it does not explicitly name alternatives or state when NOT to use it, so it falls short of a 5.

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

• plex_audio_mgrA
  4.1/5.0
  Behavior4/5

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

  Annotations declare readOnly=false and destructive=false, and the description aligns by describing control operations with immediate effects (e.g., 'set_volume', 'mute'). It adds the return format and examples, going beyond annotations. It doesn't detail side effects of operations like 'handover' or 'select_stream', but given the annotations and operation names, the transparency is adequate.

  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 well-structured and front-loaded with the main purpose, followed by the rationale, return format, and examples. Every section earns its place—the rationale explains the consolidation, the return format is essential given no output schema, and the examples are practical. It is concise without unnecessary fluff.

  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 tool with 7 operations, 6 parameters, and no output schema, the description provides the return format and examples, covering essential invocation details. However, operation-specific behaviors (e.g., what 'handover' does) are not explicitly described beyond the enum and parameter names. Still, the schema covers parameter meanings, and the examples illuminate common operations, making it reasonably complete.

  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?

  Schema description coverage is 100%, so the baseline is 3. The description adds value by providing examples that map specific parameters to operations (e.g., operation='list_streams' with media_key; operation='set_volume' with client_id and volume). These examples help the agent understand parameter-operation relationships beyond the schema's field descriptions.

  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 tool as audio management operations for Plex Media Server, mentioning 'audio-focused control operations' and 'real-time playback adjustments.' It differentiates reasonably from siblings like plex_streaming or plex_quality through its focus on control operations, though it doesn't explicitly name those alternatives.

  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 portmanteau rationale explicitly states the consolidation for minimizing latency during real-time playback adjustments and stream switching, giving a clear usage context. It does not explicitly state when not to use it or name alternative tools, but the 'real-time' context strongly implies its targeted use case.

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

• plex_qualityA
  4.1/5.0
  Behavior3/5

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

  Annotations already declare readOnlyHint=false and destructiveHint=true, indicating mutating and destructive operations. The description adds the portmanteau rationale and return format, but does not elaborate on specific side effects (e.g., whether delete is reversible or if update overwrites all settings). It does not contradict annotations.

  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 a rationale, return format, and examples. It is somewhat verbose but each section adds value; the examples and return format are essential for a multi-operation tool.

  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?

  With 6 operations, 4 params, no output schema, and destructive annotations, the description compensates by providing a return format and usage examples. It covers the main usage patterns and is adequate, though it doesn't detail error handling or per-operation nuances.

  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?

  Schema coverage is 100%, but the examples add practical meaning: e.g., 'settings={"max_bitrate": 40000}' clarifies the settings dictionary structure, going beyond the bare schema description. This helps the agent form correct invocations.

  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 'Comprehensive quality profile management tool for Plex Media Server' and lists the six operations in the schema and rationale. This is a specific verb+resource that distinguishes it from sibling tools focused on other Plex aspects.

  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 portmanteau pattern rationale explains the tool consolidates quality profile operations to standardize transcoding rules and resolution limits, providing clear context for when to use it. It does not explicitly name alternatives or exclusions, but the context is strong.

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

• plex_searchA
  4.1/5.0
  Behavior4/5

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

  The description discloses mutating behavior via 'save_search: Persist complex filters for future recall' and provides a consistent return format. It aligns with annotations (readOnlyHint=false, destructiveHint=false) and adds operation-specific semantics without contradicting them.

  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 structured with clear sections (RATIONALE, OPERATIONS, Return Format, Examples) and each section contributes useful information. The PORTMANTEAU PATTERN RATIONALE is somewhat verbose but aids understanding of the consolidation.

  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 tool with 5 operations and 27 parameters, the description gives a good overview with return format and examples. It could be more complete by specifying operation-specific parameter requirements (e.g., which parameters apply to which operation), but overall it's sufficient.

  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?

  The input schema provides descriptions for all 27 parameters, so the description need not add parameter-level details. The examples demonstrate usage of 'query' and 'genre'/'year', slightly enhancing understanding, but overall the description doesn't extend the schema's 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's a 'Comprehensive search management tool for Plex Media Server' and enumerates five distinct operations (search, advanced_search, suggest, recent_searches, save_search), making its purpose unambiguous. It differentiates from sibling tools by focusing specifically on search operations across media types.

  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?

  Each operation is briefly described (e.g., 'search: Keyword-based text search across libraries'), giving clear context for when to use that mode. However, it does not explicitly state when to prefer this tool over siblings like plex_media or plex_library, and no exclusions are provided.

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

• plex_serverA
  4.1/5.0
  Behavior4/5

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

  Annotations only say readOnlyHint=false and destructiveHint=false, giving little safety information. The description compensates by listing mutating operations (maintenance, restart, update), noting OS/wrapper limitations, and specifying the return format. It does not detail side effects like downtime, but overall it adds meaningful behavioral context beyond annotations.

  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 clear sections: purpose, rationale, operations, return format, and examples. The PORTMANTEAU PATTERN RATIONALE is slightly meta and could be trimmed, but it is brief and helps justify the tool's existence. Overall, it is concise and front-loaded.

  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 multi-operation tool with no output schema, the description provides a clear return format, six operation definitions, maintenance sub-operations, and two examples. It is reasonably complete for an agent to select and invoke operations, though per-operation result details are not exhaustively described.

  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?

  The input schema covers 100% of parameters with descriptions, already explaining operation, maintenance_operation, and options. The tool description adds some operational context and examples, but does not enrich parameter-level meaning beyond what the schema provides. Baseline 3 is appropriate.

  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 opens with 'Comprehensive server management operations for Plex Media Server,' clearly identifying the resource and action scope. It then enumerates six distinct operations (status, info, health, maintenance, restart, update), which sharply differentiates it from the many plex_* sibling tools focused on libraries, media, search, etc.

  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 positions the tool as consolidating server lifecycle and maintenance tasks and notes that it is for admin-level tasks. This provides clear context on when to use it, though it does not explicitly mention alternatives or exclusions (e.g., 'use plex_library for library-specific tasks').

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

• plex_ffmpeg_mgrA
  4.3/5.0
  Behavior4/5

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

  Annotations already declare destructiveHint=true, and the description adds useful context beyond that: it lists operations that modify files (sync_audio, sync_subtitles, set_aspect), mentions that revert restores a '.bak backup', and indicates that extract operations create sidecar files. This goes beyond the generic annotation to explain what gets modified and how reversibility works.

  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 longer than typical but well-structured with clear sections (rationale, operations, return format, examples). It front-loads the main purpose and uses bullet points for readability. While some phrases like 'Industrial-grade' are fluff, most sentences provide functional information. It earns a solid 4 rather than 5 because of verbosity.

  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?

  This is a complex multi-operation tool with 9 parameters and no output schema, so the description carries a heavy burden. It handles this well by providing a return format template, examples, and an operation list that gives semantic meaning to the enum. However, it does not detail what each operation returns in its data dict, which would be helpful for an agent to parse results 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?

  Schema coverage is 100%, so baseline is 3. The description adds value by mapping operation names to their behavior, which clarifies which parameters are relevant for which operation (e.g., offset_seconds for sync, start_seconds/duration_seconds for extraction). The examples also demonstrate usage of optional parameters, such as a negative offset_seconds, and show how media_key is used.

  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 is an 'Industrial-grade FFmpeg management tool for Plex media' and enumerates eight distinct operations (probe, sync_audio, sync_subtitles, revert, etc.), giving a specific verb, resource, and scope. It also distinguishes itself from sibling tools by noting it 'consolidates low-level media repair and inspection tasks requiring system-level FFmpeg binaries.'

  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 rationale paragraph provides clear context for when to use this tool: for broken rips or sync-drifted media that require low-level FFmpeg operations, and it explains that consolidation prevents tool explosion. However, it does not explicitly name alternative tools to use instead (e.g., plex_metadata for high-level metadata), so it stops short of full exclusionary guidance.

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

• plex_helpA
  4.4/5.0
  Behavior4/5

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

  Annotations provide readOnlyHint=true, and the description adds valuable behavioral context: it specifies the return format (success, operation, tools, help, error) and provides usage examples. There is no contradiction with annotations.

  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 headings and sections (operations, return format, examples), making it easy to scan. The 'PORTMANTEAU PATTERN RATIONALE' section is slightly verbose but explains why multiple operations are consolidated, which is useful for the agent. Overall, every section serves a 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?

  With no output schema, the description provides a comprehensive return format and usage examples. All 5 operations are described, parameters are covered through the operation list and examples, making it complete for a help tool of moderate complexity.

  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?

  Schema coverage is 100% and the description adds depth beyond the schema: each operation enum value is explained in the OPERATIONS section, and examples clarify how tool_name relates to tool_info/examples. This goes beyond the schema's minimal descriptions.

  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 is a 'Comprehensive help and discovery tool for PlexMCP' and enumerates five specific operations (help, list_tools, tool_info, examples, api_docs). This distinguishes it from sibling tools that focus on specific media operations.

  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 mentions it facilitates 'autonomous exploration of available capabilities without requiring external documentation', giving clear context for when to use it. However, it does not explicitly name alternatives or state when *not* to use the tool, though that is reasonably implied for a help tool.

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

• agentic_plex_workflowA
  4.5/5.0
  Behavior4/5

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

  Beyond the annotations (readOnlyHint=false, destructiveHint=false), the description discloses the iterative execution pattern, the max_iterations limit, and the exact return format (ToolResult with success, final_output, iterations, executed_tools). This adds meaningful context about the tool's behavior, though it does not detail side effects of the executed sub-tools.

  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 well-structured with headers for the mechanism, return format, and example. Every sentence earns its place, and it remains compact despite covering multiple aspects.

  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 complex workflow-orchestration tool, the description covers purpose, execution flow, termination criteria, return format, and a realistic example. The absence of an output schema is compensated by the explicit return-format section, making it sufficient for an agent to invoke 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?

  All three parameters are fully described in the schema (100% coverage). The description adds interaction context by explaining how workflow_prompt and available_tools drive the tool-selection loop and by providing a concrete code example that demonstrates parameter usage.

  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 'Multi-step Plex workflows via FastMCP sampling with tool execution' and explains the loop of the model selecting plex_* tools and the server executing them. This specific verb+resource description distinguishes it from sibling tools, which are individual operations (e.g., plex_library, plex_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?

  The description explicitly describes the orchestration mechanism and provides an example (workflow_prompt='Show me my movie libraries'), implying use for complex multi-step queries. However, it does not explicitly state when NOT to use it (e.g., for single-step actions use the specific plex_* tool directly), so it lacks exclusions.

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

• plex_natural_assistantA
  4.7/5.0
  Behavior5/5

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

  The description adds significant behavioral context beyond annotations: it states the tool uses 'the configured sampling endpoint (Ollama / client)' and explicitly says 'no tool execution', which clarifies it does not perform actions on the server. It also describes the return format, giving the agent a clear picture of what to expect. Annotations are neutral (both false), so the description carries the burden and does so thoroughly.

  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 well-structured: the first sentence gives the core purpose, followed by usage guidance, return format, and examples. Every sentence earns its place, and the content is compact without being terse. The use of headers and examples makes it scannable and clear.

  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 tool with only 2 parameters and no output schema, the description is remarkably complete. It explains the tool's scope (single-turn, sampling), clarifies its limitations (no tool execution), points to alternatives, specifies the return format, and gives concrete examples. The agent has all information needed to select and invoke the tool correctly.

  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 100%, so the baseline is 3. The description does not add meaning beyond the schema; it provides examples of calls but no additional explanation of parameter semantics. The examples are illustrative but not necessary since the schema already defines user_query and detail_level with descriptions.

  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 provides 'Single-turn natural-language help about Plex (sampling, no tool execution)', which is specific and immediately distinguishes it from sibling tools like agentic_plex_workflow. It also names the exact resource ('Plex') and the nature ('natural-language help'), leaving no ambiguity about what the tool does.

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

  Usage Guidelines5/5

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

  The description explicitly says 'For actions that change server state or need live data, use portmanteau tools or agentic_plex_workflow.' This provides clear when-to-use and when-not-to-use guidance, directing the agent to alternatives for state-changing operations while implying this tool is for informational queries.

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