Server Quality Checklist

Tool Scores

• function_callingC
  2.7/5.0
  Behavior2/5

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

  With no annotations, the description carries full burden but only states the basic action without disclosing behavioral traits like rate limits, authentication needs, error handling, or output format. It mentions Grok AI but doesn't explain what that entails operationally, leaving significant gaps in transparency.

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

  Conciseness5/5

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

  The description is a single, efficient sentence with zero waste, front-loading the core purpose. It's appropriately sized for the tool's complexity, making it easy to parse without unnecessary elaboration.

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

  Completeness2/5

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

  Given the tool's complexity (4 parameters, no annotations, no output schema), the description is incomplete. It doesn't explain the return values, error conditions, or how function calling integrates with user input, leaving the agent under-informed for effective use.

  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 schema fully documents all 4 parameters. The description adds no meaning beyond what the schema provides, not explaining how parameters like messages or tools relate to function calling. Baseline 3 is appropriate as the schema does the heavy lifting.

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

  Purpose3/5

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

  The description states the tool 'call[s] functions based on user input' using Grok AI, which gives a general purpose but lacks specificity about what functions are called or how this differs from sibling tools like chat_completion. It's vague about the exact verb+resource combination beyond invoking AI capabilities.

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

  Usage Guidelines2/5

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

  No guidance is provided on when to use this tool versus alternatives like chat_completion or image_understanding. The description implies it's for function calling but doesn't specify contexts, prerequisites, or exclusions, leaving the agent without clear usage direction.

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

• image_understandingC
  2.8/5.0
  Behavior2/5

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

  With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool analyzes images but does not describe what the analysis entails (e.g., object detection, captioning, OCR), potential limitations (e.g., image size restrictions, rate limits), or authentication needs. The note about Grok 3 adds confusion rather than transparency.

  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 brief but includes a parenthetical note that is speculative and not directly relevant to the tool's current functionality, reducing efficiency. It is front-loaded with the core purpose, but the extra sentence detracts from conciseness without adding value.

  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?

  For a tool with no annotations and no output schema, the description is incomplete. It lacks details on what the analysis returns (e.g., text descriptions, structured data), error conditions, or behavioral traits like rate limits. The note about Grok 3 does not compensate for these gaps, leaving the agent with insufficient context for effective use.

  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 schema already documents all four parameters thoroughly. The description adds no additional meaning about parameters beyond what the schema provides, such as explaining interactions between base64_image and image_url or elaborating on model options. Baseline 3 is appropriate as the schema does the heavy lifting.

  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's purpose as 'Analyze images using Grok AI vision capabilities' with a specific verb ('Analyze') and resource ('images'), distinguishing it from sibling tools like chat_completion and function_calling. However, it includes a parenthetical note about Grok 3 potentially supporting image creation, which slightly dilutes the clarity by introducing unrelated future capabilities.

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

  Usage Guidelines2/5

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

  The description provides no guidance on when to use this tool versus alternatives like chat_completion or function_calling. It mentions Grok 3 may support image creation, but this is speculative and not actionable for current usage decisions. No explicit when/when-not scenarios or prerequisites are included.

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

• chat_completionC
  2.9/5.0
  Behavior2/5

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

  With no annotations provided, the description carries full burden for behavioral disclosure but offers minimal information. It states what the tool does but doesn't describe rate limits, authentication requirements, response formats, error conditions, or any operational constraints. For a generative AI tool with significant behavioral implications, this is inadequate.

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

  Conciseness5/5

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

  The description is a single, efficient sentence that states the core purpose without unnecessary elaboration. It's appropriately sized for a tool with comprehensive schema documentation and gets straight to the point with zero wasted words.

  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?

  For a generative AI tool with no annotations and no output schema, the description is insufficient. It doesn't explain what kind of response is generated, how to interpret results, error handling, or operational constraints. The agent lacks crucial context about this tool's behavior and outputs despite the comprehensive input schema.

  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 schema fully documents all 4 parameters. The description adds no parameter-specific information beyond what's already in the schema. According to scoring rules, when schema coverage is high (>80%), the baseline is 3 even with no param info in description.

  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 action ('Generate a response') and the resource/technology ('using Grok AI chat completion'), which is specific and unambiguous. However, it doesn't differentiate this tool from its sibling tools (function_calling, image_understanding) - all three appear to be different Grok AI capabilities, but the description doesn't explain how chat completion differs from function calling or image understanding.

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

  Usage Guidelines2/5

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

  The description provides no guidance on when to use this tool versus its siblings. There's no mention of appropriate contexts for chat completion versus function calling or image understanding, nor any prerequisites or constraints. The agent must infer usage from the tool name alone.

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