Server Quality Checklist

Tool Scores

• search_itemsD
  1.7/5.0
  Behavior1/5

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

  No annotations are provided, so the description carries full burden for behavioral disclosure. It reveals nothing about whether this is a read/write operation, authentication requirements, rate limits, pagination behavior (beyond what's implied by continuationToken in schema), error conditions, or response format. For a search tool with 5 parameters and no output schema, this is critically inadequate.

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

  Conciseness2/5

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

  While technically concise (two words), this is under-specification rather than effective brevity. The description fails to front-load essential information and doesn't earn its place - it provides almost no value beyond the tool name itself. A truly concise description would still convey core purpose and context.

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

  Completeness1/5

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

  Given the tool's complexity (5 parameters, no output schema, no annotations), the description is completely inadequate. It doesn't explain what 'items' are, what search capabilities exist, how results are returned, or any behavioral characteristics. For a search operation that likely returns structured data, the absence of output schema means the description should at minimum indicate the nature of returned results.

  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 5 parameters. The description adds no parameter 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.

  Purpose2/5

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

  The description 'PlayFab search items' is a tautology that merely restates the tool name with a platform prefix. It doesn't specify what 'items' refers to (catalog items, inventory items, etc.), what action 'search' performs (filtering, text search, or both), or what resource domain this operates in. While it distinguishes from the sibling tools (which target players/segments rather than items), the purpose remains vague.

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

  Usage Guidelines1/5

  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. There's no mention of prerequisites, appropriate contexts, or comparison with other search methods. The sibling tools (get_all_players, get_all_segments) target different resources, but the description doesn't help an agent decide between searching items versus retrieving players/segments.

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

• get_all_segmentsC
  2/5.0
  Behavior1/5

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

  No annotations are provided, so the description carries the full burden of behavioral disclosure. The description only states the action ('get all segments') without any details on what this entails—e.g., whether it's a read-only operation, if it requires authentication, how it handles pagination or rate limits, or what the output looks like. This is inadequate for a tool with no annotation support.

  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 extremely concise ('PlayFab get all segments'), which could be efficient, but it under-specifies the tool's purpose and context. While it avoids unnecessary words, it fails to provide essential information that would help an agent use the tool correctly, making this brevity more of a deficiency than a strength.

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

  Completeness2/5

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

  Given the lack of annotations, no output schema, and a simple input schema with no parameters, the description is incomplete. It does not explain what 'segments' are, how the tool behaves, or what to expect in return, leaving significant gaps for an agent to understand and invoke the tool effectively in the context of sibling tools like 'get_all_players'.

  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 parameters with 100% coverage, meaning there are no parameters to document. The description does not add parameter details, which is appropriate here. A baseline of 4 is applied since no parameters exist, and the description does not mislead about inputs.

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

  Purpose2/5

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

  The description 'PlayFab get all segments' restates the tool name with minimal elaboration. It specifies the action ('get all') and resource ('segments'), but lacks specificity about what 'segments' are in the PlayFab context or how this differs from sibling tools like 'get_all_players' or 'search_items'. This is borderline tautological, as it essentially repeats the name with the platform prefix added.

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

  Usage Guidelines1/5

  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. It does not mention sibling tools like 'get_all_players' or 'search_items', nor does it specify contexts, prerequisites, or exclusions for usage. This leaves the agent with no information to make an informed choice among available tools.

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

• get_all_playersC
  2.7/5.0
  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 only states the action without disclosing behavioral traits such as pagination, rate limits, authentication needs, or what 'all players' entails (e.g., active only, includes metadata). This leaves significant gaps for safe and effective use.

  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 a single phrase 'PlayFab get all players', which is concise but under-specified. It front-loads the core action but lacks necessary context to be fully helpful. While not verbose, it misses opportunities to add value in a compact form.

  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 no annotations, no output schema, and a simple but vague description, this is incomplete for a tool that likely returns a list of players. The description doesn't explain return values, error handling, or operational constraints, leaving the agent with insufficient information for reliable 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 tool has 0 parameters with 100% schema description coverage, so no parameter documentation is needed. The description doesn't add parameter details, which is appropriate here. Baseline is 4 for zero parameters, as the schema fully covers the absence of inputs.

  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 'PlayFab get all players' states the action ('get') and resource ('players'), but lacks specificity about scope or format. It distinguishes from siblings like 'get_all_segments' by resource type, but doesn't clarify if this retrieves all players globally or within a context. The purpose is understandable but vague.

  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 'search_items'. The description doesn't mention prerequisites, limitations, or typical use cases. Without annotations or context, 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.