Server Quality Checklist

Tool Scores

• get_alternativesA
  4.1/5.0
  Behavior4/5

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

  Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is known. The description adds valuable context about what the tool returns: a verdict, a ranked list with prices, and why teams leave, plus the nuance that staying put is an option. It also implies an open-world knowledge base (consistent with openWorldHint). This goes beyond annotations and gives the agent a richer behavioral picture.

  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 efficient and front-loaded with the core purpose, then details the return content, and ends with a clear 'WHEN TO USE' section. Every sentence adds value; there is no fluff. It is not overly verbose, though the first sentence is a bit rhetorical ('the question this site exists to answer'), which is minor. Overall, well-structured and concise.

  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 simplicity (one parameter, read-only, no output schema), the description adequately covers what the agent needs: the purpose, the return structure (verdict, ranked list, price, reasons), and the use cases. It does not describe output format or pagination, but for this simple tool and with no output schema, it is sufficiently complete. A small caveat is that it doesn't explain how the 'slug' is validated or what happens if not found, but that is minor.

  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% for the single parameter 'slug', which already describes it as 'Slug of the tool being replaced'. The description does not add further parameter-level detail (e.g., format variations or examples) beyond what the schema provides. Per the rubric, with high schema coverage, a baseline of 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 the tool's purpose: to return alternatives to a given tool, including a verdict on which alternative fits which buyer situation and whether staying put is best. It is specific about the resource (a tool identified by slug) and the outcome (ranked alternatives with price and reasons teams leave). This clearly distinguishes it from siblings like search_tools (searching for tools) and get_tool (getting tool details), even without naming them.

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

  Usage Guidelines4/5

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

  The description provides explicit when-to-use triggers: any 'alternatives to X', 'replace X', 'X competitors', or 'something cheaper than X' question. However, it does not mention when NOT to use it or contrast with sibling tools, so it lacks exclusions. The guidance is clear but could be strengthened by noting that it differs from search_tools (which finds tools) and get_tool (which fetches details).

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

• get_toolA
  4.3/5.0
  Behavior4/5

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

  Annotations already declare readOnlyHint=true, openWorldHint=true, destructiveHint=false, so the safety profile is covered. The description adds real behavioral context: discloses the detail depth including vendor source URL and the freshness date of pricing, and that suitability is covered both ways. 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.

  Conciseness5/5

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

  Two sentences with zero filler. The core purpose and scope are front-loaded in the first sentence, and the usage guidance occupies the second. Every clause earns its place.

  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?

  Complete for a single-parameter read-only tool whose safety profile is carried by annotations and whose parameter is fully covered by the schema. The description tells the agent what it will receive and when to use the sibling instead; nothing essential is missing.

  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 single parameter is already well documented with an example ('notion' or 'zendesk'). The description's 'by slug' reinforces the parameter usage without adding new syntax or format detail, 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?

  States a specific verb ('get') with a resource ('one tool by slug') and enumerates the returned fields (what it is, pricing with source URL and check date, who it suits, who not). Clearly distinguishable from siblings: it retrieves one item, search_tools finds items, get_alternatives lists 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?

  Explicitly names the condition for the main alternative: 'Use search_tools first if you do not know the slug.' Gives clear context for when to use this tool vs. search_tools. Does not explicitly address get_alternatives, but that relationship is less load-bearing for correct invocation.

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

• search_toolsA
  4.3/5.0
  Behavior4/5

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

  Annotations already declare readOnlyHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered, lowering the bar. The description adds genuine non-annotation context: 'Every result carries the price, the vendor page it was read from, and the date it was checked.' This provenance detail aligns with the openWorldHint and tells the agent what data accompanies each hit, filling a real gap since there is no output schema.

  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 core purpose is front-loaded in the first sentence, and the WHEN TO USE block is separated to aid scanning. Wording like 'right match' where 'best-match' would do is minor; overall every sentence earns its place with routing and result-shape information rather than filler.

  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 5-parameter, all-optional tool with no output schema, the description compensates well: it documents the free-text/category/free-tier/max-price filters, explains result contents (price, vendor page, check date) where an output schema would normally live, and completes the sibling routing. The only omission is pagination beyond the schema's default-10 limit, but all parameters are already fully documented in the 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%, and the schema already documents all five parameters in detail (e.g., query 'Free-text match on name, category, tagline and features... right match first'; max_price 'Excludes quote-only tools'). The description's filter list merely paraphrases the schema, so it adds little beyond the structured definition — 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 names a specific verb and resource ('Search TopAlternativesTo's catalogue of software tools') and enumerates the filter dimensions. It also differentiates from siblings by naming get_alternatives and get_tool directly, so an agent can distinguish the browse/filter path from the replace-specific-tool or get-full-detail paths without opening any schema.

  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?

  An explicit 'WHEN TO USE' block gives concrete example queries ('project management tools under 15 dollars', 'CRMs with a free plan') and states exactly when to route elsewhere: 'Use get_alternatives when the user wants to replace a specific tool, and get_tool for full detail on one.' This is firm, unambiguous routing guidance.

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