case-studies

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds the shape of the returned content, but says nothing about auth requirements, missing-id behavior, or pagination (none expected). Adequate but not rich beyond the annotations.

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

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

One sentence, front-loaded with the action and resource, then the return contents, then the required input source. No wasted words.

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

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

No output schema exists, and the description compensates by naming the content sections a caller receives, which is enough for a simple read tool. It stops short of covering edge cases like an unknown id, but nothing an agent needs to invoke it correctly is missing.

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

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

Schema coverage is 100% and the single parameter is documented in the schema. The description largely restates that the argument is an id/slug/url from search_cases, adding little beyond the schema baseline.

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

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

Specific verb (get) and resource (one case study), with the returned content enumerated (article text, challenge, solution, conclusion). It also implicitly distinguishes itself from search_cases by positioning itself as the follow-up fetch for one item.

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

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

Explicitly states the input must come from search_cases ('Pass the id, slug or url returned by search_cases'), which establishes the when-to-use context. No explicit when-not guidance, but for a simple single-item fetch the routing is clear.

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

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds real behavioral detail beyond that: the returned structure (id, parentId, title) and the fact that the list is flat with parentId always null, which prevents an agent from expecting hierarchy.

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

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

Three short sentences, front-loaded with purpose, then return shape, then the cross-tool handoff. Every sentence carries distinct information with no repetition of the schema or annotations.

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

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

With no output schema and no parameters, the description correctly compensates by describing the return payload (id, parentId, title) and the flat-list quirk. Nothing needed to call this correctly is missing.

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

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

This tool takes zero parameters, so the baseline is 4. The only parameter reference is to the sibling's tagIds field, which is helpful cross-tool guidance but not a parameter of this tool.

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

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

Specific verb+resource: 'Get all available tags that can be used to filter case studies.' It also names the sibling tool (search_cases) that consumes the output, so an agent can distinguish it from get_case and search_cases without opening schemas.

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

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

Gives clear context for use ('tags that can be used to filter case studies') and routes the agent forward: 'Use the tag ids in the search_cases tagIds parameter.' No explicit when-not condition or alternative tool for listing filters, but the usage path is unambiguous.

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

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

Annotations only cover safety (readOnlyHint, openWorldHint), so the description carries the behavioral burden and does so richly: word splitting, stop-word removal, whole-word matching across title/description/tag names, British/American and plural folding, staged result ranking with allTermsTotal, AND combination of text+tags, and tagMatch semantics. It even states the return shape ('short records'), which is essential 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.

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

Front-loaded with the core action and overall tight, with no filler sentences. It is a dense single paragraph with several long clauses, so it is slightly harder to scan than an ideal definition, but nearly every clause conveys behavior an agent cannot get from the structured fields.

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

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

For a 5-parameter search tool with no output schema, the description covers filtering, combination logic, ranking, pagination (via schema), and the return shape. It also links forward to the exact sibling needed to expand a result, leaving nothing an agent requires before calling it.

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

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

Schema coverage is 100%, so the baseline is 3 and the schema already documents page/pageSize/tagMatch defaults. The description adds real meaning beyond that: the ranking semantics of 'query', the empty-string browse behavior, that text and tags combine with AND, and how multiple tags interact via tagMatch.

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

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

States a specific verb and resource ('Search DataArt case studies') plus the two filter dimensions (text query and/or tag IDs). It is immediately distinguishable from siblings get_case (fetch full text) and get_case_tags (discover tag IDs), which the description names explicitly.

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

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

Gives concrete when-to-use routing: 'Use get_case_tags to discover available tag IDs before filtering' and 'use get_case with the id, slug or url of a result to get its full text.' It also gives a when-to-use-this-way case ('Pass an empty query to browse all cases'), so an agent needs no inference to pick the right tool.

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