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

Annotations already declare readOnlyHint=true and openWorldHint=false, and the description adds meaningful behavioral context beyond that: it uses a hybrid LanguageTool + Grok pipeline, produces rule citations, enforces style guides and dialects, and reports per-issue severity. It does not fully describe output format or the implications of sending text to an LLM, but the added detail is substantial.

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?

The description is a single dense sentence that packs substantial information without rambling. It loses some polish due to redundancy: 'Grammar Checker — ... grammar checker' repeats the core noun, but overall it is efficient and front-loaded with the tool's main function.

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 present, the description partially compensates by mentioning rule citations, style-guide awareness, dialect enforcement, and per-issue severity, which hint at the return shape. However, it does not explicitly describe the output structure, result format, or how to distinguish single-text use from the batch sibling, leaving moderate gaps for an agent.

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 description coverage is 100%, and the schema already documents all five parameters, their enums, defaults, and descriptions. The description's mention of style guides, dialects, and severity aligns with parameters like style and dialect, but it does not add meaningful parameter-level semantics beyond what the schema already provides.

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?

The description clearly identifies the tool as a grammar checker with specific capabilities: hybrid LanguageTool + Grok processing, rule citations, style-guide enforcement, dialect handling, and per-issue severity. It is not a vague restatement, but it does not explicitly distinguish itself from the sibling analyze_grammar_check_batch tool, preventing a 5.

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?

The description implies usage through its feature list but provides no explicit guidance on when to choose this tool over alternatives. In particular, it does not mention the batch sibling or any exclusion criteria, leaving the agent to infer the single-text scope from the tool name and schema.

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