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

Annotations already declare a safe read-only, idempotent, non-destructive operation. The description adds genuinely useful behavior beyond that: it validates multiple formats, reports line and column, and returns the complete error set rather than the first failure. It omits the 500,000-character input cap and any note on how results are structured.

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?

A single dense sentence, front-loaded with the action and target, then the error categories, then the key differentiator. The parenthetical file list is long but earns its place by naming supported inputs.

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 3-parameter, no-output-schema validation tool, the description conveys what it validates, what it catches, and that it aggregates errors with line/column. Return-value structure and the input size limit are the only meaningful omissions.

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%, with lang, content, and file_name all documented in the schema itself, so the baseline is 3. The description adds nothing about parameters — it never mentions the language option or the XML/JSON detection role of file_name.

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 (check) and resource (DayZ server config file), enumerates the exact file names it handles, and describes the defect class it targets. An agent can immediately distinguish this from siblings like explain_server_setting or analyze_server_log.

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?

Clear implied context: use it to validate a config file before the server chokes on it, and it explicitly notes finding all errors at once rather than failing fast. However, it never states when NOT to use it or names an alternative sibling for related tasks.

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