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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. Beyond that the description adds nothing: no indication of what the response body contains, whether it returns workspace-level or company-level configuration, or whether any query parameters change behavior.

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 single substantive sentence is duplicated verbatim ('GET /api/...' appears twice), which is pure waste, and the front-loaded content is a raw URL path rather than a human-readable statement of purpose.

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 read endpoint with two undocumented parameters, no output schema, and deep nesting hints, the description should at minimum say what configuration object is returned and what the query object can carry. Neither is present, leaving the agent to infer everything from the slug and a redirect to another tool.

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 0% for two opaque parameters ('query' as a free-form object and an empty 'params' object), so the description carries the burden and fails. The lone note that describe_operation provides native request schemas is a pointer, not documentation of what query keys or params this endpoint accepts.

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 only repeats the URL path 'GET /api/accounting/journal-close/account-number-format' twice, which restates the name and title rather than explaining in plain language what the tool returns (e.g. the configured journal-close account number format/mask). An agent learns nothing about the resource beyond guessing from the slug, and nothing distinguishes it from the ~40 other journal-close siblings.

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?

There is no when-to-use or when-not-to-use guidance, and no alternatives named among the many journal-close endpoints. The only steering is a pointer to describe_operation for native request schemas, which is a schema-retrieval hint rather than usage guidance.

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