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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the description's 'Limitations: read-only' adds nothing beyond structured data. It discloses nothing about authentication selection (api_token vs app_password vs access_token), error behavior for a missing ID, or response shape.

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 sentence is short and front-loaded with the action and endpoint. The trailing 'Limitations: read-only' clause is redundant with annotations rather than earning its place, but the overall text is lean.

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 six parameters and three mutually overlapping auth options, plus no output schema, the definition should at least hint at which credential to supply and what is returned; it does neither. It is minimally adequate for a simple read but leaves real gaps for an agent assembling the call.

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 83%, so the schema already documents the meaningful parameters (base_url, account_id, auth tokens) while timeoff_id itself carries no description. The description contributes no additional parameter meaning, which is the baseline 3 when the schema does the heavy lifting.

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 states a specific verb and resource ('Gets one time off request') and even names the endpoint GET /timeoffs/:timeoff_id, so an agent knows this is a single-record fetch. It does not explicitly distinguish itself from the sibling list_timeoffs or the other timeoff reads (get_timeoff_balance, get_timeoff_policy), so it falls short of 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?

There is no when-to-use or when-not-to-use guidance and no mention of the obvious alternative, list_timeoffs. The singular resource and the presence of a required timeoff_id only implicitly signal that this is for fetching one known request.

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