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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds real value by stating 'opens nothing by itself' and by describing the return content (screens, buttons, fields), plus the note that JazzHR has a REST API but no official MCP server. It does not say what happens if the user's browser session is not authenticated or what the guide looks like when the account lacks permissions.

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 purpose is front-loaded, but the second sentence is a semicolon-chained run-on, and the trailing API-key/version note ('checked 20 Oct 2026') is tangential to invoking this tool. Trimming to the guide-plus-browser workflow would make it sharper.

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 zero-parameter instructional tool with no output schema, the description covers the essential loop: fetch the how-to, then drive the browser tools. What is missing is how the tool knows which candidates and target status are involved, and any preconditions such as an authenticated JazzHR browser session.

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?

With zero parameters the schema baseline would be 4, but a tool whose name promises a bulk mutation taking no input is a genuine source of confusion that the description never addresses — it does not explain that candidate and status selection happen conversationally or later in the browser flow. The description leaves the agent to infer why nothing is parameterized.

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?

Names a specific verb and resource (bulk change candidate status) and immediately clarifies that it returns step-by-step JazzHR instructions rather than performing the change itself, which resolves the ambiguity created by the action-oriented name. It stops short of distinguishing itself from close siblings like jazzhr_move_candidate_to_a_workflow_stage, so an agent must infer the boundary between a status change and a stage move.

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 an explicit two-step workflow: call this tool to get the screens/buttons/fields, then execute via the cotlet_browser_* tools in the user's JazzHR Cloud Browser. That is genuinely actionable routing. It offers no when-not guidance or comparison against the direct JazzHR sibling tools that also touch candidates.

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