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

The annotations already declare destructiveHint=true, openWorldHint=true, and idempotentHint=false, so the safety profile is covered. The description adds genuinely non-obvious behavior the annotations cannot convey: transitioning to "open" fans out into ATS job creation and candidate auto-sync when integrations are enabled. It stops short of describing the consequences of the other transitions (e.g., what happens to candidates or the ATS record on close/cancel).

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?

Two sentences, zero padding: the core action with its enum first, then the side-effect caveat. Front-loaded and appropriately sized for a two-parameter mutation.

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 destructive, non-idempotent, open-world mutation with no output schema, the description covers purpose, valid values, and the "open" side-effect path but omits what closing or cancelling actually does — whether candidates are rejected/archived, whether the operation is revertible, or what permissions are required. Adequate to call correctly, not complete enough to predict the result of a destructive change.

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 an enum on status, so the baseline is 3. The description earns one more by attaching meaning to a specific enum value — "open" is the transition with external side-effects — which the schema does not express.

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 gives a specific verb (change) and resource (job position status) and enumerates the four allowed target states, which cleanly separates it from siblings like update_job_description or set_job_closing_date. An agent can tell exactly what this mutates without opening the schema.

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?

Usage is only implied: the status enum hints that closing or pausing a role goes through this tool rather than set_job_closing_date or update_job_description, but no alternative is named and no when-not-to-use condition is stated. It also doesn't say whether prerequisites (e.g., an existing pipeline or integration) must be met before calling.

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