chap.control.set_mode_ceiling

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

The description discloses one meaningful behavior: tasks above the ceiling are refused. However, with no annotations provided, it does not surface other important behavioral traits such as whether existing tasks are affected, whether step-up authentication may be required, or whether the change is audited/reversible.

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 description is two short sentences with no filler. The core action is front-loaded, and the behavioral consequence is stated immediately after in a compact way.

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?

Given the rich parameter schema that already documents existing-task behavior and step-up authentication, the description plus schema is largely adequate for invoking the tool correctly. It is slightly incomplete at tool level because it does not mention the privileged/authentication caveat or explicitly define the mode hierarchy, but those gaps are partially covered by the schema.

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 100%, and each parameter already has a meaningful description. The tool description adds no parameter-level detail beyond what the schema provides, so the baseline score of 3 applies.

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 ('Set'), a specific resource ('the highest operating mode tasks in this workspace may request'), and a concrete consequence ('A task above the ceiling is refused'). This clearly differentiates it from sibling control and workspace tools.

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: an agent can infer this tool is used to raise or lower the allowed operating-mode ceiling for a workspace. However, the description does not mention when to prefer this over alternatives such as workspace.set_profiles or control.cancel/supersede, nor does it state any exclusions.

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