create_system_tunable

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

Annotations already indicate readOnlyHint=false and destructiveHint=false, so the agent knows this is a mutating but non-destructive operation. The description adds no behavioral context beyond 'create', such as persistence across reboots, duplicate handling, or side effects of apply_immediately. This leaves important behavioral traits undisclosed.

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 a single, front-loaded sentence with no filler. It efficiently conveys the core purpose and includes a useful parenthetical clarification, all in nine words.

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 input schema and output schema, the description covers basic purpose but omits critical context like handling existing tunables, prerequisites, or whether apply_immediately has side effects. The sibling tools imply a lifecycle, but the description alone is not fully complete for safe and correct use.

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%, so the schema already documents all four parameters (descr, value, tunable, apply_immediately). The description adds minimal extra meaning beyond the 'sysctl value' clarification, which does not substantially enhance understanding of individual parameters.

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 uses a specific verb ('Create') and resource ('system tunable') with a clarifying parenthetical ('sysctl value'). It clearly distinguishes from sibling tools like search_system_tunables, update_system_tunable, and delete_system_tunable.

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?

The description does not explicitly state when to use this tool versus alternatives, such as using update_system_tunable for existing tunables or search_system_tunables for lookup. Usage is implied by the tool name and sibling context, but no direct guidance is provided.

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