debuggerSetVariableValue

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

No annotations exist, and the description does not disclose behavioral traits like side effects (e.g., does it modify the debugger state?), authorization needs, or what happens if the variable does not exist or is read-only.

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 very concise (one sentence), but it sacrifices completeness. While brevity is generally good, the tool lacks critical details that should be included.

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 tool's complexity (3 parameters, no output schema), the description is insufficient. It does not explain return behavior, constraints (e.g., variable must exist), or error conditions, leaving the agent with gaps in understanding.

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 descriptions for all three parameters. However, the description adds no additional meaning beyond the schema; it merely states the tool's purpose without elaborating on parameter semantics.

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 'Sets the value of a debugger variable' uses a specific verb ('Sets') and resource ('debugger variable'). This clearly distinguishes it from sibling tools like debuggerVariables (which lists variables) or debuggerStep (which steps through code).

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?

No guidance is provided on when to use this tool versus alternatives, such as whether it should be used only when the debugger is active or if there are prerequisites like attaching to a session.

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