breakpoint_on_api_group

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

No annotations are present, so the description carries the full burden. It accurately states the core action ('Set breakpoints on all APIs in a category') but does not disclose behavioral traits such as whether it adds to existing breakpoints, overwrites them, or how it handles failures or partial successes. This is adequate but not rich.

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, front-loaded with the primary action and immediately followed by the benefit. Every word earns its place, with no filler or repetition of schema details.

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?

This is a simple one-parameter tool. The description covers the purpose and efficiency rationale, and the output schema presumably handles return-value documentation. It could mention the prerequisite of an active debugger session, but the tool name and sibling context make that reasonably implicit. Overall, it is complete enough for the tool's complexity.

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 a detailed enum description for 'group' listing specific APIs per category. The description adds no new parameter semantics beyond the schema, so the baseline score of 3 is appropriate.

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+resource structure: 'Set breakpoints on all APIs in a category at once.' This clearly states the tool's function and distinguishes it from single-breakpoint setters like windbg_set_breakpoint or breakpoint, making the tool's unique bulk capability evident.

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 phrase 'Saves many calls vs setting each manually' provides clear context for when to use this tool—when you need breakpoints on a whole API category. It implies an alternative (manual per-API setting) and explicitly highlights the efficiency benefit, though it does not mention exclusions like conditional or data breakpoints.

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