set_breakpoint

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

No annotations exist, so the description must disclose behavior. It only states 'Sets a breakpoint' without detailing side effects (e.g., whether it replaces existing breakpoints), required state (paused or running), or return value. This is insufficient for safe invocation.

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, concise sentence with no redundancy. While it omits necessary details, it is efficient for its length. It earns a high score for conciseness but not maximum due to missing information.

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 sibling tools (step_over, continue, etc.) and no output schema, the description lacks essential context about the debugging environment. It does not specify when the tool is applicable (e.g., while paused) or how it interacts with other debugger states.

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%, so baseline is 3. The description adds no new semantic information beyond the parameter names and descriptions. It does not clarify formatting conventions for file paths or valid line ranges.

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 clearly states the verb 'Sets' and the resource 'breakpoint' with specification of 'line and file'. It distinguishes from sibling tools like delete_breakpoint and list_breakpoints by indicating creation. However, it lacks additional context such as scope (e.g., current debugging session) which could improve clarity.

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 like continue or evaluate. There is no mention of prerequisites (e.g., active debugging session) or conditions for setting breakpoints.

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