watchpin_set_action_breakpoint

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

Discloses key behavioral details: 'The target briefly stops, the WatchPin pulses, then execution resumes' and notes the return is a confirmation. No annotations exist, so description carries full burden and meets it well.

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?

Concise and front-loaded: purpose sentence, use case sentence, behavior sentence, then parameter list. No wasted words; every sentence adds value.

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?

Covers all necessary aspects: purpose, usage context, behavior, parameters, and return. The tool is simple, and the description is complete given the output schema exists.

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 0%, but the description adds clear explanations for all parameters: address (symbol or address), pin (WatchPin number), and pulse_width_us (with default). This fully compensates for the schema gap.

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 tool sets an action breakpoint that pulses a WatchPin when hit, distinguishing it from other breakpoint and watchpin tools by combining both functions.

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?

Provides explicit use case: 'correlating software events with external hardware (e.g., oscilloscope)' but does not mention alternatives or when not to use.

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