no_connect_pin

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

The description explicitly states 'Idempotent: calling again for a pin that already has one is a no-op', but the annotations set idempotentHint to false. This is a direct contradiction. Additionally, no other behavioral traits such as file modification or error cases are disclosed beyond the basic annotations.

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 compact with a clear one-line purpose, an idempotency note, and a structured Args list. No redundant or filler content. It is well-front-loaded and each 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?

For a simple tool with an output schema, the description covers the operation, all parameters, and idempotency. However, it lacks usage guidance and contradicts its idempotency annotation, which slightly reduces completeness. Overall, it is mostly complete for its 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?

The input schema has no descriptions for any parameter (0% coverage), so the description fully compensates. It provides examples for reference ('U2'), pin_name formats ('NC' or '3'), and clarifies schematic_path as optional with a default. Every parameter is meaningfully explained.

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 'Place a no-connect flag on a component pin', using a specific verb and resource. It differentiates from siblings like remove_no_connect by indicating the action of placing. The arg examples further clarify the intended use.

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 provide guidance on when to use this tool versus alternatives such as remove_no_connect or connect_pins. It only describes the operation and idempotency, with no explicit context or exclusions. Given the many sibling tools, this lack of distinction is a significant gap.

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