create_symbol_library

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

Annotations offer minimal safety hints (all false), so the description carries some responsibility. It adds context about the optional path and default behavior, but does not disclose what happens if the file already exists, whether it overwrites, or any error conditions. This is moderate beyond the schema but lacks depth.

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 exceptionally concise: two short sentences deliver the purpose and the parameter semantics. It front-loads the key action and avoids unnecessary detail, making it easy to parse quickly.

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?

The tool is simple with one parameter, and the description covers the core purpose and parameter meaning. However, it omits details about the configured default path and behaviors for existing files. The output schema likely covers return values, so the description is largely complete but leaves minor edge cases unspecified.

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 schema description coverage is 0%, so the description must compensate. It does add meaning by stating the path is for a .kicad_sym file and that it is optional, but this directly contradicts the schema which marks symbol_lib_path as required. This conflicting guidance undermines semantic clarity and could mislead an agent.

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 creates a valid empty KiCad 9 symbol library, specifying both the action (create) and the resource (library). This distinguishes it from sibling tools like create_schematic or add_lib_symbol, which have different purposes.

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 provides no guidance on when to use this tool versus alternatives such as create_sym_lib_table or add_lib_symbol. It does not mention prerequisites, typical workflows, or situations where another tool would be more appropriate, leaving the agent to infer usage context.

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