create_sym_lib_table

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

The description discloses a key behavioral detail beyond the annotations: 'Overwrites existing sym-lib-table if present.' This adds specific context to the destructiveHint=true annotation, clarifying exactly what gets overwritten. This goes beyond the bare annotation and is valuable for the agent.

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 appropriately short and front-loaded, with the main action in the first sentence. The entry requirement and overwrite note are important, but the 'Args' block largely restates the schema, adding slight redundancy. Overall, each sentence contributes value, and the structure is clean.

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 two-parameter file creation tool, the description covers the essential information: what it does, what the arguments are, the required entry structure, and the overwrite behavior. The output schema handles return details, and annotations cover the destructive nature. It doesn't mention directory existence or edge cases, but it is sufficiently complete for this scope.

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%, so the description must compensate. It does add a brief explanation for 'directory' (Directory to write sym-lib-table in) and repeats that entries need 'name' and 'uri' keys, but this largely duplicates the schema's required fields and type definitions. It doesn't provide deeper semantics like path constraints or URI formats, so the added value is minimal.

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's purpose: 'Create a sym-lib-table file in the given directory.' This is a specific verb and resource, and it distinguishes this tool from siblings like create_schematic or create_symbol_library by naming the exact file type. The overwrite note further clarifies scope.

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 explicit when-to-use guidance or alternatives. It does explain the required entry keys and directory argument, which is a form of usage guidance, but it doesn't say when to choose this tool over similar creation tools. No exclusions or alternative references are given.

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