add_note

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

With no annotations, the description carries the full burden of behavioral disclosure. It reveals the append semantics (preserving existing notes) and the return type (confirmation string), but does not cover potential failure modes, file prerequisites, or permission needs. This is adequate but not exhaustive.

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 and front-loaded with the primary purpose. The Args and Returns sections are clear and every sentence contributes necessary information without redundancy.

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 an output schema. The description covers purpose, parameter, and return value. It could mention whether the file must exist or if it is created, but this lack is minor given the tool's straightforward nature and the presence of an output schema.

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 provides only the parameter name and type, with no description. The description adds full semantics by stating 'message (str): The note content to be added,' which clearly explains the parameter's meaning and role. This fully compensates for the zero schema description coverage.

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 states a specific action ('Append a new note') on a specific resource ('the sticky note file'). This clearly distinguishes it from siblings like read_notes, delete_notes, and save_to_new_file, as it modifies an existing file rather than reading, deleting, or saving to a new file.

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 implies usage through the action 'Append a new note' but does not explicitly mention when to use this tool versus its siblings. There is no guidance on alternatives or when not to use it, leaving the context to be inferred.

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