agent-tool

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

With no annotations provided, the description carries the full disclosure burden. It successfully documents encoding preservation behavior and automatic parent directory creation—critical behavioral traits not inferable from the schema. It does not, however, disclose error handling behavior or explicitly flag the destructive nature of overwrites beyond the verb itself.

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?

Three sentences total, with the primary purpose front-loaded. Every sentence delivers unique value: purpose declaration, encoding behavior, and directory handling. No redundant or filler text present.

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?

Appropriately complete for a two-parameter tool without output schema. Covers the essential 'write' operation specifics (encoding, path handling) that an agent needs. Minor gap in not describing return behavior or explicitly contrasting with the 'edit' sibling.

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 coverage is 100%, establishing a baseline of 3. The description adds meaningful semantic context beyond the schema: 'Encoding-aware' informs how the 'content' parameter will be processed, and 'Auto-creates parent directories' clarifies behavior regarding the 'file_path' parameter's directory hierarchy.

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 opens with a specific verb-object pair ('Creates or overwrites a file') and explicitly states the resource being acted upon. The 'overwrites' qualifier clearly distinguishes this from sibling tools like 'read', 'edit' (partial modification), and 'copy'.

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 'Creates or overwrites' (suggesting full replacement scenarios), but lacks explicit guidance on when to prefer this over the sibling 'edit' tool for partial modifications or when to use 'copy' instead.

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