justhandled_filename_portability_preflight

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

With no annotations provided, the description must carry behavioral disclosure. It discloses that the tool incurs a cost of $0.05 USDC on Base mainnet, which is a meaningful behavioral trait. However, it does not state whether the operation is read-only, what the return format is, or any error/side-effect behavior. The cost disclosure is helpful but partial.

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 two sentences, front-loaded with the core functionality and followed by cost information. Every word earns its place, with no redundancy or filler.

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?

There is no output schema and no description of return values. While the function likely returns a list of flags, the description does not specify this. It also does not mention any prerequisites, required context, or behavior for edge cases like empty paths. The cost detail is useful, but the lack of output semantics and parameter details leaves the description incomplete for an agent.

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%, and the description adds no information about the parameters. It does not explain how 'paths' is used or the role of 'max_path_length'. The parameter names are self-explanatory to a human, but the description fails to compensate for the lack of schema descriptions, leaving the agent with no added semantic context.

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 uses the specific verb 'Flag' and clearly names the resource (filename portability). It enumerates the exact categories of issues it detects (reserved names, invalid characters, trailing dots, case collisions, Unicode collisions, long paths), which goes beyond a generic purpose and distinguishes it from the other preflight tools in the sibling list.

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 use when needing to check filenames for portability issues but gives no explicit when-to-use vs alternatives. It does not name any sibling tools or state exclusions. The clear list of checks provides context but no direct guidance on selecting this tool over others.

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