Save the project as .sb3

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

No annotations are provided, so the description must disclose behavioral traits. It states that the tool writes a file and provides a default path, but it does not mention whether the file will overwrite an existing one, what happens on error, or whether it returns any status. This leaves important operational details undisclosed.

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 a single, well-structured sentence that front-loads the purpose and includes the output format and default path. There is no filler or redundant information.

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?

Given the simplicity of the tool (one optional parameter, no output schema), the description covers the essential behavior, output format, and default path. However, it omits details like overwrite behavior and error handling, which are not covered by annotations or schema, so it is slightly incomplete but not severely.

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 describes the 'path' parameter with a simple description, but the tool description adds the default value (./scratch-projects/<name>.sb3) and clarifies the file format. This adds meaning beyond the schema, which already has 100% coverage, so it goes above the baseline.

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 verb 'writes' and the resource '.sb3 file', and specifies the format's compatibility with Scratch 3 and TurboWarp. This distinguishes it from sibling tools like create_project or preview_project, making the purpose unambiguous.

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 when to use the tool (when you need to save/export the project as .sb3), and the context of sibling tools like create_project or preview_project makes the intended use clear. However, it does not explicitly state when not to use it or name alternatives, so it misses full guidance.

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