Save a GDevelop project

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

The description reveals that it writes to a file (the JSON file) and requires an open in-memory project, adding context beyond the readOnlyHint=false annotation. However, it does not disclose overwrite behavior or error conditions, so it adds only moderate insight.

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 concise sentence that front-loads the core action. Every word adds value, with no 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?

For a simple save operation with one parameter, this is minimally adequate. It lacks details on return values, error handling, or whether the existing file is overwritten, but it does specify the precondition (open project) and destination (JSON file).

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 does not mention the projectId parameter or explain how it relates to the operation. The parameter is self-evident from the name, but the description provides no additional guidance.

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 a specific verb ('serialize') and resource ('open in-memory project') with a clear destination ('back to its JSON file'). This distinguishes it from siblings like create_project, update_project, and export_project.

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?

It provides clear context: the tool saves an already-open in-memory project to its original JSON file, implying you should use it after opening or modifying a project. It does not explicitly mention alternatives like export_project, but the context is reasonably clear.

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