Move Drive file to folder

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

With no annotations, the description carries the full behavioral burden, and it does disclose a genuinely non-obvious Drive trait: omitting removeParentFolderId adds a second parent rather than relocating the file. It stops short of 5 because it says nothing about required edit permissions on source/destination or what happens on failure.

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?

Two tight sentences with the core action front-loaded and the optional-parameter nuance immediately after. No filler, no repetition of the title.

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 mutation tool with no annotations and no output schema, the description covers the essential semantics an agent needs to pick the right mode. It omits permission/ownership requirements and the shape of the result, which keeps it from being fully complete.

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%, so the baseline is 3, but the description goes beyond the schema's terse 'Current folder ID to remove the file from (optional)' by explaining the downstream effect of supplying vs omitting the parameter. That is real added meaning.

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?

States a specific verb+resource ('Move a file into a folder'), which is naturally distinguishable from adjacent siblings like google_drive_copy or google_drive_update. It never names an alternative sibling explicitly, so it stops short of the 5 tier, but an agent can identify the operation without opening the schema.

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?

Gives clear conditional guidance for the two modes: supply removeParentFolderId for a true move, omit it to add the file to an additional folder. This is actionable context rather than inference. However, it offers no tool-level alternatives (e.g. why not copy+delete) and no prerequisites.

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