unflag_emails

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

No annotations are provided, putting the full burden on the description. It only states that flags are removed and notes UIDs are permanent. It lacks details on side effects (e.g., whether other metadata changes), error handling for invalid UIDs, permissions required, or if the operation is reversible. Essential behavioral context is missing.

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 consists of two short, direct sentences. The first states the action, the second adds a key detail about UIDs. No unnecessary words. It is efficiently structured and easy to parse.

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 tool's simplicity (2 params, no nested objects, no output schema), the description is mostly adequate. However, it lacks completeness in terms of behavioral expectations and error scenarios. For instance, it does not clarify if the operation is idempotent or what happens if a UID doesn't exist. The lack of annotations further reduces completeness.

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%, with both parameters described sufficiently. The description adds the fact that UIDs are 'permanent identifiers', which is helpful context beyond the schema's 'Array of UIDs to unflag'. However, this is a minor addition, and the baseline of 3 is appropriate since the schema already explains the parameters well.

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 action: 'Remove flag/star from emails using UIDs.' It identifies the resource (emails' flags/stars) and the method (using UIDs). This distinguishes it from sibling tools like 'flag_emails' which adds flags, and other tools with different actions.

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 provides no guidance on when to use this tool versus alternatives. It does not mention prerequisites, when not to use it, or compare with other tools like 'mark_as_read' or 'delete_emails'. The agent must infer usage from the name alone.

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