Send email draft

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

No annotations are provided, and the description only says 'Send an existing draft email.' It does not disclose side effects (draft is sent/removed), auth requirements, or failure behavior. For a mutating action this is a significant disclosure gap.

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?

A single, front-loaded sentence with no filler. It is very concise, though possibly too spare to carry behavioral context.

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 two-parameter tool with full schema coverage, the description plus schema gives an agent enough to invoke it with the required id. However, zero annotations and no output schema leave behavioral expectations (e.g., success/error, draft consumption) undocumented.

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 id and account are already documented. The description adds marginal semantic value by specifying the draft must already exist, but it does not explain how id relates to draft lifecycle or the account parameter.

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 action ('Send') on a specific resource ('existing draft email'), which clearly separates it from google_gmail_send (new email) and draft management siblings. The word 'existing' signals it operates on drafts already created.

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?

No guidance on when to choose this over google_gmail_send or how drafts are created. No exclusions or alternative routing are provided; usage must be inferred from the name and title.

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