Set the default Google account

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

No annotations are provided, so the description carries the full burden of disclosing behavior. It only restates the title in slightly different words and does not mention side effects, persistence, authentication requirements, or error handling for invalid names.

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, clear sentence with no wasted words. It is front-loaded and efficient, though it could have included useful context without becoming verbose.

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 one-parameter setter with no output schema, the description is thin. It does not mention that the account must already be added via google_account_add, whether the setting persists, or how it interacts with google_account_status. This leaves the agent under-informed for a complete invocation.

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 input schema fully documents the single parameter 'name' with the description 'Account nickname to use as default,' giving 100% schema coverage. The tool description adds no additional semantic value beyond what the schema already provides, so it remains at the baseline of 3.

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 the specific verb 'Set' and clearly identifies the resource as 'which account is used when no account is specified.' This distinguishes it from sibling account management tools like google_account_add, google_account_list, google_account_remove, and google_account_status.

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 the tool is for establishing a default account when no account is specified, but it does not explicitly state when to use this versus sibling tools or mention any prerequisites (e.g., account must already exist). No alternatives or exclusions are noted.

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