complete_sign_in

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

With no annotations, the description carries the behavioral burden. It discloses that the action is stateful, persists cookies in a local browser profile, and closes the login window. It does not mention reversibility or permission needs, but the main side effects are stated.

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 trigger condition front-loaded and no filler. Every clause adds useful behavioral or contextual information.

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?

The description explains when and what happens, but it omits the meaning of the only required parameter and any prerequisite about an active sign-in flow/window. This is a critical gap for correct 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 contains a required 'name' property with 0% documentation coverage, and the description never explains what 'name' means or how to determine its value. The agent cannot confidently fill this sole required 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?

The description states a specific trigger condition ('after the user says they finished logging in') and concrete outcomes ('saves the session ... and closes the login window'). This clearly distinguishes complete_sign_in from siblings like sign_in (starting login) and revoke (ending sessions).

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 explicitly says when to call the tool: after the user announces they are done logging in. It does not explicitly name alternatives or exclusions, but the timing and flow relative to sign_in are clear enough.

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