Start the Google login

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

The description adds substantial behavioral context beyond the annotations: it does not open the browser itself, uses a one-shot listener on 127.0.0.1, exchanges the code locally, never passes it through chat, and has a 10-minute attempt lifetime. These details are not present in the annotations and provide meaningful operational guidance.

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 dense but every sentence earns its place: it covers user interaction, browser constraints, security, timeout, and next step without repetition or filler. The most important user-facing instruction is front-loaded.

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 tool with no parameters and no output schema, the description is fully complete. It explains the returned authorizeUrl, how to present it, what will happen afterward, and which sibling tool to call next.

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?

There are zero parameters, so the schema carries no burden and the description correctly avoids inventing parameter details. The baseline for a 0-parameter tool is 4; the description also reinforces that no configuration files or restart are needed.

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 opens with 'First step of connecting from the chat' and names a specific resource and action: start the Google login and return an authorizeUrl. It is clearly distinguished from siblings like finish_login and auth_status by positioning itself as the initial step.

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 explicitly states when to use it: as the first step of connecting, without editing config files or restarting the client. It also gives direct instructions to show the authorizeUrl to the user, ask them to open it in the browser, and call finish_login after the success page appears.

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