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

The description discloses the legacy nature and OAuth 2.1 disabling, adding context beyond the minimal annotations. However, it does not describe side effects or what happens on failure.

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 front-loaded with the main purpose and well-structured with bullet points, though it could be slightly more concise.

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?

Covers legacy and usage guidance well, but lacks parameter explanations and output details. The output schema exists but is not referenced.

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 0% and the description does not explain 'service_name' or 'user_google_email' parameters, leaving the agent without guidance on their values or purpose.

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 'Manually initiate Google OAuth authentication flow' and differentiates from sibling tools focused on Drive operations, with specific use cases listed.

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?

Explicitly states when to use the tool (re-authentication, proactive login, retry) and when not to (automatic flow is preferred), with a clear recommendation to attempt other tools first.

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