Google Workspace MCP VE

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

With no annotations provided, the description carries full burden and does well by disclosing this is a legacy tool that's disabled when OAuth 2.1 is enabled, explaining the automatic authentication system context, and describing specific use cases. It doesn't mention rate limits, error handling, or what happens after authentication completes, leaving some behavioral aspects unclear.

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 well-structured with a clear opening statement, important NOTE section, and bulleted list of use cases. Every sentence serves a purpose - no wasted words. The information is front-loaded with the most important details first.

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?

Given this is an authentication tool with no annotations but with an output schema (which handles return values), the description provides good context about when and why to use it. It explains the tool's relationship to the broader authentication system and sibling tools. However, it doesn't address what the tool actually returns or what happens after authentication succeeds.

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?

With 0% schema description coverage for 2 parameters, the description provides no information about what 'service_name' or 'user_google_email' mean, their format, or valid values. The description doesn't compensate for the schema's lack of parameter documentation, so it meets the baseline expectation but doesn't add value beyond what's already missing.

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 the specific action ('manually initiate Google OAuth authentication flow') and distinguishes it from sibling tools by explaining it's a legacy authentication mechanism. It explicitly differentiates from automatic authentication flows handled by other Google Workspace tools.

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 provides explicit guidance on when to use this tool (three specific scenarios listed) and when not to use it ('in most cases, simply try calling the Google Workspace tool you need'). It clearly distinguishes this from the normal authentication flow and provides clear alternatives.

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