Hardened Google Workspace MCP

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 explaining the tool's relationship to the automatic authentication system, clarifying it's for manual initiation only. It doesn't cover rate limits, error responses, or what the OAuth flow actually entails, but provides sufficient context for when to use this versus relying on automatic handling.

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 perfectly structured with a clear purpose statement upfront, followed by important warnings and usage scenarios. Every sentence serves a distinct purpose - establishing the tool's function, warning against misuse, providing specific use cases, and offering the preferred alternative. No wasted words.

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 2 parameters, 0% schema description coverage, no annotations, but with an output schema, the description provides excellent context about when and why to use this tool. It doesn't explain what the authentication flow returns (covered by output schema) or parameter details, but gives the agent exactly what it needs to decide when to invoke this versus relying on automatic authentication.

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 description coverage is 0%, but the description provides no information about the two parameters (service_name, user_google_email). While the baseline is 3 given the schema handles parameter definitions, the description doesn't compensate for the lack of schema descriptions by explaining what these parameters mean or how they affect authentication.

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 explicitly states the tool's purpose as 'Manually initiate Google OAuth authentication flow' - a specific verb ('initiate') and resource ('Google OAuth authentication flow'). It clearly distinguishes this authentication tool from all the sibling Google Workspace content manipulation tools listed, making its unique role obvious.

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 exceptional usage guidance with explicit 'when-not' instructions ('should typically NOT be called directly'), clear alternatives ('simply try calling the Google Workspace tool you need'), and three specific scenarios when it should be used (re-authentication, proactive authentication, retry after failure). This gives the agent comprehensive decision-making context.

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