Microsoft 365 MCP Server

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

No annotations are provided, so the description carries full burden. It states the action but lacks critical behavioral details: whether this requires authentication, what happens to active sessions (e.g., all devices or just current), if it's reversible, or any side effects like cached data deletion. For a security-sensitive operation with zero annotation coverage, this is insufficient.

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 a single, efficient sentence with zero wasted words. It's front-loaded with the core action ('Log out') and immediately specifies the context ('from Microsoft account'). Every word earns its place, making it easy to parse quickly.

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 the complexity of a logout operation (security implications, session management) with no annotations and no output schema, the description is incomplete. It doesn't explain what happens after logout (e.g., session invalidation, return values, or error conditions), leaving significant gaps for an agent to understand the tool's full behavior.

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 tool has 0 parameters with 100% schema description coverage, so no parameter documentation is needed. The description appropriately doesn't discuss parameters, focusing only on the action. This meets the baseline for parameterless tools, though it doesn't add value beyond the schema (which is fine here).

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 action ('Log out') and target resource ('from Microsoft account'), making the purpose immediately understandable. It distinguishes from siblings like 'login' and 'remove-account' by focusing on session termination rather than authentication initiation or account deletion. However, it doesn't specify whether this affects all sessions or just the current one, leaving some ambiguity.

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 implies usage when ending a Microsoft session, but provides no explicit guidance on when to use this versus alternatives like 'remove-account' (which deletes an account entirely) or 'verify-login' (which checks authentication status). The context is clear from the verb 'log out,' but no specific conditions or exclusions are mentioned.

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