authenticate

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

With no annotations, the description carries the full burden, and it does disclose useful behavior: an interactive OAuth device-code flow where the user receives a URL and code to finish in a browser. However, it omits whether the call blocks waiting for the user, whether/how the resulting token is stored (relevant given the onenote_save_access_token sibling), and any scope or expiry details.

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 core action is front-loaded in the first sentence, followed by a brief mechanism explanation and a compact return-format note. The section headers and near-empty example add minor padding, but the content is well-organized and short.

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 zero-parameter authentication trigger, the description covers purpose, mechanism, user interaction, and outcome, and an output schema already exists so return values need not be detailed. It is largely complete, with only the token-storage and blocking behavior left implicit.

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 takes zero parameters, so there are no parameter semantics to explain; the baseline for a 0-param tool applies. Nothing in the description is needed to disambiguate inputs since the schema is empty.

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?

States a specific verb and resource: 'Start the Microsoft authentication flow using device code,' and clarifies the mechanism (OAuth 2.0 device code flow for Microsoft Graph API). It does not, however, distinguish itself from the sibling onenote_save_access_token, leaving the boundary between auth initiation and token persistence unstated.

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?

Usage is implied by the name and the flow description, and it conveys that the user will need a browser to complete it. But there is no explicit statement of when to call this versus alternatives (e.g., onenote_save_access_token), nor any prerequisites or when-not guidance.

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