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

The description explains behavioral details beyond the annotations: the login happens in the browser, the config-header path is permanent/non-expiring, and pasting a token is session-only. It does not contradict annotations (idempotentHint is reasonable for login attempts), though it omits error/expiry behavior.

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 appropriately sized for a one-parameter auth tool and front-loads the browser-login concept. It is slightly run-on with multiple instructions in one flow, but every sentence conveys necessary information.

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 simple auth tool with no output schema, the description covers the key usage paths (config header, token paste, no args), the return behavior (get the link), and the permanent-vs-session distinction. It does not detail failure cases or what the successful token response looks like, but the constraints are modest.

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 schema only shows an optional 'token' string with no description (0% coverage), so the description carries the full burden. It explicitly says the token is a JWT pasted by the user, that it is optional, and that omitting it returns the login link.

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 identifies the tool as an authentication flow: the user logs in in the browser, copies an access token, and the tool accepts it or returns a login link. It distinguishes this from general connection/configuration actions, though it does not explicitly contrast with the sibling 'connect' tool.

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?

It gives explicit instructions for two modes: permanent configuration via an Authorization header, and session-only login by passing a token. It also states exactly when to call with no args (to get the link) and when to call with a token (after the user pastes it).

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