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

The description mentions permanent vs session-only but does not explicitly state side effects like writing to config or storing tokens. Annotations indicate readOnlyHint=false, implying potential modification, but the description does not fully disclose this. No contradiction, but more transparency needed.

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 somewhat rambling with user instructions (e.g., 'log in in the browser, copy the access token'), but it remains relatively concise and structured. It could be more streamlined but is not overly verbose.

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 schema and absence of output schema, the description covers both usage modes and the parameter behavior. It sufficiently explains how to call the tool (with token or without) and what to expect, making it complete for a simple auth tool.

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 has one optional parameter 'token', and the description explains that providing it enables session login, while omitting it returns a link. This adds meaningful context beyond the schema's bare type definition.

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 indicates the tool is for authentication, explaining two methods: obtaining a link or providing a token. It distinguishes from sibling tools like connect, marketplace, etc., by focusing on auth.

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 guidance on when to use it: either to get a link (no args) or to authenticate with a token. It also contrasts with config-based permanent auth vs session-only, which helps the agent choose.

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