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

It discloses the consequences of both approaches (permanent non-expiring vs. session-only) and aligns with the idempotentHint annotation. No destructive or rate-limit behavior mentioned, but it's transparent about the token's lifespan and purpose.

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 wordy and mixes background context ('MCP.AI for IDE agents') with instructions. The structure is not as clean as it could be, but it remains understandable.

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 absence of an output schema, the description sufficiently explains inputs and expected outcomes (link or authentication). It does not detail edge cases or errors, but the core context is covered.

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 'token' parameter is clearly explained in the description: it is a JWT for direct authentication, or omitting it yields a link. This adds meaning beyond the schema, which has no description coverage, and compensates adequately.

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 implies authentication for IDE agents, mentioning logging in and obtaining a token. However, it is phrased more as instructions than a direct purpose statement, which slightly reduces clarity.

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 two usage methods (providing a token or getting a link) and explains when to use each (permanent config vs. session-only). It does not explicitly compare with sibling tools, but the guidance is useful and sufficient for the tool itself.

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