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

Annotation says idempotentHint=true and destructiveHint=false. The description adds context about non-expiring vs session-only login, and explains the token flow. It does not contradict annotations and gives useful behavioral details beyond what annotations provide.

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?

One dense sentence delivers all necessary information. It is slightly convoluted with the opening 'MCP.AI for IDE agents' but every clause adds value and it is not redundant.

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?

Covers the two authentication methods, the token parameter, and the link-generating behavior. Since there is no output schema, the description could clarify what the tool returns, but for a simple auth flow the usage is sufficiently complete.

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?

Schema has zero description coverage, but the description explains the 'token' parameter: what it is (JWT from browser) and that it's optional (omit to get link). It gives an example call, adding meaning beyond the bare schema.

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 tool's purpose: authenticating to the MCP.AI server for IDE agents. It describes the browser login flow and token submission, and it is distinct from siblings like 'connect' by explicitly focusing on token-based authentication and session/permanent options.

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?

Provides explicit usage guidance: recommends adding the token to the server config for a permanent connection, or pasting it for session-only login. Also explains two invocation modes (with/without token). Does not mention alternative sibling tools, but the instructions are clear and actionable.

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