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

The description adds meaningful behavior beyond annotations: it explains that a config header yields a permanent, non-expiring connection while passing a token gives session-only access. It also indicates that calling with no arguments returns a link. Annotations already note idempotent and non-destructive, but the description provides useful persistence context.

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 a single run-on paragraph, starting with a slightly informal 'MCP.AI for IDE agents (Cursor, etc.):' and mixing setup instructions with invocation examples. It contains useful details but would benefit from clearer structure or bullet points; it is not as concise as it could be.

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 tool has no output schema and only sparse annotations, the description carries a heavy burden. It covers the main usage paths and token persistence model, but it omits details like what the returned link looks like, how success/failure is communicated, and any security/caveat information. For a simple one-param optional tool it is above average, but still has gaps.

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 coverage is 0% (the optional 'token' parameter is just a string with no description), but the description compensates by explaining the token is a JWT and giving usage examples: call with { token: '<jwt>' } or no args to get the link. This fully covers the parameter's meaning and the no-arg behavior.

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 authenticates an IDE agent (like Cursor) with MCP.AI, specifying the browser login and token capture. It is specific enough about the resource and action, but it does not explicitly differentiate from the sibling 'connect' tool, so it misses full 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 explicit usage modes: no args to get a link, passing a token for session-only login, and a recommended config header approach for a permanent connection. It does not mention when not to use this tool or direct users to alternatives, but the in-tool mode guidance is strong.

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