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

The description adds meaningful behavioral context beyond the annotations: it reveals that the tool can modify the server's config (permanent auth), initiate a session, and return a login link. It also clarifies the optional 'token' parameter and the no-argument case. While it doesn't discuss failure modes or side effects in depth, it exceeds the annotations' disclosure.

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 long, run-on sentence filled with instructions and asides. It does begin with 'MCP.AI for IDE agents (Cursor, etc.)' to set context, but the flow is hard to follow and could be split into clearer steps or bullets. It's not bloated, but structurally it could be improved.

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 single-parameter, no-output-schema tool, the description covers the essential behavior: how to obtain a token, how to pass it, and the permanent-vs-session distinction. It lacks details about return values errors, but the absence of an output schema lowers the burden. The description is adequately complete for the tool's simplicity.

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?

Despite 0% schema coverage, the description explains the 'token' parameter's purpose: it contains a JWT to be pasted for session login, and that calling with no args yields a link. This compensates for the schema's lack of description, though the phrasing is somewhat circuitous ('Best: add it to this server's config... Or paste it here').

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 this tool handles authentication for MCP.AI IDE agents, with a specific flow involving a browser login and token. The verb 'authenticate' is implied by the name and 'log in in the browser, copy the access token' provides concrete action. It does not explicitly contrast with sibling tools like 'connect' or 'marketplace', so it loses a point for lack of differentiation.

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 context that this is for IDE agents and explains two usage modes (permanent via config, session-only via parameters) plus the no-arg flow, which implies when to use it. However, it never addresses when *not* to use it or mentions any alternative tools (e.g., 'connect'), making the guidance mostly implicit.

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