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

The description adds behavioral context beyond annotations: it explains the login flow in the browser, the token's role, and the permanent vs. session distinction. It aligns with annotations (idempotent, non-destructive) and doesn't contradict them. It could have mentioned idempotency explicitly, but the description covers key behavior.

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 dense sentence but front-loaded with the core action. It's efficient and covers all necessary details without excessive verbosity. Could be split into shorter sentences for readability, but it earns its place.

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's simplicity (one optional param, no output schema), the description is complete: it covers usage scenarios, token handling, and setup. The context signals support that the description fully compensates for the lack of schema documentation.

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%, but the description thoroughly explains the only parameter: 'token' is a JWT, and passing it authenticates, while no args yields a link. This adds critical meaning beyond the schema's bare type declaration.

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: to authenticate for IDE agents via browser login and token retrieval. It specifies the action (log in, copy access token) and the resource (this server's config or session). It distinguishes itself from siblings by focusing on authentication, though it doesn't explicitly differentiate from 'connect'.

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 instructions: it explains the two modes (permanent config header vs. session-only token) and when to use each. It also states how to call the tool (with token or without args). However, it doesn't explicitly mention alternative tools or exclusions, so it's not a perfect 5.

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