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

Annotations indicate readOnly=false, destructive=false, idempotent=true. The description adds valuable context: the permanent config approach vs session-only login, and the token format (JWT). It does not contradict annotations and explains the authentication flow.

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 informative sentence with clear instructions preloaded. It's concise enough, though it's a bit packed. It front-loads the purpose.

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 simple tool, the description covers the two usage modes ('config' vs 'paste'), explains the optional token, and implies the response (link). It doesn't explicitly state the return format, but that's not critical for this type of tool. Overall it's complete for an agent to use.

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 schema has one optional param 'token' with no description. The description explains its usage: providing a JWT for session login, or omitting for a link. This fully compensates for the 0% schema coverage.

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 identifies the tool as an authentication mechanism for IDE agents, explaining the login flow and token acquisition. While it doesn't explicitly distinguish from the sibling tool 'connect', the purpose is specific and actionable.

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 clear usage context: it explains both methods (config header vs. pasting token) and when to call with or without arguments. It lacks explicit comparison to sibling tools, but the guidance is sufficient for an agent to invoke correctly.

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