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

Annotations already declare idempotent and non-destructive, but description adds meaningful context: two modes (no args returns link, token args logs in) and the concept of permanent vs session-only. No contradictions.

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?

Three sentences with no fluff, but the opening 'MCP.AI for IDE agents' is slightly awkward and could be streamlined. Information is front-loaded and each sentence adds value.

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 simple single-param tool with no output schema, the description covers the main behavior (link retrieval and session login) and even mentions the config alternative. It doesn't explain return format or error cases, but these are not critical.

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 description fully explains the 'token' parameter (paste here for session), and states the no-args case (get link). This is excellent compensation for the lack of schema descriptions.

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 action (log in, copy access token) and resource (MCP.AI for IDE agents). It distinguishes from siblings by focusing on authentication, but could be more explicit as an 'Authenticate' tool.

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: best practice (config header for permanent connection) and alternative (paste token for session-only). Does not directly compare to sibling tools like 'connect', but gives clear when-to-use context.

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