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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=false, so the safety profile is covered; the description still adds value by disclosing what the response contains and establishing the once-per-session caching expectation. It does not discuss failure modes, but for a static documentation read that is a minor gap.

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 short sentences, front-loaded with the return payload and followed by the action guidance. Every clause carries information; no filler beyond the deliberate reassurance that the guide is short.

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?

With no output schema, the description compensates by enumerating the guide's sections, so the agent knows what it will receive. Combined with the annotations covering safety and the zero-parameter schema, nothing needed to call this tool correctly is missing.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline of 4 applies. No parameter meaning is lost because none exists.

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?

States a specific verb and resource ('Returns the complete how-to for Quillm') and then enumerates the actual contents (view code contract, template, importable libraries, styling rules, dataset conventions). An agent immediately knows this is the documentation primer, not a data or view operation, which separates it cleanly from siblings like get_view or create_view.

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?

Gives explicit when-to-use guidance with both timing and downstream dependency: 'Read this once per session before you call create_view or update_view.' It names the sibling tools it gates and even addresses the cost concern with 'It is short,' removing any reason to skip it.

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