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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is largely covered; 'Read-only' is somewhat redundant. The description adds real value beyond annotations by disclosing the prerequisite that chat questions appear only once sources are ready, and by explaining how the returned suggested-report prompts chain into notebook_generate_artifact and notebook_ask.

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?

A single dense, front-loaded sentence opens with the resource and its contents, then adds the sibling disambiguation and endpoint. Nothing is wasted, though the parenthetical chaining detail makes it slightly heavy for one sentence.

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 carries the burden of describing the return value, and it does so concretely (summary, suggested reports with title/prompt, suggested chat questions). An agent knows what it will receive and how to use it downstream.

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 100% with a single well-documented 'notebook' parameter, so the schema already carries full parameter semantics. The description adds no format or sourcing detail beyond the schema, making the baseline 3 appropriate.

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+resource (get the notebook guide) and enumerates its contents: a cross-source summary, suggested reports with title/prompt, and suggested chat questions. It explicitly differentiates itself from the sibling notebook_get_source, so an agent can pick it correctly without opening schemas.

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?

Names the alternative tool for a related but different need ('For one source's summary and key topics use notebook_get_source') and states a runtime prerequisite ('only once sources are ready'). Both the when-to-use and when-to-use-something-else conditions are covered.

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