NotebookLM MCP Server

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

With no annotations provided, the description carries the full burden. It discloses that the tool performs a sync operation (implying mutation) and requires user confirmation, which is useful behavioral context. However, it lacks details on potential side effects, error handling, or performance characteristics like rate limits, leaving gaps in transparency.

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 appropriately sized and front-loaded: the first sentence states the core purpose, followed by prerequisites and parameter explanations in a structured format. Every sentence adds value without redundancy, making it efficient and easy to parse.

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 has an output schema (which handles return values), no annotations, and 2 parameters with 0% schema coverage, the description does a good job covering purpose, usage, and parameter semantics. It's complete enough for basic use, though it could benefit from more behavioral details like error cases or sync scope.

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 description coverage is 0%, so the description must compensate. It adds meaningful semantics: 'source_ids: Source UUIDs to sync' clarifies the parameter's purpose and format, and 'confirm: Must be True after user approval' explains the requirement and rationale. This compensates well for the lack of schema descriptions, though it doesn't cover all possible nuances.

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 verb ('Sync') and resource ('Drive sources with latest content'), making the purpose specific and understandable. However, it doesn't explicitly differentiate from sibling tools like 'source_list_drive' beyond mentioning it as a prerequisite, so it doesn't fully achieve sibling differentiation.

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 guidance on when to use this tool: 'Call source_list_drive first to identify stale sources.' It also specifies a prerequisite condition: 'Requires confirm=True' and 'Must be True after user approval,' clearly indicating the context and approval needed before invocation.

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