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source_delete

Remove a source from a NotebookLM notebook. Provide notebook ID and source ID, and set confirm=true to permanently delete the source.

Instructions

Delete a source from a notebook (requires confirm=true)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
confirmYesMust be true to confirm deletion
source_idYesThe source ID
notebook_idYesThe notebook ID
Behavior3/5

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

With no annotations provided, the description carries the burden of behavioral disclosure. It reveals the confirmation gate ('requires confirm=true') as a safety mechanism, but lacks details about permanence, side effects, or error behavior. It adds some transparency but is not comprehensive for a destructive operation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence that front-loads the action and key constraint. Every word earns its place, with no unnecessary filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description is adequate for a simple delete tool, covering the purpose and the critical confirm requirement. However, it lacks information about return values, idempotency, or what happens after deletion. Given no output schema and no annotations, more context would be beneficial, but the current level is minimally sufficient.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the parameters are already well-documented. The description merely restates the confirm requirement already present in the schema, adding no new semantic value beyond what is in the input schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Delete'), the resource ('a source from a notebook'), and a key requirement ('requires confirm=true'). This distinguishes it from sibling tools like source_describe (read) and notebook_delete (delete notebook), making the purpose unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies when to use the tool (to delete a source) and provides a critical prerequisite (confirm=true). However, it does not mention alternatives or explicitly state when not to use this tool, so the guidance is partial rather than fully explicit.

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

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