VidLens

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

The timing bracket provides useful behavioral context not found in annotations, but critically fails to disclose mutation semantics: the 'reindexExisting' and 'activateCollection' parameters suggest this overwrites data and modifies system state, which the description omits entirely.

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 single sentence is front-loaded with the core purpose and avoids redundancy, earning its place. However, it is inappropriately brief for a 14-parameter configuration tool, lacking the necessary depth despite being structurally efficient.

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?

Grossly inadequate for the tool's complexity. With 14 parameters (including enums, ranges, and boolean flags), no output schema, and no annotations, the description provides insufficient context for safe and effective invocation.

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?

With 0% schema description coverage across 14 parameters, the description completely fails to compensate. No parameter semantics are provided for critical configuration options like chunkStrategy, embeddingProvider, or the distinction between collectionId and label.

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 specific action (import), resource (playlist), destination (local transcript knowledge base), and purpose (semantic search). However, it does not distinguish from sibling tool 'importVideos' or clarify when to prefer this over analyzing playlists without importing.

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 timing annotation [~5-30s, ~2s per video] provides implicit guidance about scale expectations, but there is no explicit guidance on when to use this versus 'importVideos' for individual videos, or prerequisites like collection setup.

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