playlists_update

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

No annotations are provided, so the description carries the full burden. It communicates quota cost, OAuth, and state-preservation, but does not describe error conditions, idempotency, or side effects of a partial failure.

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 dense, informative paragraph with no chaff. Could be split into shorter bullets for a 5, but the values justify the length.

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?

Covers all mutation inputs, quota, and auth. The lack of an output schema is acceptable for the standard update response of an MCP playlist tool, but rate/error behavior is only partially understood.

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% (7/7 documented). Provides essential descriptions for id, title, part, and preserved fields; describes enum and owner-channel semantics. Does not explain YT API nuances beyond the schema.

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?

Clearly states the action (Modify a YouTube playlist), the required id/title, and the override semantics. Sibling playlist_tools operate on items or playlist-level, and this description is specific enough to set expectations.

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?

Includes prerequisites (OAuth, quota) and preservation semantics, but does not explicitly list when to use this operation instead of playlistItems_update or playlists_insert.

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