take_playlist_snapshot

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

There are no annotations, so the description carries the behavioral burden. It discloses that the tool writes a local JSON file and that dry_run=true previews without writing. It could add details like file location/return value, but the main persistence and side-effect behavior is clearly communicated.

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 core behavior is front-loaded and the text is organized, but the 'See also' list and the 'Snapshot guide' overlap somewhat, so it is slightly longer than strictly necessary.

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 does not clearly state what the non-dry-run invocation returns or where the snapshot file is written. For a state-creating tool with five parameters, that return-value gap keeps it from being fully complete, though schema covers all parameters and dry-run behavior is described.

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%, so the baseline is 3, but the description adds value by specifying that snapshots contain uri/name/added_at and that dry_run previews the walk plus target filename. That goes beyond the schema's generic parameter descriptions.

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 (capture), resource (live playlist's items), and output (timestamped local JSON snapshot file). It also differentiates itself from the legacy snapshot_playlist and nearby read/diff snapshot tools, so an agent can tell what this tool uniquely does.

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?

Explicitly says it is preferred over legacy snapshot_playlist and the 'Snapshot guide' maps create vs list vs read vs diff vs restore tools. This gives clear when-to-use and alternative routing rather than leaving it to inference.

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