add_tracks_to_playlist

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

With no annotations, the description carries the burden of disclosing behavior. It states prerequisites (existing playlist, edit permission), hints at partial failure ('If any tracks failed to add, explain why'), and describes the return value as a status dictionary with the number added. It does not address duplicate handling or reversibility, but the core behavior is transparent.

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 well-structured with headings, front-loads the main action, and then provides usage triggers, arguments, and return info. It is slightly repetitive—'Add tracks to an existing TIDAL playlist' appears twice—and the final catch-all trigger is redundant, but overall it is reasonably compact.

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?

For a two-parameter mutation tool with no annotations and no output schema, the description covers the key context: prerequisites, parameters, behavior, and return shape. It also gives post-processing guidance. It could include error cases or edge cases, but the essential information an agent needs is present.

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 0% and the schema provides only types, but the Args section adds meaningful semantics: playlist_id is the TIDAL ID of the playlist and track_ids is a list of TIDAL track IDs. This is enough for an agent to pass correct values, though examples or constraints are missing.

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 operation: 'Add tracks to an existing TIDAL playlist.' It emphasizes that the playlist must already exist, which distinguishes it from sibling tools like create_tidal_playlist. The explicit trigger examples further clarify the intended use.

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 gives explicit user-phrase triggers ('Add these songs to my playlist') and states preconditions: the playlist must already exist and the user must have permission. However, it does not explicitly name an alternative tool for non-existent playlists, so routing guidance stops short of full when-not coverage.

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