Combine clips into one file

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

Annotations include readOnlyHint=false, destructiveHint=false, and openWorldHint=true. The description adds useful detail about pause behavior but does not disclose whether existing clips are altered, whether output files are overwritten, or other side effects. No contradiction with annotations, but the openWorldHint is not clarified.

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 two sentences, front-loaded, and every clause is informative. It avoids fluff and directly gives operational instructions for ordering and pause durations.

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?

The description covers core usage and the tricky pause_durations parameter, but it omits information about filename/output_dir semantics and does not describe the output format. For a tool with 4 parameters and no output schema, this is a moderate gap.

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?

The description explains clip_ids ordering and pause_durations format in detail, supplementing the schema descriptions. However, filename and output_dir are not described in the schema nor in the description, leaving two of four parameters semantically under-specified.

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 uses a specific verb ('Merge') and resource ('existing clips') and clearly states the outcome ('single audio file'). This distinguishes it from sibling tools like list_clips or generate_speech, which do not combine existing clips.

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 clear context: combine existing clips in order, with optional pauses. It does not explicitly name alternatives or state when not to use it, but the phrase 'existing clips' implicitly separates it from generation tools.

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