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concat_clips_with_transition

Combine multiple video clips with customizable transitions like fade, slide, or wipe effects to create a single cohesive video file.

Instructions

Concatenate multiple video clips with transitions.

Args: input_video_clips (List[str]): A list of file paths (strings) to the video clips that will be concatenated. transition_type (str, optional): The type of transition to apply between clips. Supported transitions include: - fade (default), fadeblack, fadewhite, distance - wipeleft, wiperight, wipeup, wipedown - slideleft, slideright, slideup, slidedown - smoothleft, smoothright, smoothup, smoothdown - circlecrop, rectcrop, circleclose, circleopen - horzclose, horzopen, vertclose, vertopen - diagbl, diagbr, diagtl, diagtr - hlslice, hrslice, vuslice, vdslice - dissolve, pixelize, radial, hblur - wipetl, wipetr, wipebl, wipebr - zoomin, fadegrays, squeezev, squeezeh - hlwind, hrwind, vuwind, vdwind - coverleft, coverright, coverup, coverdown transition_duration (float, optional): Duration of the transition effect in seconds.

Returns: str: The absolute path to the final concatenated video with transitions applied.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
input_video_clipsYes
transition_typeNofade
transition_durationNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It implies a write operation ('Concatenate') and specifies the output (a file path), but lacks details on error handling, performance limits, or side effects like file overwriting. It adds some value but leaves gaps in behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with clear sections (Args, Returns) and front-loaded purpose. It efficiently lists transition types without unnecessary elaboration. However, the extensive enum list for 'transition_type' could be slightly verbose, though it serves a practical purpose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (3 parameters, no annotations, output schema provided), the description is mostly complete. It covers parameter details and return value, but lacks usage guidelines and some behavioral aspects like error handling. The output schema reduces the need to explain returns, but gaps in guidelines and transparency prevent a perfect score.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate fully. It provides detailed semantics for all parameters: 'input_video_clips' is explained as a list of file paths, 'transition_type' includes a comprehensive list of supported values with a default, and 'transition_duration' specifies units (seconds) and default. This adds significant meaning beyond the bare schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Concatenate multiple video clips with transitions'), identifies the resource (video clips), and distinguishes it from sibling tools like 'trim_and_concat_operation' by emphasizing the transition feature. It goes beyond a tautology by specifying the core functionality with precision.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'trim_and_concat_operation' or other video processing siblings. It lacks context about prerequisites, such as file format compatibility or performance considerations, leaving the agent without usage direction.

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

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