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generate_montage

Generate dynamic montages from FCPXML clips with customizable pacing curves, clip durations, and optional transitions. Filter by keywords and set target duration for precise video editing.

Instructions

Create rapid-fire montages with pacing curves (accelerating, decelerating, pyramid)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filepathYesSource FCPXML with clips
output_pathYesWhere to save montage
target_durationYesTotal montage length (e.g., '30s', '00:00:30:00')
pacing_curveNoHow clip duration changes over timeaccelerating
start_durationNoClip duration at start (seconds)
end_durationNoClip duration at end (seconds)
keywordsNoFilter clips by keywords
add_transitionsNoAdd quick dissolves
Behavior2/5

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

With no annotations, the description bears full burden. It mentions creating montages with pacing but does not disclose side effects (e.g., timeline modifications, file overwriting) or output behavior. The description is too brief to be transparent.

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

Conciseness5/5

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

Single sentence that efficiently conveys the core functionality and key differentiator (pacing curves). No wasted words; front-loaded with action.

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

Completeness2/5

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

For a complex tool with 8 parameters and no output schema, the description is too minimal. It lacks information about return values, behavior with filters, and effects on existing timeline, leaving significant gaps for an agent.

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

Parameters3/5

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

All 8 parameters are described in the schema (100% coverage). The description adds no extra parameter meaning beyond what the schema already provides, so baseline 3 is appropriate.

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?

Description clearly states the tool creates 'rapid-fire montages' with specific pacing curves, providing a specific verb and resource that distinguishes it from siblings like 'add_audio' or 'detect_gaps'.

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

Usage Guidelines3/5

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

Description implies usage for montage creation but offers no explicit guidance on when to use versus alternatives, no prerequisites, or exclusions. The purpose is clear but usage context is left to inference.

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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