---
title: "Agent Video Style Kit — AI video effect for captions & subtitles"
description: "Cut30's title and caption style kit for 9:16 and 16:9: JSON your agent reads plus an HTML preview. Runnable in varg's code2video templates. Install in Claude Code, Codex and Grok with one command."
url: https://varg.ai/how-to/skills/cut30-agent-video-style-kit
updated: 2026-10-30
---

# Agent Video Style Kit — effect skill for captions & subtitles

> **For AI agents:** find the right skill in one call — `curl -s "https://varg.ai/how-to/api/search?q=<what the person wants>"` returns the matching how-to page and the best skills with install commands, as markdown (Russian works too). Full index: https://varg.ai/how-to/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the how-to page. From a terminal: `curl -fsSL https://varg.ai/install | sh` installs the vargai CLI (https://varg.ai/how-to/cli.md): `vargai search` and `vargai install <slug>` with no key, every varg model after `vargai login`.

Cut30's title and caption style kit for 9:16 and 16:9: JSON your agent reads plus an HTML preview. Runnable in varg's code2video templates.

- **Type:** [Effect](https://varg.ai/how-to/effects.md) · [Captions & subtitles](https://varg.ai/how-to/browse/skills/captions.md)
- **Slug:** `cut30-agent-video-style-kit`
- **Status:** live
- **Publisher:** Cut30 (vendor)
- **License:** Cut30 terms: use and customize for personal or commercial videos, keep Cut30 attribution on the kit page
- **Source:** https://cut30.co/guides/agent-video-style-kit
- **Works in:** Claude Code, Codex, Cursor
- **Requires:** bun, ffmpeg, Google Chrome or Chromium, python3 (only for kit.py validate/embed)
- **Cost:** Free: renders locally, no varg API key. Transcribing the audio for word timings through the varg API is billed separately.
- **Runtime:** about 3 s for the 6 s example per ratio; one ffmpeg pass over your footage

## What it does

Cut30's Agent Video Style Kit (https://cut30.co/guides/agent-video-style-kit) stores your title and caption style in one JSON file your editing agent reads, with separate specs for 9:16 (1080x1920) and 16:9 (1920x1080): TikTok Sans, a white rounded title bar, white captions with a dark outline at 2-3 words per chunk, exact positions, an alternative caption spot above the head, line limits and suggested safe zones. It comes with an HTML preview page, a schema, a validator (kit.py) and agent instructions: say "use my video style guide" and the agent applies it. Free from Cut30, no account. varg's code2video templates repo ships the kit unmodified with a renderer (render.ts) that burns its title and timed captions onto footage from words.json or an SRT and flags text that wraps too far or enters a safe zone; local, no credits.

## Use when

- "Use my video style guide": the same titles and captions on every short
- Burn a transcript or SRT onto a talking-head video as 2-3 word captions
- Set up a title and caption style kit for an editing agent, for 9:16 and 16:9
- Check that captions stay inside platform safe zones and line limits

## Not for

- Transcribing audio (get words.json from varg transcription or Whisper first)
- Animated karaoke or anime-style captions (use anime-jp-subtitles or caption-styles)
- Generating footage (use varg-ai)

## Install

- Claude Code: `git clone --depth 1 https://github.com/vargHQ/code2video-templates ~/code2video-templates && ln -s ~/code2video-templates/agent-video-style-kit ~/.claude/skills/agent-video-style-kit`
- setup-prompt: `Paste Cut30's setup prompt from https://cut30.co/guides/agent-video-style-kit into your agent (downloads https://cut30.co/agent-video-style-kit/agent-video-style-kit.zip and verifies its SHA-256).`
- Any agent, with the vargai CLI: `vargai install cut30-agent-video-style-kit`

## Example output

https://s3.varg.ai/files/194b94d0-58ff-4e8b-91de-4f1959d04013/file_8eb82edbc04b.mp4 — Rendered with the template itself: bun render.ts --title "Your title, your captions" --text "…" --duration 7, the 9:16 and 16:9 examples side by side on the kit's schematic scene. (credit: Cut30 kit, rendered by varg, https://cut30.co/guides/agent-video-style-kit)

## More captions & subtitles skills

- [3D Camera Captions](https://varg.ai/how-to/skills/hyperframes-camera-3d-captions.md): Captions that live in 3D around a talking head: the camera flies through the words, heroes pass behind the speaker.
- [Remotion Captions](https://varg.ai/how-to/skills/remotion-captions.md): Transcribe speech and burn in animated captions with Remotion, or import an existing SRT file.
- [ElevenLabs Speech to Text](https://varg.ai/how-to/skills/elevenlabs-speech-to-text.md): Transcribe audio and video with word timestamps, speaker labels and keyterms, ready for subtitles.
- [ElevenLabs Speech to Text (inference.sh)](https://varg.ai/how-to/skills/inference-sh-elevenlabs-stt.md): Transcribe audio with ElevenLabs Scribe, speaker diarization and forced alignment, via inference.sh.
- [Speech to Text](https://varg.ai/how-to/skills/inference-sh-speech-to-text.md): Transcribe audio with ElevenLabs Scribe v2 or Whisper V3 Large, with timestamps and speaker labels.
- [Pretext Text Metrics](https://varg.ai/how-to/skills/pretext-yaniv-golan.md): Measure and fit text without the DOM using pretext: auto-fit sizes, know line breaks before render, canvas/WebGL text.

## Run the generation on varg

varg is one API key for the models these skills drive — Seedance 2.5, Kling 4, Veo 3.1, Wan 3, Nano Banana 2.1, GPT Image 2.5, ElevenLabs v4 and 200+ more — billed in credits, with a cost estimate before anything runs.

- Any agent with a terminal: `curl -fsSL https://varg.ai/install | sh` (Windows: `irm https://varg.ai/install.ps1 | iex`), then `vargai login` and every model is a command — `vargai generate_video …`, `vargai estimate_cost …` (https://varg.ai/how-to/cli/)
- Claude Code: `claude plugin marketplace add vargHQ/skills && claude plugin install varg@varg` (skill + hosted MCP)
- Codex, Cursor, Gemini CLI, OpenClaw: `npx skills add vargHQ/skills --skill varg-ai -a <agent> -y`
- Grok and any agent that reads SKILL.md: `npx skills add vargHQ/skills --skill varg-ai`, or point it at the skill's SKILL.md
- Claude.ai, ChatGPT, any MCP client: connect `https://mcp.varg.ai/mcp`
- API key: https://varg.ai/dashboard/api · Model specs: https://varg.ai/models/llms.txt