wan-flf-video

wan-flf-video is a skill for Claude Code from artokun/comfyui-mcp. It costs 33 tokens per session (5,941 once invoked), scanned A, original, MIT.

A workflow for creating a video transition between a starting image and an ending image with WAN 2.2. It uses the model’s separate high-noise and low-noise stages in two passes.

In plain words
What is it for?
Use it to build first-to-last-frame image-to-video workflows with the native WAN 2.2 method or the WanVideoWrapper VACE method.
Why use it?
It prevents a common setup mistake: using only one model stage, which can produce broken or low-quality video.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the comfy plugin — 42 skills, 11 commands, 4 agents, 2 hooks shipped together

Good fit Use it to build first-to-last-frame image-to-video workflows with the native WAN 2.2 method or the WanVideoWrapper VACE method.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/artokun/comfyui-mcp/wan-flf-video
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add artokun/comfyui-mcp --skill wan-flf-video
Clone the repo
git clone --depth 1 https://github.com/artokun/comfyui-mcp

Made for: Claude Code.

Or install comfy, the plugin that ships this one along with the rest of its 42 skills, 11 commands, 4 agents, 2 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for wan-flf-video

README.md
[![agentmods](https://agentmods.dev/badge/skills/artokun/comfyui-mcp/wan-flf-video/github.svg)](https://agentmods.dev/skills/artokun/comfyui-mcp/wan-flf-video)
Your own site
<a href="https://agentmods.dev/skills/artokun/comfyui-mcp/wan-flf-video"><img src="https://agentmods.dev/badge/skills/artokun/comfyui-mcp/wan-flf-video/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for wan-flf-video

Your own site · 80×15
<a href="https://agentmods.dev/skills/artokun/comfyui-mcp/wan-flf-video"><img src="https://agentmods.dev/badge/skills/artokun/comfyui-mcp/wan-flf-video.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,941 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00033 $0.05941
Opus 5 $0.00016 $0.02971
Sonnet 5 $0.00007 $0.01188
Haiku 4.5 $0.00003 $0.00594

Measured 12d ago against content hash e5645daa2495, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

wan-flf-video scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

plugin/skills/wan-flf-video/SKILL.md · 474 lines

How it starts

The opening of the file, as written. The whole thing — 474 lines — stays where its author put it; the contents beside it link to each section on GitHub.

WAN 2.2 First-Last-Frame (FLF) Video Workflows

Overview

First-Last-Frame (FLF) video generation takes a start image and an end image and generates a smooth video transition between them. The WAN 2.2 I2V (Image-to-Video) 14B model is good at this.

CRITICAL: Dual Hi-Lo Architecture (REQUIRED)

WAN 2.2 I2V uses a split-noise architecture. Unlike WAN 2.1, the 2.2 model was trained with separate HighNoise and LowNoise components that handle different denoising ranges. You MUST use both models in a two-pass KSamplerAdvanced setup. Using a single model produces low-quality, broken output.

  • HighNoise model (pass 1, steps 0→N/2) establishes structure, motion, and composition
  • LowNoise model (pass 2, steps N/2→N) refines details and keeps fidelity to input frames
  • Both passes share the same conditioning from WanFirstLastFrameToVideo
  • Pass 1 returns noisy latent → Pass 2 continues from there

NEVER use a single KSampler with only one model for WAN 2.2 I2V.

Two native approaches are available:

  1. Native Dual Hi-Lo (Default): WanFirstLastFrameToVideo + dual KSamplerAdvanced two-pass
  2. WanVideoWrapper: WanVideoVACEStartToEndFrame + WanVideoVACEEncode + WanVideoSampler (VACE, caching, context windows)

Models

UNET Pairs (Always load BOTH Hi and Lo)

Remix NSFW (Recommended, built-in lightning, fp16):

Model Loader Notes
Wan2.2_Remix_NSFW_i2v_14b_high_lighting_fp16_v2.1.safetensors UNETLoader HighNoise, built-in lightning acceleration
Wan2.2_Remix_NSFW_i2v_14b_low_lighting_fp16_v2.1.safetensors UNETLoader LowNoise, built-in lightning acceleration

GGUF Q8 (Alternative, needs external lightning LoRAs):

Model Loader Notes
Wan2.2-I2V-A14B-HighNoise-Q8_0.gguf UnetLoaderGGUF HighNoise, quantized
Wan2.2-I2V-A14B-LowNoise-Q8_0.gguf UnetLoaderGGUF LowNoise, quantized

Official fp8:

Model Loader Notes
wan2.2_i2v_high_noise_14B_fp8_scaled.safetensors UNETLoader HighNoise, needs lightning LoRA
wan2.2_i2v_low_noise_14B_fp8_scaled.safetensors UNETLoader LowNoise, needs lightning LoRA

Read the full file on GitHub · 474 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 474 lines · 33 tokens per session scan A e5645daa2495

Subscribe to this mod's changes

wan-flf-video is a skill published in the GitHub repository artokun/comfyui-mcp (740 stars, last pushed 2d ago), licensed MIT. It adds 33 tokens to every session and 5,941 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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