Agent Skills › calesthio/OpenMontage › flux-best-practices

flux-best-practices

GitHub

提供BFL FLUX图像生成模型的提示词最佳实践，涵盖T2I、I2I编辑、结构化JSON及排版等场景的Prompt构建公式与模型选型指南。

.agents/skills/flux-best-practices/SKILL.md calesthio/OpenMontage

Trigger Scenarios

为FLUX.1或FLUX.2模型编写图像生成提示词需要进行文本到图像(T2I)或图像到图像(I2I)生成使用FLUX模型进行品牌色精准生成或排版渲染

Install

npx skills add calesthio/OpenMontage --skill flux-best-practices -g -y

More Options

Non-standard path

npx skills add https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/flux-best-practices -g -y

Use without installing

npx skills use calesthio/OpenMontage@flux-best-practices

指定 Agent (Claude Code)

npx skills add calesthio/OpenMontage --skill flux-best-practices -a claude-code -g -y

安装 repo 全部 skill

npx skills add calesthio/OpenMontage --all -g -y

预览 repo 内 skill

npx skills add calesthio/OpenMontage --list

SKILL.md

Frontmatter

{
    "name": "flux-best-practices",
    "metadata": {
        "tags": "flux, bfl, image-generation, prompting, t2i, i2i",
        "author": "Black Forest Labs",
        "version": "1.0.0"
    },
    "description": "Comprehensive guide for BFL FLUX image generation models. Covers prompting, T2I, I2I, structured JSON, hex colors, typography, multi-reference editing, and model-specific best practices for FLUX.2 and FLUX.1 families."
}

FLUX Best Practices

Use this skill when generating prompts for any BFL FLUX model to ensure optimal image quality and accurate prompt interpretation.

Extended reference: AGENTS.md in this directory is the long-form upstream FLUX guide (vendored from Black Forest Labs). It is supplementary reference material scoped to this skill only — SKILL.md is the loadable entry point and the authority. It does not override or extend the repository-root AGENTS.md / AGENT_GUIDE.md.

When to Use

Creating prompts for FLUX.2 or FLUX.1 models
Text-to-image (T2I) generation
Image-to-image (I2I) editing with FLUX.2 models
Structured scene generation with JSON
Typography and text rendering
Multi-reference style transfer
Color-accurate brand generations

Quick Reference

Prompt Structure Formula

[Subject] + [Action/Pose] + [Style/Medium] + [Context/Setting] + [Lighting] + [Camera/Technical]

Model Selection

Use Case	Recommended Model	Notes
Fastest generation	FLUX.2 [klein]	4B or 9B, sub-second
Highest quality	FLUX.2 [max]	Best detail, grounding search
Production balanced	FLUX.2 [pro]	Quality + speed
Typography/text	FLUX.2 [flex]	Best text rendering
Local/development	FLUX.2 [dev]	Open weights
Image editing	FLUX.2 [pro/max]	Pass image URL directly to input_image
Inpainting	FLUX.1 Fill	Object removal/completion
Context editing	FLUX.1 Kontext	Older model, prefer FLUX.2

Critical Rules

NO negative prompts - FLUX does not support negative prompts; describe what you want
Be specific - Vague prompts produce mediocre results
Use natural language - Prose/narrative style works best
Specify lighting - Lighting has the biggest impact on quality
Quote text - Use "quoted text" for typography rendering
Hex colors - Use #RRGGBB format with color description

For API integration (endpoints, polling, webhooks), see the bfl-api skill.

Rules Reference

Read individual rule files for detailed guidance:

rules/core-principles.md - Universal FLUX prompting principles
rules/flux2-models.md - FLUX.2 family: klein, max, pro, flex, dev
rules/flux1-models.md - FLUX.1 family: older generation of FLUX.2 models - pro, Kontext, Fill
rules/t2i-prompting.md - Text-to-image prompting patterns
rules/i2i-prompting.md - Image-to-image editing with FLUX.2
rules/json-structured-prompting.md - Complex scene composition
rules/hex-color-prompting.md - Precise color specification
rules/typography-text.md - Text rendering and typography
rules/multi-reference-editing.md - Multi-image references
rules/negative-prompt-alternatives.md - Positive alternatives
rules/model-selection-guide.md - Choosing the right model

Example Prompt

A weathered fisherman in his 70s with deep wrinkles and a salt-and-pepper beard,
wearing a navy cable-knit sweater, standing at the helm of his wooden boat.
Golden hour sunlight from the left creates dramatic rim lighting on his profile.
Shot on Hasselblad with 85mm lens at f/2.8, shallow depth of field with harbor
lights creating soft bokeh in the background. Kodak Portra 400 color science.