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.
npx skills add sandyup/comfyui-mcp --skill flux-txt2imggit clone --depth 1 https://github.com/sandyup/comfyui-mcpWrote 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.
[](https://agentmods.dev/skills/sandyup/comfyui-mcp/flux-txt2img)<a href="https://agentmods.dev/skills/sandyup/comfyui-mcp/flux-txt2img"><img src="https://agentmods.dev/badge/skills/sandyup/comfyui-mcp/flux-txt2img/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.
<a href="https://agentmods.dev/skills/sandyup/comfyui-mcp/flux-txt2img"><img src="https://agentmods.dev/badge/skills/sandyup/comfyui-mcp/flux-txt2img.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00044 | $0.03700 |
| Opus 5 | $0.00022 | $0.01850 |
| Sonnet 5 | $0.00009 | $0.00740 |
| Haiku 4.5 | $0.00004 | $0.00370 |
Grade A, and why
flux-txt2img 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 9d 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.
This is a copy
89% identical to flux-txt2img — 54 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 286 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flux Text-to-Image Workflows
Overview
Flux is a guidance-distilled diffusion model family from Black Forest Labs. It uses a separate FluxGuidance node instead of KSampler CFG (which must always be 1.0). Three variants are available locally:
- Flux.1 Dev SRPO — Fine-tuned Flux.1 Dev with SRPO alignment. Uses DualCLIPLoader (T5XXL + CLIP-L). BF16 only.
- Flux 2 Klein 9B — Distilled Flux 2 variant. Uses single CLIPLoader (Qwen3-8B) +
flux2-vae.safetensors. Fast 4-step generation. - Flux 2 Turbo LoRA — Applied to Flux.1 Dev for 4-step generation.
Models
Flux.1 Dev SRPO
| Component | Node | Model | Notes |
|---|---|---|---|
| UNET | UNETLoader |
flux.1-dev-SRPO-BFL-bf16.safetensors |
22.7GB, BF16 only — FP8 produces broken results |
| CLIP | DualCLIPLoader (type=flux) |
clip_name1: t5xxl_fp8_e4m3fn.safetensors, clip_name2: clip_l.safetensors |
T5XXL (4.7GB) + CLIP-L (235MB) |
| VAE | VAELoader |
ae.safetensors |
Standard Flux VAE (320MB). Z-Image uses the same VAE architecture but different weights — its VAE is a separate file (z-image-ae.safetensors), not this one |
Flux 2 Klein 9B
| Component | Node | Model | Notes |
|---|---|---|---|
| UNET | UNETLoader |
bigLove_klein1.safetensors |
17.3GB, Klein 9B variant |
| CLIP | CLIPLoader (type=flux) |
qwen_3_8b_fp8mixed.safetensors |
Qwen3-8B in text_encoders/ (8.3GB) |
| VAE | VAELoader |
flux2-vae.safetensors |
Flux 2 specific VAE (321MB) |
Klein 9B vs Flux.1 Dev: Klein uses Qwen3-8B text encoder (not T5XXL + CLIP-L). It has a different VAE (flux2-vae.safetensors). 9B distilled runs in 4 steps; 9B base needs ~50 steps at CFG 5.0. Fits in ~20GB VRAM with FP8.
Flux 2 Turbo LoRA (applied to Flux.1 Dev)
| Component | Node | Model | Notes |
|---|---|---|---|
| LoRA | LoraLoaderModelOnly |
flux2-turbo-lora.safetensors |
2.6GB, strength 1.0 |
| Alt LoRA | LoraLoaderModelOnly |
Flux2TurboComfyv2.safetensors |
Community variant, same size |
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.
- 9d ago First seen · 286 lines · 44 tokens per session scan A ab07170c0195
flux-txt2img is a skill published in the GitHub repository sandyup/comfyui-mcp (1 stars, last pushed 2mo ago), licensed MIT. It adds 44 tokens to every session and 3,700 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to flux-txt2img, differing in 54 lines, and is treated as a copy.
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