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 AnastasiyaW/codex-claude-code-config --skill flux2-klein-promptinggit clone --depth 1 https://github.com/AnastasiyaW/codex-claude-code-configWrote 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/anastasiyaw/codex-claude-code-config/flux2-klein-prompting)<a href="https://agentmods.dev/skills/anastasiyaw/codex-claude-code-config/flux2-klein-prompting"><img src="https://agentmods.dev/badge/skills/anastasiyaw/codex-claude-code-config/flux2-klein-prompting/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/anastasiyaw/codex-claude-code-config/flux2-klein-prompting"><img src="https://agentmods.dev/badge/skills/anastasiyaw/codex-claude-code-config/flux2-klein-prompting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium System Prompt Leakage · line 9 Skill contains patterns that could indirectly extract system prompts through rephrasing, translation, summarization, or side-channel techniques.Fix: Guard against indirect extraction by refusing to summarize, translate, or rephrase system instructions. Add explicit anti-extraction clauses.
- medium Data Exfiltration · line 172 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 172 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 173 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00218 | $0.03006 |
| Opus 5 | $0.00109 | $0.01503 |
| Sonnet 5 | $0.00044 | $0.00601 |
| Haiku 4.5 | $0.00022 | $0.00301 |
Grade B, and why
flux2-klein-prompting scanned grade B with 2 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 5d 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
create = requests.post( "https://api.bfl.ai/v1/flux-2-klein-4b", Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
create = requests.post( How it starts
The opening of the file, as written. The whole thing — 276 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FLUX.2 [klein] — Prompt Engineering Guide
Core principle: prose, not tags
BFL guidance favors a concrete natural-language description over an ambiguous bag of tags. State who/what is in the image, where, style, materials/light/camera and — for editing — the properties to preserve. Prompt shape is a starting point, not a quality guarantee; assess the result against the requested edit.
Model variants quick reference
| Axis | Options | Notes |
|---|---|---|
| Size | 4B / 9B | 9B better for complex instructions; 4B fastest |
| Mode | Distilled / Base | Use the exact model-card or serving API settings; step/CFG values are implementation-specific |
| License | 4B Apache-2.0 / 9B Non-Commercial | Check before commercial use |
| Task | T2I / Edit (I2I) / Multi-reference | The current BFL image-editing guide documents up to 8 references via API (10 in playground); re-check the selected endpoint schema before use |
9B uses Qwen3 8B text embedder → solid multilingual support (Russian works natively).
Prompt structure
T2I (text-to-image)
- Subject — who/what, key attributes
- Scene/context — where, time of day, surroundings
- Composition — framing, angle, background
- Light/materials — source, softness, reflections, texture
- Style/genre — photorealism, illustration, catalog, poster, UI
- Text in image (if needed) — exact string in quotes + position/font
Edit (I2I, no mask)
- Base anchor — "This exact image but…"
- What to change — object / background / text / color / material
- What to preserve — face, lighting, style, perspective, brand elements
- Multi-reference — reference by "image 2 / image 3", keep prompt concise
Key rules
Text in image → always in straight quotes, specify position. Without this: garbled glyphs.
Заголовок: "ТОЧНЫЙ ТЕКСТ". Шрифт жирный гротеск, ровный кернинг. Других надписей не добавлять.
Negatives → positives → don't say "don't change X", say "preserve X"
❌ "не меняй освещение"
✅ "Сохрани освещение, перспективу и лицо"
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.
- 5d ago Changed · +17 lines 33dcd57068ba
- 12d ago First seen · 259 lines · 218 tokens per session scan B 1c95abce2b1c
flux2-klein-prompting is a skill published in the GitHub repository AnastasiyaW/codex-claude-code-config (150 stars, last pushed 3d ago), licensed MIT. It adds 218 tokens to every session and 3,006 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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