BSN-Chatsystem/docs/nanobanana-skill.md

name, description, version, category, metadata

name	description	version	category	metadata
nanobanana-image-gen	Bilder per NanoBanana API generieren — Text-to-Image + Image-to-Image (Brettspiel-Cover + Prompt) für BSN-News-Artikel	1.0.0	creative	hermes tags base_url token_env docs nanobanana image-generation bsn article-images midjourney-alternative https://api.nanobananaapi.ai NANOBANANA_API_KEY https://docs.nanobananaapi.ai

NanoBanana Image Generation — BSN News

API: https://api.nanobananaapi.ai Docs: https://docs.nanobananaapi.ai Auth: Authorization: Bearer <API_KEY> (in ~/.hermes/profiles/cody/.env als NANOBANANA_API_KEY) Modelle: NanoBanana AI (Basis), NanoBanana 2 (empfohlen), NanoBanana Pro

---

API-Referenz

POST /api/v1/nanobanana/generate-2 (empfohlen)

{
  "prompt": "Text-Prompt (max 20.000 Zeichen)",
  "imageUrls": ["https://...brettspiel-cover.jpg"],  // [] für Text-to-Image
  "aspectRatio": "16:9",   // 1:1|1:4|2:3|3:2|3:4|4:3|4:5|5:4|9:16|16:9|21:9|auto
  "resolution": "2K",      // 1K|2K|4K
  "googleSearch": false,   // Web-Grounding für Akkuratesse
  "outputFormat": "jpg",   // png|jpg
  "callBackUrl": ""        // Optional, für async
}

Response: {"code": 200, "msg": "success", "data": {"taskId": "abc123"}}

GET /api/v1/nanobanana/record-info?taskId=abc123

Response (fertig):

{
  "code": 200,
  "data": {
    "status": "SUCCESS",
    "imageUrls": ["https://cdn.nanobananaapi.ai/result/abc123_0.jpg"],
    "prompt": "...",
    "taskId": "abc123"
  }
}

Status-Werte: PENDING → warten, SUCCESS → fertig, FAILED → Fehler

POST /api/v1/nanobanana/generate (Basis-Modell)

{
  "prompt": "...",
  "type": "TEXTTOIAMGE",   // TEXTTOIAMGE|IMAGETOIAMGE
  "numImages": 1,          // 1-4
  "imageUrls": [],
  "callBackUrl": ""
}

---

BSN-Use-Cases

1. Artikel-Header-Bild aus Prompt

curl -s -X POST "https://api.nanobananaapi.ai/api/v1/nanobanana/generate-2" \
  -H "Authorization: Bearer $(bsn-secrets get bsn/nanobanana-key)" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Professional board game photography of Catan, hexagonal tiles, wooden pieces, warm lighting, 4K product shot style",
    "aspectRatio": "16:9",
    "resolution": "2K",
    "imageUrls": [],
    "outputFormat": "jpg"
  }'

2. Brettspiel-Cover veredeln (Image-to-Image)

curl -s -X POST "https://api.nanobananaapi.ai/api/v1/nanobanana/generate-2" \
  -H "Authorization: Bearer $(bsn-secrets get bsn/nanobanana-key)" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Transform this board game cover into a cinematic movie poster style, dramatic lighting, epic composition, keep the game title and theme",
    "imageUrls": ["https://example.com/catan-cover.jpg"],
    "aspectRatio": "2:3",
    "resolution": "2K",
    "outputFormat": "jpg"
  }'

3. Polling bis zum Ergebnis (Python)

import time, requests, json

API_KEY = subprocess.run(["bsn-secrets","get","bsn/nanobanana-key"], capture_output=True, text=True).stdout.strip()
HEADERS = {"Authorization": f"Bearer {API_KEY}", "Content-Type": "application/json"}

# Task starten
resp = requests.post("https://api.nanobananaapi.ai/api/v1/nanobanana/generate-2", headers=HEADERS, json={
    "prompt": prompt,
    "imageUrls": image_urls if image_urls else [],
    "aspectRatio": aspect_ratio,
    "resolution": resolution,
    "outputFormat": output_format,
}).json()

task_id = resp["data"]["taskId"]

# Pollen
for _ in range(30):  # max 5 Minuten
    time.sleep(10)
    r = requests.get(f"https://api.nanobananaapi.ai/api/v1/nanobanana/record-info?taskId={task_id}", headers=HEADERS).json()
    if r["data"]["status"] == "SUCCESS":
        return r["data"]["imageUrls"]
    elif r["data"]["status"] == "FAILED":
        raise Exception("Generation failed")

raise TimeoutError("Timeout after 5 minutes")

---

Prompt-Engineering für Brettspiele

Gute Prompts (funktionieren):

• "Professional product photography of [SPIELNAME] board game, box art, cinematic lighting, 4K resolution, clean background"
• "A family playing [SPIELNAME] at a wooden table, warm candlelight, cozy atmosphere, lifestyle photography"
• "Transform this board game cover into a [STIL] style poster, keep title and key art elements"

Aspect-Ratio-Guide:

Zweck	Ratio
Header-Bild (News)	16:9
Thumbnail	1:1
Instagram/Story	9:16
Cover-Reproduktion	2:3 (Standard-Brettspiel-Box)
Breitformat-Banner	21:9

Styles für Brettspiel-Bilder:

• product shot style — clean, wie Amazon-Produktbilder
• lifestyle photography — Menschen spielen am Tisch
• cinematic movie poster — dramatisch, episch
• flat lay top-down — von oben, alle Komponenten sichtbar
• watercolor illustration — künstlerisch, handgemalt

---

API-Key-Management

Der API-Key wird als Secret via bsn-secrets gespeichert:

echo "nb_api_key..." | bsn-secrets set bsn/nanobanana-key

Abruf: bsn-secrets get bsn/nanobanana-key

Key beziehen: https://nanobananaapi.ai/api-key

---

Kosten

• Credit-basiertes System — vor Nutzung Credits prüfen:

curl -s "https://api.nanobananaapi.ai/api/v1/common/account-credits" \
  -H "Authorization: Bearer $(bsn-secrets get bsn/nanobanana-key)"

Pitfalls

• Task ist asynchron — POST gibt sofort taskId zurück, Ergebnis erst nach 10-60s via GET
• NICHT blockierend warten — Pollen mit 10s Intervallen, max 30 Versuche
• imageUrls: [] für Text-to-Image — Leeres Array, nicht weglassen
• Prompt-Länge max 20K bei generate-2, weniger bei generate
• Aspect-Ratio als String "16:9" — nicht als Float
• Status-Check: Immer r["data"]["status"] prüfen — nicht r["code"]