Nano Banana 2 Texto a Imagen: Generación rápida de prompt a imagen con controles de aspecto y seguridad | RunComfy
Genera imágenes de alta calidad a partir de prompts de texto con Nano Banana 2, con controles prácticos de relación de aspecto, tolerancia de seguridad, formato de salida y mejora opcional de prompts.
Table of contents
1. Get started
Use RunComfy's API to run google/nano-banana-2/text-to-image. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/google/nano-banana-2/text-to-image \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A cinematic close-up portrait of an American woman standing under neon lights in rainy Tokyo, shallow depth of field, reflective wet streets, ultra-detailed, realistic skin texture"
}'2. Authentication
Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.
3. API reference
Submit a request
Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/google/nano-banana-2/text-to-image \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A cinematic close-up portrait of an American woman standing under neon lights in rainy Tokyo, shallow depth of field, reflective wet streets, ultra-detailed, realistic skin texture"
}'Monitor request status
Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").
curl --request GET \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
--header "Authorization: Bearer <token>"Retrieve request results
Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.
curl --request GET \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
--header "Authorization: Bearer <token>"Cancel a request
Cancel a queued job by request_id, in-progress jobs cannot be cancelled.
curl --request POST \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
--header "Authorization: Bearer <token>"4. File inputs
Hosted file (URL)
Provide a publicly reachable HTTPS URL. Ensure the host allows server‑side fetches (no login/cookies required) and isn't rate‑limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre‑signed URLs for private assets.
5. Schema
Input schema
{
"type": "object",
"title": "Input",
"required": [
"prompt"
],
"properties": {
"prompt": {
"title": "Prompt",
"description": "El prompt para la generación de imágenes.",
"type": "string",
"default": "A cinematic close-up portrait of an American woman standing under neon lights in rainy Tokyo, shallow depth of field, reflective wet streets, ultra-detailed, realistic skin texture"
},
"num_images": {
"title": "Número de imágenes",
"description": "La cantidad de imágenes a generar.",
"type": "integer",
"default": 1,
"minimum": 1,
"maximum": 4
},
"seed": {
"title": "Seed",
"description": "La semilla del generador de números aleatorios.",
"type": "integer",
"default": 0
},
"aspect_ratio": {
"title": "Relación de aspecto (A:H)",
"description": "La relación de aspecto de la imagen generada.",
"type": "string",
"enum": [
"auto",
"21:9",
"16:9",
"3:2",
"4:3",
"5:4",
"1:1",
"4:5",
"3:4",
"2:3",
"9:16"
],
"default": "auto"
},
"resolution": {
"title": "Resolución",
"description": "La resolución de la imagen a generar.",
"type": "string",
"enum": [
"0.5K",
"1K",
"2K",
"4K"
],
"default": "1K"
},
"output_format": {
"title": "Formato de salida",
"description": "El formato de la imagen generada.",
"type": "string",
"enum": [
"jpeg",
"png",
"webp"
],
"default": "png"
},
"safety_tolerance": {
"title": "Tolerancia de seguridad",
"description": "El nivel de tolerancia de seguridad para moderación de contenido. 1 es el más estricto y 6 el menos estricto.",
"type": "integer",
"enum": [
1,
2,
3,
4,
5,
6
],
"default": 4
},
"limit_generations": {
"title": "Limitar generaciones",
"description": "Si es true, limita cada ronda de prompts a una sola generación.",
"type": "boolean",
"default": true
},
"enable_web_search": {
"title": "Habilitar búsqueda web",
"description": "Habilita la búsqueda web para usar información reciente en la generación.",
"type": "boolean",
"default": false
}
}
}Output schema
{
"output": {
"type": "object",
"properties": {
"image": {
"type": "string",
"format": "uri",
"description": "single image URL"
},
"video": {
"type": "string",
"format": "uri",
"description": "single video URL"
},
"images": {
"type": "array",
"description": "multiple image URLs",
"items": { "type": "string", "format": "uri" }
},
"videos": {
"type": "array",
"description": "multiple video URLs",
"items": { "type": "string", "format": "uri" }
}
}
}
}RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.