feat: nano banana text to image

modules/tool/packages/openrouterMultiModal/children/NanoBanana/config.ts

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+import { defineTool } from '@tool/type';
+import { FlowNodeInputTypeEnum, WorkflowIOValueTypeEnum } from '@tool/type/fastgpt';
+
+export default defineTool({
+  name: {
+    'zh-CN': 'Nano Banana 文生图',
+    en: 'Nano Banana Text-to-Image'
+  },
+  description: {
+    'zh-CN': '使用Nano Banana模型将文本描述转换为图像。',
+    en: 'Convert text descriptions to images using Nano Banana models.'
+  },
+  toolDescription: 'Convert text descriptions to images using Nano Banana models.',
+  versionList: [
+    {
+      value: '0.1.0',
+      description: 'Default version',
+      inputs: [
+        {
+          key: 'text',
+          label: '提示词',
+          description: '生成图片的提示词',
+          toolDescription: '生成图片的提示词',
+          placeholder: '描述图片内容, 如: 生成一个关于人工智能的图片',
+          renderTypeList: [FlowNodeInputTypeEnum.input, FlowNodeInputTypeEnum.reference],
+          valueType: WorkflowIOValueTypeEnum.string,
+          required: true
+        },
+        {
+          key: 'aspect_ratio',
+          label: '宽高比',
+          description: '图像的宽高比，例如 "1:1", "16:9", "3:4" 等，支持从 1:1 到 21:9',
+          renderTypeList: [FlowNodeInputTypeEnum.select, FlowNodeInputTypeEnum.reference],
+          defaultValue: '1:1',
+          valueType: WorkflowIOValueTypeEnum.string,
+          required: true,
+          list: [
+            { label: '1:1', value: '1:1' },
+            { label: '2:3', value: '2:3' },
+            { label: '3:2', value: '3:2' },
+            { label: '3:4', value: '3:4' },
+            { label: '4:3', value: '4:3' },
+            { label: '4:5', value: '4:5' },
+            { label: '5:4', value: '5:4' },
+            { label: '9:16', value: '9:16' },
+            { label: '16:9', value: '16:9' },
+            { label: '21:9', value: '21:9' }
+          ]
+        }
+      ],
+      outputs: [
+        {
+          valueType: WorkflowIOValueTypeEnum.string,
+          key: 'imageUrl',
+          label: '图片',
+          description: '生成的图片'
+        }
+      ]
+    }
+  ]
+});

modules/tool/packages/openrouterMultiModal/children/NanoBanana/index.ts

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+import config from './config';
+import { InputType, OutputType, tool as toolCb } from './src';
+import { exportTool } from '@tool/utils/tool';
+
+export default exportTool({
+  toolCb,
+  InputType,
+  OutputType,
+  config
+});

modules/tool/packages/openrouterMultiModal/children/NanoBanana/src/index.ts

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+import { z } from 'zod';
+import { POST } from '@tool/utils/request';
+import { uploadFile } from '@tool/utils/uploadFile';
+
+export const InputType = z.object({
+  apiKey: z.string(),
+  text: z.string(),
+  aspect_ratio: z.enum(['1:1', '2:3', '3:4', '4:3', '2:1', '3:2', '16:9', '9:16', '21:9', '9:21'])
+});
+
+export const OutputType = z.object({
+  imageUrl: z.string()
+});
+
+const OPENROUTER_BASE_URL = 'https://openrouter.ai/api/v1/chat/completions';
+
+export async function tool({
+  apiKey,
+  text,
+  aspect_ratio
+}: z.infer<typeof InputType>): Promise<z.infer<typeof OutputType>> {
+  const token = `Bearer ${apiKey}`;
+  const { data } = await POST(
+    OPENROUTER_BASE_URL,
+    {
+      model: 'google/gemini-2.5-flash-image-preview',
+      messages: [
+        {
+          role: 'user',
+          content: text,
+          modalities: ['image', 'text'],
+          image_config: {
+            aspect_ratio: aspect_ratio
+          }
+        }
+      ]
+    },
+    {
+      headers: {
+        Authorization: token,
+        'Content-Type': 'application/json'
+      }
+    }
+  );
+
+  // modal response is a base64 string
+  const dataUrl = data.choices[0].message.images[0].image_url.url;
+  if (!dataUrl || !dataUrl.startsWith('data:')) {
+    return Promise.reject('Failed to generate image');
+  }
+
+  const match = dataUrl.match(/^data:([^;]+);base64,/);
+  const mime = match?.[1];
+  const ext = (() => {
+    const m = mime.split('/')[1];
+    return m && m.length > 0 ? m : 'png';
+  })();
+  const defaultFilename = `image.${ext}`;
+
+  const meta = await uploadFile({ base64: dataUrl, defaultFilename });
+  if (!meta.accessUrl) {
+    return Promise.reject('Failed to upload image');
+  }
+  return {
+    imageUrl: meta.accessUrl
+  };
+}

modules/tool/packages/openrouterMultiModal/children/NanoBanana/test/index.test.ts

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+import { expect, test } from 'vitest';
+import tool from '../index';
+
+test(async () => {
+  expect(tool.name).toBeDefined();
+  expect(tool.description).toBeDefined();
+  expect(tool.cb).toBeDefined();
+});

modules/tool/packages/openrouterMultiModal/config.ts

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+import { defineToolSet } from '@tool/type';
+import { ToolTypeEnum } from '@tool/type/tool';
+
+export default defineToolSet({
+  name: {
+    'zh-CN': 'OpenRouter 多模态',
+    en: 'OpenRouter Multi-Modal'
+  },
+  courseUrl: 'https://openrouter.ai/docs/quickstart',
+  type: ToolTypeEnum.multimodal,
+  description: {
+    'zh-CN': '这是一个OpenRouter 多模态工具集，支持调用多种OpenRouter平台提供的模型服务',
+    en: 'This is an OpenRouter multi-modal tool set, supporting various model services provided by the OpenRouter platform'
+  },
+  toolDescription:
+    'This is an OpenRouter multi-modal tool set, supporting various model services provided by the OpenRouter platform',
+  secretInputConfig: [
+    {
+      key: 'apiKey',
+      label: 'API Key',
+      required: true,
+      inputType: 'secret'
+    }
+  ]
+});

modules/tool/packages/openrouterMultiModal/index.ts

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+// You  should not modify this file, if you need to modify the tool set configuration, please modify the config.ts file
+
+import config from './config';
+import { exportToolSet } from '@tool/utils/tool';
+
+export default exportToolSet({
+  config
+});

modules/tool/packages/openrouterMultiModal/package.json

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+{
+  "name": "@fastgpt-plugins/tool-openrouter-multi-modal",
+  "module": "index.ts",
+  "type": "module",
+  "scripts": {
+    "build": "bun ../../../../scripts/build.ts"
+  },
+  "devDependencies": {
+    "@types/bun": "latest"
+  },
+  "peerDependencies": {
+    "typescript": "^5.0.0"
+  },
+  "dependencies": {
+    "zod": "^3.24.2"
+  }
+}