feat: add Node.js and Python SDKs

- Node.js SDK: TypeScript, ESM+CJS, zero deps (uses native fetch)
- Python SDK: zero deps (uses urllib), Python 3.8+
- Both fully documented with examples and type hints
- Ready for npm/PyPI publishing

sdk/node/README.md

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+# SnapAPI Node.js SDK
+
+Official Node.js client for [SnapAPI](https://snapapi.eu) — the EU-hosted screenshot API.
+
+## Installation
+
+```bash
+npm install snapapi
+```
+
+## Quick Start
+
+```typescript
+import { SnapAPI } from 'snapapi';
+import fs from 'fs';
+
+const snap = new SnapAPI('your-api-key');
+
+// Simple screenshot
+const png = await snap.capture('https://example.com');
+fs.writeFileSync('screenshot.png', png);
+```
+
+## Usage
+
+### Basic Screenshot
+
+```typescript
+const screenshot = await snap.capture('https://example.com');
+```
+
+### With Options
+
+```typescript
+const screenshot = await snap.capture('https://example.com', {
+  format: 'jpeg',
+  width: 1920,
+  height: 1080,
+  quality: 90,
+});
+```
+
+### Full-Page Capture
+
+```typescript
+const screenshot = await snap.capture({
+  url: 'https://example.com/blog',
+  fullPage: true,
+  format: 'png',
+  deviceScale: 2, // Retina
+});
+```
+
+### Mobile Viewport
+
+```typescript
+const screenshot = await snap.capture({
+  url: 'https://example.com',
+  width: 375,
+  height: 812,
+  deviceScale: 2,
+});
+```
+
+### Wait for Dynamic Content
+
+```typescript
+const screenshot = await snap.capture({
+  url: 'https://example.com/dashboard',
+  waitForSelector: '#chart-loaded',
+  waitUntil: 'networkidle2',
+});
+```
+
+## API Reference
+
+### `new SnapAPI(apiKey, config?)`
+
+| Parameter | Type | Description |
+|-----------|------|-------------|
+| `apiKey` | `string` | Your SnapAPI API key (required) |
+| `config.baseUrl` | `string` | API base URL (default: `https://snapapi.eu`) |
+| `config.timeout` | `number` | Request timeout in ms (default: `30000`) |
+
+### `snap.capture(url, options?)` / `snap.capture(options)`
+
+Returns a `Promise<Buffer>` containing the screenshot image.
+
+| Option | Type | Default | Description |
+|--------|------|---------|-------------|
+| `url` | `string` | — | URL to capture (required) |
+| `format` | `'png' \| 'jpeg' \| 'webp'` | `'png'` | Output format |
+| `width` | `number` | `1280` | Viewport width (320–3840) |
+| `height` | `number` | `800` | Viewport height (200–2160) |
+| `fullPage` | `boolean` | `false` | Capture full scrollable page |
+| `quality` | `number` | `80` | JPEG/WebP quality (1–100) |
+| `waitForSelector` | `string` | — | CSS selector to wait for |
+| `deviceScale` | `number` | `1` | Device pixel ratio (1–3) |
+| `delay` | `number` | `0` | Extra delay in ms (0–5000) |
+| `waitUntil` | `string` | `'domcontentloaded'` | Load event to wait for |
+
+### `snap.health()`
+
+Returns API health status.
+
+### Error Handling
+
+```typescript
+import { SnapAPI, SnapAPIError } from 'snapapi';
+
+try {
+  const screenshot = await snap.capture('https://example.com');
+} catch (err) {
+  if (err instanceof SnapAPIError) {
+    console.error(`API error ${err.status}: ${err.detail}`);
+  }
+}
+```
+
+## EU-Hosted & GDPR Compliant
+
+SnapAPI runs entirely on EU infrastructure (Germany). Your data never leaves the EU. [Learn more](https://snapapi.eu).
+
+## License
+
+MIT — [Cloonar Technologies GmbH](https://snapapi.eu)

sdk/node/package.json

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+{
+  "name": "snapapi",
+  "version": "1.0.0",
+  "description": "Official Node.js SDK for SnapAPI — EU-hosted screenshot API",
+  "type": "module",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "import": "./dist/index.js",
+      "require": "./dist/index.cjs",
+      "types": "./dist/index.d.ts"
+    }
+  },
+  "files": ["dist"],
+  "scripts": {
+    "build": "tsc && tsc --module commonjs --outDir dist/cjs && mv dist/cjs/index.js dist/index.cjs && rm -rf dist/cjs",
+    "prepublishOnly": "npm run build"
+  },
+  "keywords": ["screenshot", "api", "webpage", "capture", "puppeteer", "headless", "eu", "gdpr"],
+  "author": "Cloonar Technologies GmbH",
+  "license": "MIT",
+  "homepage": "https://snapapi.eu",
+  "repository": {
+    "type": "git",
+    "url": "https://git.cloonar.com/openclawd/SnapAPI"
+  },
+  "engines": {
+    "node": ">=18"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  }
+}

sdk/node/src/index.ts

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+/**
+ * SnapAPI Node.js SDK
+ * Official client for https://snapapi.eu — EU-hosted screenshot API
+ *
+ * @example
+ * ```typescript
+ * import { SnapAPI } from 'snapapi';
+ *
+ * const snap = new SnapAPI('your-api-key');
+ * const screenshot = await snap.capture('https://example.com');
+ * fs.writeFileSync('screenshot.png', screenshot);
+ * ```
+ */
+
+export interface ScreenshotOptions {
+  /** URL to capture (required) */
+  url: string;
+  /** Output format: png, jpeg, or webp (default: png) */
+  format?: "png" | "jpeg" | "webp";
+  /** Viewport width in pixels, 320-3840 (default: 1280) */
+  width?: number;
+  /** Viewport height in pixels, 200-2160 (default: 800) */
+  height?: number;
+  /** Capture full scrollable page (default: false) */
+  fullPage?: boolean;
+  /** JPEG/WebP quality 1-100 (default: 80, ignored for PNG) */
+  quality?: number;
+  /** CSS selector to wait for before capturing */
+  waitForSelector?: string;
+  /** Device scale factor 1-3 (default: 1, use 2 for Retina) */
+  deviceScale?: number;
+  /** Extra delay in ms after page load, 0-5000 (default: 0) */
+  delay?: number;
+  /** Page load event to wait for (default: domcontentloaded) */
+  waitUntil?: "load" | "domcontentloaded" | "networkidle0" | "networkidle2";
+}
+
+export interface SnapAPIConfig {
+  /** API base URL (default: https://snapapi.eu) */
+  baseUrl?: string;
+  /** Request timeout in ms (default: 30000) */
+  timeout?: number;
+}
+
+export class SnapAPIError extends Error {
+  /** HTTP status code */
+  status: number;
+  /** Error message from the API */
+  detail: string;
+
+  constructor(status: number, detail: string) {
+    super(`SnapAPI error ${status}: ${detail}`);
+    this.name = "SnapAPIError";
+    this.status = status;
+    this.detail = detail;
+  }
+}
+
+export class SnapAPI {
+  private apiKey: string;
+  private baseUrl: string;
+  private timeout: number;
+
+  /**
+   * Create a new SnapAPI client.
+   *
+   * @param apiKey - Your SnapAPI API key
+   * @param config - Optional configuration
+   *
+   * @example
+   * ```typescript
+   * const snap = new SnapAPI('sk_live_...');
+   * ```
+   */
+  constructor(apiKey: string, config?: SnapAPIConfig) {
+    if (!apiKey) throw new Error("SnapAPI: apiKey is required");
+    this.apiKey = apiKey;
+    this.baseUrl = (config?.baseUrl ?? "https://snapapi.eu").replace(/\/$/, "");
+    this.timeout = config?.timeout ?? 30000;
+  }
+
+  /**
+   * Capture a screenshot of a URL.
+   *
+   * Returns the screenshot as a Buffer (Node.js) or Uint8Array.
+   *
+   * @param urlOrOptions - URL string or full ScreenshotOptions object
+   * @param options - Additional options when first arg is a URL string
+   * @returns Screenshot image as Buffer
+   *
+   * @example
+   * ```typescript
+   * // Simple usage
+   * const png = await snap.capture('https://example.com');
+   *
+   * // With options
+   * const jpg = await snap.capture('https://example.com', {
+   *   format: 'jpeg',
+   *   width: 1920,
+   *   height: 1080,
+   *   quality: 90
+   * });
+   *
+   * // Full-page capture
+   * const full = await snap.capture({
+   *   url: 'https://example.com',
+   *   fullPage: true,
+   *   format: 'png',
+   *   deviceScale: 2
+   * });
+   * ```
+   *
+   * @throws {SnapAPIError} When the API returns an error response
+   */
+  async capture(
+    urlOrOptions: string | ScreenshotOptions,
+    options?: Omit<ScreenshotOptions, "url">
+  ): Promise<Buffer> {
+    const body: ScreenshotOptions =
+      typeof urlOrOptions === "string"
+        ? { url: urlOrOptions, ...options }
+        : urlOrOptions;
+
+    if (!body.url) throw new Error("SnapAPI: url is required");
+
+    const controller = new AbortController();
+    const timer = setTimeout(() => controller.abort(), this.timeout);
+
+    try {
+      const res = await fetch(`${this.baseUrl}/v1/screenshot`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: `Bearer ${this.apiKey}`,
+        },
+        body: JSON.stringify(body),
+        signal: controller.signal,
+      });
+
+      if (!res.ok) {
+        let detail = `HTTP ${res.status}`;
+        try {
+          const json = (await res.json()) as { error?: string };
+          detail = json.error ?? detail;
+        } catch {}
+        throw new SnapAPIError(res.status, detail);
+      }
+
+      const arrayBuffer = await res.arrayBuffer();
+      return Buffer.from(arrayBuffer);
+    } finally {
+      clearTimeout(timer);
+    }
+  }
+
+  /**
+   * Check API health status.
+   *
+   * @returns Health check response
+   *
+   * @example
+   * ```typescript
+   * const health = await snap.health();
+   * console.log(health.status); // "ok"
+   * ```
+   */
+  async health(): Promise<{
+    status: string;
+    version: string;
+    uptime: number;
+    browser: {
+      browsers: number;
+      totalPages: number;
+      availablePages: number;
+      queueDepth: number;
+    };
+  }> {
+    const res = await fetch(`${this.baseUrl}/health`);
+    if (!res.ok) throw new SnapAPIError(res.status, "Health check failed");
+    return res.json() as any;
+  }
+}
+
+export default SnapAPI;

sdk/node/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "node",
+    "declaration": true,
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true
+  },
+  "include": ["src"]
+}