diff --git a/README_session_binder.md b/README_session_binder.md
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+# Session Binder
+
+Утилита для управления сессиями браузера в локальной среде разработки.
+Позволяет быстро переключаться между аккаунтами, вставляя cookies в Chrome через CDP (Chrome DevTools Protocol).
+
+## Требования
+
+- Python 3.10+
+- Google Chrome / Chromium
+- playwright
+
+## Установка
+
+```bash
+pip install -r requirements-session-binder.txt
+playwright install chromium
+```
+
+## Использование
+
+### 1. Запустите Chrome в режиме отладки
+
+```bash
+google-chrome --remote-debugging-port=9222 --user-data-dir=/tmp/chrome-debug
+```
+
+### 2. Подготовьте файл cookies
+
+Формат — JSON-массив объектов с полями `name` и `value`.
+Опционально: `domain`, `path`, `httpOnly`, `secure`, `sameSite`, `expires`.
+
+```json
+[
+  {"name": "session_id", "value": "abc123"},
+  {"name": "auth_token", "value": "eyJhbG..."}
+]
+```
+
+См. пример: [`cookies_example.json`](cookies_example.json)
+
+### 3. Запустите утилиту
+
+```bash
+python session_binder.py --cookies cookies.json --url https://example.com
+```
+
+### Параметры
+
+| Флаг | Описание | По умолчанию |
+|---|---|---|
+| `--cookies` | Путь к JSON-файлу с cookies | **обязательный** |
+| `--url` | URL для навигации после вставки cookies | **обязательный** |
+| `--wait` | Время ожидания (секунды) для ручной привязки | `60` |
+| `--port` | Порт CDP (Chrome remote debugging) | `9222` |
+| `-v` / `--verbose` | Подробное логирование | выкл. |
+
+### Пример
+
+```bash
+# Запустить Chrome
+google-chrome --remote-debugging-port=9222 --user-data-dir=/tmp/chrome-debug &
+
+# Вставить cookies и открыть сайт
+python session_binder.py --cookies cookies_example.json --url https://example.com --wait 120
+
+# Нажмите Ctrl+C чтобы завершить досрочно
+```
+
+## Как это работает
+
+1. Подключается к запущенному Chrome через CDP на указанном порту.
+2. Вставляет cookies из JSON-файла в контекст браузера (`context.add_cookies()`).
+3. Переходит на указанный URL.
+4. Даёт разработчику время (`--wait`) для ручной привязки сессии (ввод email, телефона и т.д.).
+5. Закрывает браузер по истечении таймера или по Ctrl+C.
diff --git a/cookies_example.json b/cookies_example.json
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+++ b/cookies_example.json
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+[
+  {
+    "name": "session_id",
+    "value": "abc123def456"
+  },
+  {
+    "name": "auth_token",
+    "value": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
+  },
+  {
+    "name": "preferences",
+    "value": "lang=ru&theme=dark",
+    "path": "/",
+    "httpOnly": false,
+    "secure": false
+  }
+]
diff --git a/requirements-session-binder.txt b/requirements-session-binder.txt
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+++ b/requirements-session-binder.txt
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+playwright>=1.40
diff --git a/session_binder.py b/session_binder.py
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+++ b/session_binder.py
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+#!/usr/bin/env python3
+"""Session Binder — utility for managing browser sessions in a local dev environment.
+
+Opens a local Chrome instance via CDP (Chrome DevTools Protocol),
+injects cookies from a JSON file, navigates to the target URL,
+and gives the developer time to manually bind the session.
+"""
+
+import argparse
+import json
+import logging
+import sys
+import time
+from pathlib import Path
+from urllib.parse import urlparse
+
+from playwright.sync_api import sync_playwright, Error as PlaywrightError
+
+logger = logging.getLogger("session_binder")
+
+DEFAULT_CDP_PORT = 9222
+DEFAULT_WAIT_SECONDS = 60
+
+
+def setup_logging(verbose: bool = False) -> None:
+    level = logging.DEBUG if verbose else logging.INFO
+    handler = logging.StreamHandler(sys.stdout)
+    handler.setFormatter(
+        logging.Formatter(
+            "[%(asctime)s] %(levelname)s — %(message)s", datefmt="%H:%M:%S"
+        )
+    )
+    logger.setLevel(level)
+    logger.addHandler(handler)
+
+
+def load_cookies(path: Path, url: str) -> list[dict]:
+    """Load cookies from a JSON file and normalise them for Playwright.
+
+    Accepted formats:
+        1. List of {name, value} pairs  — domain is derived from *url*.
+        2. List of full Playwright cookie dicts (must contain at least
+           ``name``, ``value`` and ``domain``).
+    """
+    with open(path, encoding="utf-8") as fh:
+        raw: list[dict] = json.load(fh)
+
+    if not isinstance(raw, list):
+        raise ValueError("cookies JSON must be a list of objects")
+
+    parsed_url = urlparse(url)
+    domain = parsed_url.hostname or parsed_url.netloc
+
+    cookies: list[dict] = []
+    for entry in raw:
+        if "name" not in entry or "value" not in entry:
+            raise ValueError(f"each cookie must have 'name' and 'value': {entry!r}")
+
+        cookie: dict = {
+            "name": entry["name"],
+            "value": entry["value"],
+            "domain": entry.get("domain", domain),
+            "path": entry.get("path", "/"),
+        }
+
+        if "expires" in entry:
+            cookie["expires"] = entry["expires"]
+        if "httpOnly" in entry:
+            cookie["httpOnly"] = entry["httpOnly"]
+        if "secure" in entry:
+            cookie["secure"] = entry["secure"]
+        if "sameSite" in entry:
+            cookie["sameSite"] = entry["sameSite"]
+
+        cookies.append(cookie)
+
+    return cookies
+
+
+def run(
+    cookies_path: Path,
+    url: str,
+    wait_seconds: int = DEFAULT_WAIT_SECONDS,
+    cdp_port: int = DEFAULT_CDP_PORT,
+) -> None:
+    cookies = load_cookies(cookies_path, url)
+    logger.info("Loaded %d cookie(s) from %s", len(cookies), cookies_path)
+
+    cdp_url = f"http://127.0.0.1:{cdp_port}"
+
+    with sync_playwright() as pw:
+        logger.info("Connecting to Chrome via CDP at %s ...", cdp_url)
+        try:
+            browser = pw.chromium.connect_over_cdp(cdp_url)
+        except PlaywrightError as exc:
+            logger.error(
+                "Cannot connect to Chrome on port %d. "
+                "Make sure Chrome is running with --remote-debugging-port=%d\n"
+                "Example: google-chrome --remote-debugging-port=%d --user-data-dir=/tmp/chrome-debug",
+                cdp_port,
+                cdp_port,
+                cdp_port,
+            )
+            raise SystemExit(1) from exc
+
+        context = browser.contexts[0] if browser.contexts else browser.new_context()
+        page = context.new_page()
+
+        logger.info(
+            "Injecting cookies for domain(s): %s",
+            ", ".join({c["domain"] for c in cookies}),
+        )
+        context.add_cookies(cookies)
+
+        logger.info("Navigating to %s ...", url)
+        page.goto(url, wait_until="domcontentloaded")
+        logger.info("Page loaded. Title: %s", page.title())
+
+        logger.info(
+            "You have %d seconds to manually bind the session (email / phone / etc.).",
+            wait_seconds,
+        )
+        logger.info("Press Ctrl+C to finish early.")
+
+        try:
+            for remaining in range(wait_seconds, 0, -1):
+                if remaining % 10 == 0 or remaining <= 5:
+                    logger.info("  %d seconds remaining ...", remaining)
+                time.sleep(1)
+        except KeyboardInterrupt:
+            logger.info("Interrupted by user.")
+
+        logger.info("Closing browser ...")
+        page.close()
+        context.close()
+        browser.close()
+
+    logger.info("Done.")
+
+
+def parse_args(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description="Session Binder — inject cookies into a local Chrome via CDP.",
+    )
+    parser.add_argument(
+        "--cookies",
+        required=True,
+        type=Path,
+        help="Path to a JSON file with cookies (list of {name, value} objects).",
+    )
+    parser.add_argument(
+        "--url",
+        required=True,
+        help="Target URL to navigate to after cookie injection.",
+    )
+    parser.add_argument(
+        "--wait",
+        type=int,
+        default=DEFAULT_WAIT_SECONDS,
+        help=f"Seconds to wait for manual session binding (default: {DEFAULT_WAIT_SECONDS}).",
+    )
+    parser.add_argument(
+        "--port",
+        type=int,
+        default=DEFAULT_CDP_PORT,
+        help=f"Chrome remote debugging port (default: {DEFAULT_CDP_PORT}).",
+    )
+    parser.add_argument(
+        "-v",
+        "--verbose",
+        action="store_true",
+        help="Enable debug logging.",
+    )
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str] | None = None) -> None:
+    args = parse_args(argv)
+    setup_logging(args.verbose)
+
+    if not args.cookies.exists():
+        logger.error("Cookies file not found: %s", args.cookies)
+        raise SystemExit(1)
+
+    run(
+        cookies_path=args.cookies,
+        url=args.url,
+        wait_seconds=args.wait,
+        cdp_port=args.port,
+    )
+
+
+if __name__ == "__main__":
+    main()