Guide · Mimic + Playwright

Playwright + Multilogin X

Media buyers and MMO tech teams search “multilogin playwright” because UI clicking does not scale. The real loop is simple: authenticate, ask the local Launcher to start a profile with automation_type=playwright, then connectOverCDP to the port Multilogin returns.

Plan gate: Free has no API. You need Pro or higher — pricing. Playwright attaches to Mimic cores; Multilogin’s docs say Stealthfox + Playwright is not available yet.

Source of truth

• Official Playwright automation example
• Start profile (Launcher v2)
• Full API Postman documenter
• Our map: /guides/mlx-api/ · auth: API auth

Prerequisites

• Multilogin agent/app running on the machine (Launcher calls fail without it)
• folder_id + profile_id (copy from UI / DevTools / Postman)
• Node 18+, playwright, and something to hash MD5 for sign-in (official sample uses md5 / hashlib.md5)
• Proxy + TZ already coherent if you care about ads platforms — proxy guide

Flow that matches Multilogin’s sample

1. POST https://api.multilogin.com/user/signin
   body: { "email": "...", "password": "<md5 hex of password>" }
   → data.token  (help text: ~30 min; refresh or use automation token)

2. GET https://launcher.mlx.yt:45001/api/v2/profile/f/{folder_id}/p/{profile_id}/start
     ?automation_type=playwright&headless_mode=false
   Authorization: Bearer {token}
   → data.port

3. playwright.chromium.connectOverCDP(`http://127.0.0.1:${port}`)

4. Use the existing context/page — do not invent a naked chromium.launch()

5. Stop the profile via Launcher when the job ends
   (do not treat browser.close() as Multilogin stop)

Paths and hosts can change; if a call 404s, open the Postman documenter Launcher folder before rewriting your script.

Minimal connect snippet

import { chromium } from "playwright";

const browserURL = `http://127.0.0.1:${portFromLauncher}`;
const browser = await chromium.connectOverCDP(browserURL, { timeout: 10_000 });
const context = browser.contexts()[0];
const page = context.pages()[0] || await context.newPage();
await page.goto("https://example.com");

Full sign-in + start lives in our monorepo kit (and the mirrored public starter). Prefer starting via Launcher when you automate; CDP_URL-only mode is fine after a Postman start.

When connect fails

• App not running / wrong machine → Launcher never opened a port
• Forgot automation_type=playwright → response may lack a usable automation port
• Token expired (~30 min) → re-sign or refresh — token errors
• Port races / stale CDP → CDP attach desk

Ops for ads / MMO desks

Automate reporting and QA. Keep human review on policy-sensitive clicks. Isolation patterns: Facebook ads · Google ads · multi-account ads.

Get codes on Telegram Playwright kit Postman path