Local API

Plug browser profiles into your automation

Create, launch and manage profiles through a local API. It works with popular automation frameworks and lets AI assistants drive the browser.

Start for free See pricing

POST /api/profiles/start
{ "ids": ["p_01", "p_02", "p_03"] }

200 OK
[
  { "id": "p_01", "status": "running" },
  { "id": "p_02", "status": "running" },
  { "id": "p_03", "status": "running" }
]
// ws://127.0.0.1:9222

Why a local API?

The usual problems

With many profiles, opening and closing by hand can't keep up
Scripts and fingerprint profiles live in separate worlds
Long-running jobs need someone watching

With Killer Whale

Create, launch and close profiles in bulk via API
Connect straight to popular automation frameworks
Built for long, unattended jobs

Manage profiles in bulk

Create, edit, group, start and stop profiles through the API and plug them into the systems you already use.

RESTful endpoints
Live status for every profile

POST /api/profiles/start
{ "ids": ["p_01", "p_02", "p_03"] }

200 OK
[
  { "id": "p_01", "status": "running" },
  { "id": "p_02", "status": "running" },
  { "id": "p_03", "status": "running" }
]
// ws://127.0.0.1:9222

Works with the frameworks you know

Launch a profile, get its debugging address, and connect with Selenium, Puppeteer or Playwright.

Keep writing scripts your way
Separate fingerprint and proxy per profile

SeleniumPuppeteerPlaywright

CDP

#01

ws://127.0.0.1:9222connected

Hand it to AI with MCP

Killer Whale ships an MCP server. In any MCP-capable AI tool, launch profiles, open pages and change settings in plain language.

Automation without code
AI works inside isolated profiles

mcp · hujin-browserready

profile.list
profile.start
page.open
profile.update·
profile.stop·

Move over from other browsers

Import your existing profiles instead of rebuilding them, so switching tools costs far less.

import

profiles.xlsx128 rows

128 / 128100%

#001#002#003#004#005#006#007#008

Built to run for the long haul

Standard API

Read and write profile settings, clearly documented.

Stable long jobs

Made for round-the-clock automation.

Rich parameters

Fingerprints, proxies and groups, all via API.

Native MCP

Connect MCP-capable AI tools directly.

Connect in three steps

Open the API page

In the client, go to Automation → API.

Get your API key

Make sure the service is running, then copy the address and API key.

Start calling

Add the address and key to your script or AI tool.

Why Killer Whale AI Browser

Every profile has its own fingerprint, so accounts stay unlinked
The core follows official Chromium releases
Proxy IPs and browser profiles set up in one place
Window sync, a local API and AI automation
Teamwork that shares profiles, not passwords
Easy-to-use clients for Windows, macOS and Linux

FAQ

Still have questions? We're here to help.

Contact support

AI agents can create and launch profiles through the local API or MCP, then work inside each isolated profile. Accounts stay unlinked even when AI operates many of them at once.

First make sure the API service is running in the client. Team members also need an admin to enable API permissions for them.

The old key stops working immediately. Update your scripts and AI tools with the new key and restart the API service.

Privacy protection starts with Killer Whale

Every account gets a browsing environment of its own.

Start free

Available for Windows and macOS

Plug browser profiles into your automationPlug browser profilesinto your automation