CAPTCHA Solving

CAPTCHAs are the most common blocker for browser automation. UseBrowser handles them in two ways: automatic solving via extensions, and agent-assisted human handoff.

Recommended: CAPTCHA solver extension

Install a CAPTCHA-solving Chrome extension (like Omocaptcha or SadCaptcha) directly in UseBrowser. These extensions detect and solve CAPTCHAs automatically in the background — no agent intervention needed.

Type	Method
hCaptcha	Token injection via solver extension
reCAPTCHA	Token injection via solver extension
Slider puzzles (Shopee etc.)	Bezier-curve drag simulation

Set API keys in the extension’s settings. Once configured, most CAPTCHAs are solved transparently without interrupting the agent’s workflow.

Slider CAPTCHAs

Slider puzzles (common on Shopee, Taobao) require a different approach. The agent uses native drag simulation — a 3-phase Bezier-curve drag with realistic noise and velocity that closely mimics human hand movement.

Video

CAPTCHA solving — auto-solve and slider drag

Two scenarios back-to-back. First: a reCAPTCHA appears on a login page. The solver extension activates — the checkbox clicks itself, the challenge is solved via token injection, page continues loading. No agent intervention. Second: a Shopee slider CAPTCHA appears. The cursor moves to the slider handle, then drags it across with a natural Bezier-curve motion — slight acceleration, subtle wobble, smooth deceleration at the target. The puzzle solves. ~20 seconds.

Fallback: human handoff

For CAPTCHAs that can’t be auto-solved — or sites with particularly aggressive anti-bot detection — the agent falls back to human handoff. It pings you via Telegram, you solve the CAPTCHA in the remote viewer, and the agent continues.

This two-layer approach (extension auto-solve + human fallback) means automation rarely gets permanently stuck.