AUTOMATION

Browser Automation with Truthful Fingerprinting via Mochi.js

Use Bun-native CDP framework to bypass WAF/bot-detection by emitting truthful hardware fingerprints

Updated: 5/12/2026
Difficulty
medium
Time
30m
Use Case
Automate browser interactions (form filling, captcha solving, web scraping) while bypassing WAF and bot-detection systems by using truthful hardware fingerprints instead of spoofing.
Popularity
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About this automation

Mochi.js is a Bun-native, raw-CDP browser automation framework that focuses on consistency and measured parity with regular traffic. Instead of cosmetic client-side probes, it uses a probe manifest based on analyzing WAF defenses and emits truthful hardware fingerprints (e.g., Linux fingerprints when running on Linux servers). This approach outperforms traditional browser automation by not lying about system state.

How to implement

1

Install Bun runtime and Mochi.js library

2

Define probe manifest based on target WAF analysis

3

Configure truthful hardware fingerprint emission (OS-matching)

4

Build automation workflow using Mochi's CDP interface

5

Test against target WAF (Turnstile, FingerprintJS, etc.)

6

Monitor suspect scores and bot-detection results

7

Iterate based on measured parity with regular traffic