invisible_core
Pure config for a patched Firefox stealth profile - zero Playwright dependency.
seed → fingerprint profile → Firefox prefs, plus patched-binary download,
proxy config, and geo/timezone resolution. Importing it does not start a browser,
which is the point: the same fingerprint config backs an automation wrapper and,
through it, an MCP server, without either depending on the other.
(It backed a desktop profile manager too, until that repository was deleted on
2026-08-18. The package it published, invisible-firefox, is still on PyPI.)
The shared foundation used by:
- invisible_playwright - the
Playwright automation wrapper (
InvisiblePlaywright). The only direct consumer.
And through it, for anyone who would rather prompt than script:
- invisible-playwright-mcp
- the wrapper as an MCP server, for a client that brings its own model.
- AIHawk - an interface and a model, from one command.
The engine itself lives in firefox_antidetect_patch, a Firefox patched at the C++ source level so the fingerprint is produced by the browser instead of injected into the page.
pip install invisible-core
from invisible_core import generate_profile, translate_profile_to_prefs, ensure_binary
profile = generate_profile(seed=42) # deterministic Bayesian fingerprint
prefs = translate_profile_to_prefs(profile) # dict of Firefox user prefs
binary = ensure_binary() # path to the patched Firefox binary
Same seed → same fingerprint, every time.
What the fields actually mean
Which surfaces a browser fingerprint is made of, what each one gives away, and why consistency between them matters more than any single value, is written up at the invisible_playwright wiki. Those pages are about the problem, not about this package, and several of them record something we got wrong first. A few that document the exact fields this package generates:
- Pinning fingerprint fields -
how
pin=interacts with the Bayesian sampler, and which combinations it refuses because they don't occur on real hardware. - How to make Linux and macOS report real Windows fonts -
the font side of
generate_profile, and why the family list is bundled rather than sampled from the host. - Canvas and WebGL fingerprints, identical across OSes - why the same seed produces a byte-identical hash regardless of what's actually running underneath.
- Playwright timezone does not match the proxy IP - the surfaces this package's geo/timezone resolution has to keep in agreement.
1 maintainer
Release files for invisible-core 30.20.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| invisible_core-30.20.0.tar.gz | 471.8 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| invisible_core-30.20.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 724.7 kB
Release files / invisible_core-30.20.0.tar.gz
| Download URL | invisible_core-30.20.0.tar.gz |
|---|---|
| Size | 471.8 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
abd4c9c1257e64d349d6e42887d292c191147247e85f890702e337e9df3dddeb
|
|
BLAKE2b-256 checksum How to use checksums |
8749e0c579906fbf4658d7bda3b4d1dc305da47a8ee24cef7f083efed2aec976
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.12.14
|
Release files / invisible_core-30.20.0-py3-none-any.whl
| Download URL | invisible_core-30.20.0-py3-none-any.whl |
|---|---|
| Size | 252.8 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
b00a07425073539ce14421d54862cac3fe8c53eb9714ade32e5bb9c31b376cd2
|
|
BLAKE2b-256 checksum How to use checksums |
42c94fcdd63c2c8b6d0a816b22e3e1cdb6a961fa1cb6c865700c8acfc1d7873c
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.12.14
|
