invisible_core
Pure config for a patched Firefox stealth profile - zero Playwright dependency.
seed → fingerprint profile → Firefox prefs, plus patched-binary download,
proxy config, geo/timezone resolution, and invisible_core.juggler: the client
that drives the engine over its own protocol, with the human input rhythm, which
every wrapper below shares instead of carrying a copy. 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). - invisible_selenium and invisible_puppeteer - the Selenium and pyppeteer APIs on the same engine.
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.
uv add invisible-core
from invisible_core import (ensure_binary, generate_profile, prepare_session_geo,
translate_profile_to_prefs)
profile = generate_profile(seed=42) # deterministic Bayesian fingerprint
geo = prepare_session_geo("auto", None) # zone and language of the exit (here, this machine's public IP)
prefs = translate_profile_to_prefs(profile, locale=geo.locale, timezone=geo.timezone)
binary = ensure_binary() # path to the patched Firefox binary
Same seed → same fingerprint, every time. The timezone is required: a session without one would run on the host's own zone.
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
Metadata
1 maintainer
Release files for invisible-core 49.46.0
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-49.46.0.tar.gz | 1.4 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| invisible_core-49.46.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 2.5 MB
Release files / invisible_core-49.46.0.tar.gz
| Download URL | invisible_core-49.46.0.tar.gz |
|---|---|
| Size | 1.4 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
742e030284ed1ee25745fd67a7492409f1aeea20a456534a4e210c50bb3a1adf
|
|
BLAKE2b-256 checksum How to use checksums |
b4309d0bbd9bf8b0ea568fdd36a673cb31aa2a11f5661c2cc43de95dd9c422f3
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.12.15
|
Release files / invisible_core-49.46.0-py3-none-any.whl
| Download URL | invisible_core-49.46.0-py3-none-any.whl |
|---|---|
| Size | 1.0 MB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
da183fcdd6f3e401eae62660e204d7eb7e337c41925f3ef0be548da520676b6a
|
|
BLAKE2b-256 checksum How to use checksums |
cc012238ddd466a8b236ff82b53c1db2daf8cc300cc476fb677264f96f699fa9
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.12.15
|
