# genotrance/px

An HTTP proxy server to automatically authenticate through an NTLM proxy

Repository: https://github.com/genotrance/px
Canonical: https://ross.abutalabs.com/products/px
Language: Python
License: MIT
License Family: permissive
Last push: 2026-08-19T15:34:13+00:00

## Health v2 (maintenance only)
Score: 87/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 65, longevity 100
- inputs: {"age_days": 3668, "days_push": 14, "days_rel": 152, "gap_med": 43.0, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1124, forks 112 (observed 2026-08-28T04:03:40.807717+00:00)

## What it is
Px is an HTTP/HTTPS proxy server that automatically handles NTLM and Kerberos proxy authentication, typically in corporate environments, using Windows SSPI single sign-on or configured credentials. It is a Python-based CLI tool built on libcurl that supports all libcurl authentication mechanisms.

## Use cases
- authenticate through an NTLM corporate proxy
- use pip and git behind a corporate proxy that requires Windows authentication
- run a local proxy that handles Kerberos/NTLM handshake automatically
- configure proxy authentication with a PAC file
- bypass proxy for specific hosts while routing others through NTLM proxy
- run proxy authentication on Linux or macOS with domain credentials

## When to choose
- you are behind a corporate NTLM/Kerberos proxy and tools cannot authenticate themselves
- you want single sign-on proxy auth using the logged-in Windows account
- you need a cross-platform proxy authenticator with PAC file support

## When to avoid
- your proxy uses standard basic auth or no authentication
- you need a general-purpose forward proxy with caching or TLS inspection
- you need a GUI-managed proxy client

## Facets
- artifact type: cli-tool
- maturity: active
- function: proxy, auth, http-server, networking
- domain: networking, security, developer-tools
- platform: windows, python, cli, cross-platform
- tags: ntlm-proxy, kerberos, corporate-proxy, windows-sspi, single-sign-on, pac-file, libcurl, command-line, linux, macos

## Member repositories
- genotrance/px (main) score 87

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:40.807717+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:39:38.630536+00:00, confidence not recorded.
  - readme: https://github.com/genotrance/px (fetched 2026-08-28T04:03:40.807717+00:00, sha 0371467199e9)
- Data as of 2026-08-30T08:39:29.467469+00:00.