# securisec/chepy

Chepy is a python lib/cli equivalent of the awesome CyberChef tool.

Repository: https://github.com/securisec/chepy
Canonical: https://ross.abutalabs.com/products/chepy
Language: Python
License: GPL-3.0
License Family: copyleft
Topics: cybersecurity, cyber, cyberchef, cli, python3, data-format, python-library
Last push: 2026-04-27T01:30:15+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 79, release rhythm 56, longevity 100
- inputs: {"age_days": 2503, "days_push": 129, "days_rel": 138, "gap_med": 99.0, "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 1051, forks 61 (observed 2026-08-28T04:03:23.161894+00:00)

## What it is
Chepy is a Python library and CLI tool that mirrors many capabilities of CyberChef, allowing data transformations like encoding, decoding, and file format parsing through a stackable, chainable API. It is extensible via plugins and offers full CLI autocompletion.

## Use cases
- decode and transform data like CyberChef but in Python
- solve CTF encoding challenges from the command line
- parse PE and ELF file formats in a script
- chain base64, base32, rot13, and hex transformations
- build reusable data transformation pipelines in Python

## When to choose
- you want CyberChef-style transformations in pure Python or a CLI
- you need scriptable, automatable data transformation with plugin support
- you work in a terminal and want autocompletion for transformation recipes

## When to avoid
- you prefer CyberChef's visual web interface for interactive exploration
- you need every single CyberChef recipe, as Chepy does not cover all of them

## Facets
- artifact type: library
- maturity: active
- function: cli, parser, serialization, developer-tools, security
- domain: security, developer-tools, files
- platform: python, cli, cross-platform
- tags: cyberchef, data-transformation, ctf, encoding, decoding, forensics, plugin-system, command-line

## Member repositories
- securisec/chepy (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:23.161894+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 2026-08-30T07:00:13.822114+00:00, confidence not recorded.
  - readme: https://github.com/securisec/chepy (fetched 2026-08-28T04:03:23.161894+00:00, sha dbb849cc6464)
  - registry_pypi: https://pypi.org/pypi/chepy/json (fetched 2026-08-29T13:01:37.736014+00:00, sha 472df8cfa2f7)
- Data as of 2026-08-30T08:39:29.467469+00:00.