glyphsmythe 0.1.0

Reversible Unicode transforms and CLI for authorized LLM security and filter research (emoji VS stego, homoglyphs, zero-width).

glyphsmythe

glyphsmythe is a small Python library and CLI for security researchers who need to probe how LLMs and content filters handle unusual Unicode. It provides reversible transforms you can call from tests, scripts, or shell pipelines.

This package is intended for defensive research and authorized testing only. See the Acceptable Use Policy before use.

Install

Requires Python 3.9 or newer.

pip install glyphsmythe

What it does

• Emoji stego — hide UTF-8 bytes in variation selectors after a visible carrier (Paul Butler-style VS encoding)
• Homoglyphs — swap Latin letters for Cyrillic lookalikes and back
• Zero-width — encode bytes as ZWSP/ZWNJ (invisible on screen)
• Composable chains — layer transforms for regression fixtures
• Interleaved emoji stories — keep inline emoji visible while prose lives in variation selectors (encode --interleave; decode auto-detects)

Runtime dependencies: none (stdlib only). No install hooks, no network calls, no bundled executables.

CLI

glyphsmythe encode --method emoji --carrier x --text "canary:probe-001"
glyphsmythe decode -i encoded.txt          # auto-detects transform
glyphsmythe analyze -i encoded.txt
glyphsmythe encode --interleave -i story.txt -o hidden.txt
glyphsmythe lab
glyphsmythe chat-demo --preset context-guard

Python API

from glyphsmythe import decode, encode_story
from glyphsmythe.compose import apply_chain

hidden = encode_story("Hello 🌟 world")
plain = decode(hidden)

Documentation

• Full README and walkthroughs: https://github.com/zaphodbeeblebrox3rd/glyphsmythe
• Lantern Fox interleave demo: https://github.com/zaphodbeeblebrox3rd/glyphsmythe/blob/main/FOX_STORY.md
• Publishing notes: https://github.com/zaphodbeeblebrox3rd/glyphsmythe/blob/main/PUBLISHING.md

License

MIT License. Use must also follow the project Acceptable Use Policy linked above.