text-watermark-fountain

Embed and extract resilient text watermarks using Fountain Code encoding.

248|30|Updated Feb 18, 2026
One-click install
npx skills add https://github.com/cafe3310/public-agent-skills --skill text-watermark-fountain
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: text-watermark-fountain
Source: https://github.com/cafe3310/public-agent-skills/tree/main/skills_parked/text-watermark-fountain
Command: npx skills add https://github.com/cafe3310/public-agent-skills --skill text-watermark-fountain

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires python3, and includes scripts (resource) components.

What problem does it solve?

This Skill solves the challenge of embedding recoverable hidden identifiers into text while preserving the ability to detect the watermark after partial edits, deletions, or inserted content.

Core Features & Use Cases

  • Robust Text Watermarking: Encodes watermark strings by controlling sentence lengths with Fountain Code redundancy and synchronization markers.
  • Watermark Extraction: Recovers embedded marks from processed text using sync-frame detection and decoding algorithms.
  • Use Case: Add a hidden ownership marker to a long article, generated document, or experimental text artifact and later verify the embedded watermark after content changes.

Quick Start

Use the text watermark fountain skill to embed the watermark "name_1" into the provided long-form text and return the verified watermarked version.

Frequently Asked Questions about text-watermark-fountain

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I embed a hidden text watermark in a document?

To embed a hidden text watermark, this Skill uses Fountain Code encoding to modify sentence length patterns, allowing you to insert recoverable ownership markers into long-form text without altering readability.

How does steganography work for text watermark extraction?

Text watermark extraction works by detecting synchronization frames and applying decoding algorithms to recover embedded identifiers from sentence length modifications, even after the text undergoes partial edits or insertions.

Can I recover a text watermark if the document has been partially modified?

Yes, you can recover a text watermark after partial modifications because the Skill applies Fountain Code redundancy and synchronization markers, ensuring resilience against text deletions or inserted content.

Do I need Python to run text steganography scripts?

Yes, you need Python3 installed in your environment, as the Skill relies on Python-based scripts for deterministic watermark generation and recovery operations.

What is the best way to add ownership markers to generated text artifacts?

The best way to add ownership markers to generated text artifacts is by encoding watermark strings through sentence length patterns, providing a robust method for document attribution and later verification.