About Quillstone

Quillstone helps teams maintain brand consistency and content quality at scale through AI-powered compliance checking.

Our Mission

We believe great brands deserve great content—consistently. Marketing teams, content creators, and developers struggle to maintain brand voice across thousands of pieces of content. Manual reviews don't scale, and traditional style guides sit unused in documentation.

Quillstone automates brand compliance with a hybrid validation engine that combines the speed of regex, the intelligence of RAG (Retrieval-Augmented Generation), and the nuance of large language models. This means your content gets checked for everything from forbidden terms to subtle tone violations—instantly.

How It Works

Our three-layer validation engine provides comprehensive brand compliance:

• Layer 1 (Regex): Lightning-fast deterministic checks catch obvious violations like forbidden terms or formatting issues
• Layer 2 (RAG): Vector search retrieves relevant brand guidelines automatically, ensuring context is always available
• Layer 3 (LLM): AI-powered analysis understands tone, voice, and nuanced style requirements

Who We Serve

Quillstone is built for modern content teams:

• Marketing Teams: Ensure brand consistency across campaigns, social media, and advertising
• Content Operations: Scale quality content production without sacrificing voice or compliance
• Developers: Integrate brand checking directly into CI/CD pipelines and content management systems
• Enterprise: Maintain compliance across distributed teams and multiple brands

Get Started

Ready to automate your brand compliance? Start with our free tier—10 requests per day, no credit card required.