Description
CoverSentry is a free, privacy-first tool that checks whether a cover letter appears AI-generated. Built on a fine-tuned BERT language model trained on a custom dataset of thousands of cover letters, it analyzes your text for patterns typical of machine-generated writing and returns a detection score with a plain-language explanation of what it means, helping job seekers avoid recruiter red flags before submitting an application.
You can upload a cover letter in PDF, DOCX, RTF or TXT format, or paste the text directly, and get instant results with recommendations to make the writing more human, such as adding personal touches, varying sentence structure and including specific examples. Processing happens on-the-fly on secure servers with no data storage, no cookies and no sign-up required for scans. Detection currently supports English only.
Beyond detection, CoverSentry offers a cover letter generator that creates personalized, human-like letters using premium third-party AI providers under GDPR, plus a free CV builder with ATS-friendly templates, live preview, 1,200+ job titles with suggested bullet points, and PDF or DOCX export with no registration. It also provides resume examples and enterprise solutions that let recruitment teams screen incoming applications for AI-generated content. CoverSentry is an independent project based in the Netherlands.
CoverSentry's Core Features
AI cover letter detection with confidence scoring
Fine-tuned BERT model trained on cover letters
Upload PDF, DOCX, RTF or TXT, or paste text
Improvement recommendations
Privacy-first, no data storage, no cookies
No sign-up required for scans
Human-like cover letter generation
Free ATS-friendly CV builder with PDF/DOCX export
How to use CoverSentry?
Upload your cover letter: Add a PDF, Word, RTF or text file, or paste the text directly.
Run the AI scan: The fine-tuned BERT model checks the text for AI-generated patterns.
Get your results: Receive a detection score showing whether it reads as human, AI, or in between, with recommendations.
Make improvements: Revise using the suggestions and rescan to confirm it reads as human-written.
CoverSentry's Use Cases
- Cover letter checking
- Improving applications
- Resume building
- Recruiter screening







