CipherPrompt DLP by Agata Ćwirko IT

Prevent accidental leaks of API keys, passwords, database strings, and corporate secrets into ChatGPT, Claude, Gemini, and AI platforms.

Some features may require payment

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About this extension

CipherPrompt DLP is a real-time, privacy-first Data Loss Prevention extension that automatically scans text pasted or files dropped into AI chat tools before they reach external LLM servers.

🛡 Key Features
Real-Time Client-Side Inspection: Scans prompt input fields on ChatGPT, Claude, Gemini, Copilot, Perplexity, DeepSeek, and custom AI web platforms.
Instant Secret Redaction & Blocking: Detects and sanitizes OpenAI keys, AWS credentials, Anthropic keys, Slack tokens, JWTs, DB connection URIs, PEM certificates, credit cards, and PESEL numbers.
100% In-Memory Processing: All inspection happens locally in your browser memory. Zero prompt text, user input, or browsing data is ever uploaded or stored remotely.
File Drag & Drop Protection: Inspects dropped text files and blocks unauthorized file formats (such as .kdbx, .pem, .id_rsa, .key).
Custom Enterprise Domains: Easily add self-hosted or internal corporate AI platforms with one click.
Custom Regex Rules: Define your own custom regex patterns for proprietary project codes and secret formats.

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Permissions and data

Required permissions:

Access your data for chatgpt.com
Access your data for chat.openai.com
Access your data for gemini.google.com
Access your data for claude.ai
Access your data for copilot.microsoft.com
Access your data for perplexity.ai
Access your data for poe.com
Access your data for deepseek.com
Access your data for chat.deepseek.com
Access your data for mistral.ai
Access your data for chat.mistral.ai
Access your data for meta.ai
Access your data for grok.com
Access your data for x.ai
Access your data for huggingface.co
Access your data for groq.com
Access your data for chat.groq.com
Access your data for openrouter.ai
Access your data for v0.dev
Access your data for bolt.new
Access your data for character.ai
Access your data for notebooklm.google.com
Access your data for duckduckgo.com
Access your data for phind.com
Access your data for you.com
Access your data for chat.lmsys.org
Access your data for replit.com
Access your data for cursor.com
Access your data for manus.im
Access your data for manus.ai

Optional permissions:

Access your data for sites in the creem.io domain
Access your data for chatgpt.com
Access your data for chat.openai.com
Access your data for gemini.google.com
Access your data for claude.ai
Access your data for copilot.microsoft.com
Access your data for perplexity.ai
Access your data for poe.com
Access your data for deepseek.com
Access your data for chat.deepseek.com
Access your data for mistral.ai
Access your data for chat.mistral.ai
Access your data for meta.ai
Access your data for grok.com
Access your data for x.ai
Access your data for huggingface.co
Access your data for groq.com
Access your data for chat.groq.com
Access your data for openrouter.ai
Access your data for v0.dev
Access your data for bolt.new
Access your data for character.ai
Access your data for notebooklm.google.com
Access your data for duckduckgo.com
Access your data for phind.com
Access your data for you.com
Access your data for chat.lmsys.org
Access your data for replit.com
Access your data for cursor.com
Access your data for manus.im
Access your data for manus.ai
Access your data for api.creem.io
Access your data for credlock-proxy.kryen-krzysztof-cwirko.workers.dev
Access your data for cipher-prompt.pl
Access your data for 127.0.0.1:18820
Access your data for localhost:18820

Required data collection, according to the developer:

Authentication information