Does Nullgen store or transmit prompt history?

No. Nullgen is built on a zero-trust data collection principle where the core engine operates entirely locally on your device. Prompt history, inputs, and keystrokes are never stored or transmitted to external servers.

Does Nullgen block access to entire web domains?

No. Nullgen delivers real-time blocking of generative AI input features without restricting overall domain access, allowing websites to remain fully usable.

Which AI platforms are supported by real-time prompt interception?

Nullgen blocks text inputs on major generative AI interfaces including ChatGPT, Claude, Gemini, Copilot, and custom web wrappers.

What features are included in Nullgen Pro?

Nullgen Pro unlocks centralized policy management, permission request approval workflows, zero-touch MDM provisioning, and system-level device enforcement and lockdown.

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Scheduled launch — Sep 9, 2026

Nullgen AI Blocker is listed on AI Kaptan and will enter the daily launch competition on that day. Community upvotes open on launch day.

AI security

Freemium

Nullgen AI Blocker

Nullgen AI Blocker is a zero-configuration extension that intercepts unauthorized generative AI prompts at the keyboard level in real time using 100% on-device processing to combat Shadow AI.

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Rating

Reviews

Upvotes

about 8 hours ago

Listed

AI security

Shadow AI

Data Loss Prevention

Real-time Prompt Prevention

On-device Inference

Cybersecurity

Enterprise Provisioning

Academic Integrity

Browser Extension

Tool information

Provider

Nullgen

Platforms

Browser Extension

Languages

English

Added to directory

about 8 hours ago

Last updated

about 8 hours ago

Rating

Not available

Pricing

Freemium

About Nullgen AI Blocker

What the tool does and who it's for

Nullgen AI Blocker is a lightweight, zero-configuration browser extension designed to intercept and stop unauthorized generative AI prompts at the keyboard level directly before submission. Built to combat Shadow AI and protect sensitive data, it offers always-on protection across major AI web interfaces (including ChatGPT, Claude, Gemini, Copilot, and custom web wrappers) without restricting overall domain access. Operating with 100% on-device processing, Nullgen processes inputs locally to guarantee absolute privacy. The tool serves enterprises safeguarding proprietary company data, educators enforcing academic integrity, and families managing household screen habits. An upgraded Pro version introduces centralized policy management, zero-touch MDM provisioning (via tools like Microsoft Intune and Google Workspace), permission request workflows, and device lockdown mechanisms that disable native browser AI and private browsing modes.

Key capabilities

Real-Time Prompt Interception: Instantly blocks text inputs on major generative AI interfaces using an in-line overlay.

100% On-Device Processing: Analyzes prompts locally to ensure text and keystrokes never leave your computer.

Zero-Account Required: Operates immediately upon installation out of the box without requiring setup or account creation.

Centralized Policy Management: Manage access gate policies and rules across fleet devices via a web dashboard.

Permission Request Workflows: Enables users to request temporary or permanent access to specific AI tools with direct admin approval routing.

Zero-Touch MDM Provisioning: Automatically force-installs and enrolls fleet devices via Group Policy (GPO) or MDM tools like Microsoft Intune, Jamf, Kandji, and Google Workspace.

Device Enforcement & Lockdown: System-level policy pins extension to browser, preventing removal or bypass while disabling native browser AI and private browsing modes.

Granular Domain Protection: Disables generative AI features on target websites while keeping the main websites fully accessible.

Pricing

Freemium — plans below

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