Stealth AI assistant for discreet, real-time help in meetings
Experience ZNinja, developed by gajju44, a Windows utility designed to provide discreet, real-time AI assistance during virtual meetings and technical interviews. The app integrates low-level Windows hooks and "Shadow Circuit" technology to present an invisible, system-level chatbot that answers queries, executes code, and verifies test cases without appearing in capture streams. It uses Win32 display affinity, DPAPI-encrypted local credentials, multi-key rotation, and an interactive canvas. Engineers, students, and professionals gain auditable, local control during live coding and research sessions.
How the app stays hidden during screen sharing
The tool uses native display APIs to avoid capture. It applies the Win32 SetWindowDisplayAffinity flag (WDA_EXCLUDEFROMCAPTURE), which instructs the Desktop Window Manager to exclude the app window from screen-capture and recording. That mechanism explains why common capture tools such as Zoom, Microsoft Teams, and OBS do not include the interface in shared streams, making the program effectively invisible to standard screen-recording workflows.
Does it protect API keys and conversation data locally?
Local-first storage and OS-level encryption reduce external exposure. The app stores credentials with the Windows Data Protection API (DPAPI) and operates without requiring an account, which means keys and local data remain on the machine rather than being forwarded to developer servers. The project is also open-source and auditable, allowing technical users to inspect how secrets and transcripts are handled.
Can it assist with live coding and keep sessions running?
Designed for real-time technical support and continuity. The tool integrates Google Gemini via the user’s API key for low-latency responses, offers an interactive canvas plus built-in code execution for test-case verification, and includes a multi-key rotation engine to manage API rate limits and sustain sessions without interruption.
Is it suited for casual users or targeted at technical professionals?
The tool targets developers and technically minded users. The stated audience is software engineers, students, and professionals who need discreet, live assistance. It installs on current Windows desktop systems and is distributable through the Windows Package Manager, which fits command-line oriented setups; casual users may find the system-level operation and configuration choices more appropriate for users with technical experience.
The app is a practical option for technically proficient users, with one clear trade-off
The app is a practical option for technical professionals who need discreet, real-time AI help during live sessions; its open-source, local-first design supports auditability and local control. The trade-off is its capture-exclusion capability, which creates compliance and policy considerations in monitored or managed environments. Test behavior in a rehearsal session and confirm organizational rules before relying on the tool in formal evaluations.
Pros
Win32 display affinity excludes the interface from screen capture
DPAPI-encrypted, local-first credential storage
Built-in code execution for real-time testcase verification
Multi-key rotation maintains API session continuity
Cons
Stealth capture exclusion can raise compliance considerations
Targeted at technical users, not casual audiences
Depends on user-provided API keys for AI responses
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