BlindSpot

AI answers.
Invisible.

Select text in any macOS app. Press ⌘⇧Space. Get an AI answer in a floating overlay that no screen recorder can capture.

↓ Download for MacView on GitHub ↗
v2.4.1 · macOS 26+|Universal binary|Free & open source
Live overlay demo
Press ⌘⇧Space over selected text
The mitochondria is the powerhouse of the cell. It produces ATP through oxidative phosphorylation, converting nutrients and oxygen into usable chemical energy that fuels virtually every cellular process. Without it, complex life would be impossible.
✦ BlindSpot
✕
Selected text
nutrients and oxygen into usable chemical energy that fuels virtually every cellular process
Response
Screen capture exclusion

What they see vs what you see.

The overlay uses NSWindowSharingNone — excluded from the frame buffer at the macOS compositor level, before any recording tool can access it.

Screen Recording Preview
REC

What the recording captures

The mitochondria is the powerhouse of the cell. It produces ATP through oxidative phosphorylation, converting nutrients and oxygen into usable chemical energy that fuels virtually every cellular process.
OVERLAY NOT VISIBLE IN RECORDING
BlindSpot's overlay is absent from every captured frame. Observers see only the underlying application.

What you see on screen

✦BlindSpot
✕
Response
This process is called oxidative phosphorylation. The electron transport chain creates a proton gradient across the inner mitochondrial membrane, which drives ATP synthase to produce ATP — the universal energy currency of the cell.
Excluded from screen capture at OS compositor level
AI providers

Seven providers. One hotkey.

Provider
Default model
Vision
Free
OpenAI
OpenAI
GPT-4o
—
Anthropic
Anthropic
Claude Sonnet
—
Gemini
Gemini
Gemini 2.5 Flash
DeepSeek
DeepSeek
V4 Flash
—
Grok
Grok
Grok 3
—
OpenRouter
OpenRouter
100+ models
—
Ollama
Ollama
Local models
—

Free = no API key required (Gemini free tier / DeepSeek free tier / Ollama runs locally)

Features

Everything you need. Nothing you don't.

Invisible overlay
Excluded from every screen recorder, screenshot, and video call via NSWindowSharingNone — not a trick, absent from the frame buffer.
Visual context
Press ⌘⇧⌥Space to capture a screenshot around your selection and send it to the AI. Useful for UI, diagrams, tables, and code layout.
AI profiles
Create multiple profiles each with their own provider, model, system prompt, temperature, and token limit. Switch from the menu bar.
Conversation history
Every exchange is saved, searchable, and grouped by date. Organise into folders. Export any conversation as Markdown or JSON.
Works in every app
Reads selected text via the macOS Accessibility API — bypasses JavaScript copy handlers. Works in browsers, terminals, native apps, PDFs.
Keys stay on your Mac
API keys stored at ~/.config/blind-spot/keys/ with mode 0600. No cloud sync, no telemetry, no account required.
Auto-updates
Sparkle checks for updates in the background. No manual downloads.
Configurable hotkeys
All shortcuts are rebindable in Settings. Default is ⌘⇧Space, but any combination works.
Free & open source · MIT License

Get BlindSpot
in 30 seconds.

macOS 26 or later · Universal binary (Apple Silicon + Intel) · Signed & notarized

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