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An efficient macOS app that continuously captures your screen activity, summarizes it with an LLM, and makes it available for other local tools.

66 starsSwift

ContextD – OCRs your screen activity, use it in AI agents via local API

by thesophiaxu·Mar 20, 2026·2 points·1 comment

AI Analysis

●●SolidShip ItDark Horse

Open-source Rewind alternative with diff-based OCR and a local HTTP API for agents.

Strengths
  • Diffing screenshots before OCR reduces compute cost significantly versus full-frame processing.
  • Local SQLite storage ensures privacy while enabling fast full-text search.
  • Exposes HTTP API for agent context enrichment, not just human reading.
Weaknesses
  • Author admits vibe-coded in 2 days, suggesting stability or maintenance risks.
  • Requires external LLM API for summaries, breaking full local-offline capability.
Category
Target Audience

Developers building AI agents, privacy-conscious macOS users

Similar To

Rewind.ai · Limitless · Mem.ai

Post Description

mostly vibe-coded in 2 days, only contributed ~5 core insights, the rest is all opencode (trying it for the first time, it was ok)

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