subcog
Active·★ 29·MIT·Updated 2026-08-03
Subcog is a persistent memory system for AI coding assistants that captures decisions, learnings, and context from coding sessions. It features a single-binary distribution, three-layer storage architecture (SQLite, FTS5, usearch HNSW), MCP server integration, and Claude Code hooks. It achieves high accuracy on factual recall benchmarks.
#ai#ai-assistant#claude#claude-plugin#cli#developer-tools#embeddings#gemini
01
Features
01Memory capture with automatic embedding generation (384-dimensional vectors)
02Hybrid search combining BM25 text search and vector similarity (RRF fusion)
03SQLite persistence as single source of truth (ACID-compliant)
04MCP server integration for AI agent interoperability
05Claude Code hooks for seamless IDE integration
02
Compatibility
Cargo
Cargo
Verified via docs
Homebrew
Homebrew (macOS/Linux)
Verified via docs
Docker
Docker (Linux)
Verified via docs
Binary
Binary download
Verified via docs
npm/npx
npm/npx (fallback)
Verified via docs
03
Quick start
1
$ cargo install subcog
04
Use cases
↳Capturing and recalling technical decisions during development
↳Surfacing relevant past context when working on similar tasks
↳Maintaining persistent memory across coding sessions for AI assistants
05
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