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v2.9.0 — Intelligence Layer + Pro Adaptive Intelligence

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@yvgude yvgude released this 29 Mar 19:05
· 1999 commits to main since this release
v2.9.0
b9d7ece

What's New

Intelligence Layer Rebranding

lean-ctx is now positioned as The Intelligence Layer for AI Coding — not just an MCP tool, but the compression layer between your AI and the LLM. Website, README, and all messaging updated.

Pro Adaptive Intelligence ($9/mo)

  • lean-ctx upgrade — one-command Pro subscription via Stripe
  • Adaptive compression models trained on community data
  • Everything automatic: models sync daily, stats upload in background
  • Cloud dashboard at leanctx.com/dashboard

Critical Fixes

  • #29 — lean-ctx setup no longer overwrites existing editor configs (OpenCode, Cursor, Zed, VS Code) when JSON parsing fails
  • #28 — lean-ctx read handles non-UTF-8 files gracefully (lossy decoding)
  • Windows update — deferred binary replacement when MCP server locks the executable
  • Compression regression — static rule-based prediction fallback for all users
  • Cost constants — unified to $2.50/M input + $10/M output everywhere

New Features

  • BM25 semantic code search (ctx_semantic_search, ctx_intent)
  • Information Bottleneck filter for scientific compression
  • MCP Unified Mode (LEAN_CTX_UNIFIED=1) — 24→5 tools, saves ~18K tokens
  • mypy compression pattern + pytest direct routing
  • Cloud backend with 12 API endpoints (auth, stats, Pro models, Stripe)

Install / Update

# Update existing installation
lean-ctx update

# Or fresh install
curl -fsSL https://leanctx.com/install.sh | sh
brew upgrade lean-ctx
cargo install lean-ctx
npm update -g lean-ctx-bin

Binary

  • lean-ctx-darwin-arm64 — macOS Apple Silicon (this release)
  • Windows and Linux binaries available via cargo install lean-ctx

Full changelog: https://github.com/yvgude/lean-ctx/blob/main/CHANGELOG.md

Full Changelog: v2.8.2...v2.9.0

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