Terrapin
MITSwift
Terrapin is a privacy-first local agent using the ACP server protocol. Written in Swift; designed primarily for Xcode, this open-source project lets you run your own local LLM agent in Xcode and other IDEs. Build iPhone apps without a Claude subscription!
- Runs locally on your Mac (or PC) without bills, internet, or telemetry
- Speaks the Agent Client Protocol (ACP) over stdin/stdout
- Works with any OpenAI-compatible endpoint: llama.cpp, LM Studio, mlx, or Splash
- Supports skills, vision, session persistence, and context compaction
Calgary
MITSwift
A static site generator where the build pipeline is Swift code. Built with Terrapin and local AI. Write your content in Markdown, define your build as a few lines of Swift, and let Calgary assemble the rest.
- No config files — your build is Swift code in your repo
- Markdown pages with YAML frontmatter, HTML templates, and reusable components
- Built-in localization, sitemap generation, and link checking
- We used this framework to build this very website and there's a SKILL available for Terrapin