Anvil

A native macOS agent harness for local and cloud models.
Swift 6 · SwiftUI · Xcode 27

What Anvil does

Chat with local and cloud models through providers for OpenAI-compatible endpoints (OpenAI, OpenRouter, NVIDIA NIM, LM Studio, Ollama), plus Anthropic and Google Gemini.
Artifacts: code, Markdown, and HTML outputs with version history.
Quick open: a Spotlight-backed file index for jumping to any file in the project.
Computer use: a WebKit browser and Accessibility-based desktop control, with approval prompts before each action.
Git status and a PTY terminal beside the chat.
MCP tools: connect Model Context Protocol servers and approve each tool call.
Keychain for API keys, and themes including a Matrix Techy mode.

Milestone	State
v1: app runs the embedded OpenCode CLI server	Shipping
v2.0: native Swift session engine (no CLI dependency)	In progress
Notarized DMG and auto-update	Planned

Requirements: macOS with Xcode 27 (Swift 6 toolchain).

git clone https://github.com/noktirnal42/Anvil.git
cd Anvil
swift build

To run the app, open Anvil/Package.swift in Xcode 27 and select the Anvil scheme.

Path	Purpose
`Anvil/Sources/AnvilApp`	SwiftUI app shell and views
`Anvil/Sources/AnvilKit`	Engine, providers, storage, and tooling
`Anvil/Tests`	Test target
`Anvil/script`	Build, embed, and DMG scripts
`branding/`	Icon and social-card master artwork (SVG)
`docs/`	Marketing site (GitHub Pages source)
`SPEC.md`, `SPEC-v2.0.md`	Product and engine specifications