Skycode
MaintenanceAI Code Editor
VS Code fork with a built-in AI agent. 30+ agent tools, inline diff with per-message snapshots, semantic code search, 40+ model providers, MCP integrations, voice input.
Key features
- Snapshot-based inline diff engine (217 unit tests)
- AI agent supporting 40+ providers (Anthropic, OpenAI, local LLMs)
- Semantic search via transformers.js + tree-sitter + SQLite
- 5 working modes (Act, Plan, Debug, Ask, Edit)
Architecture
Snapshot-based inline diff: each AI message creates a rollback point holding the contents of all changed files BEFORE the change is applied. This makes per-block accept/reject possible and lets the user roll the editor back to any chat message without writing to disk until confirmed.
The AI agent is built on a unified tool interface (30+ tools) and supports 40+ model providers: Anthropic, OpenAI, Google, DeepSeek, Qwen, local LLMs via Ollama. The agent runs in 5 modes (Act, Plan, Debug, Ask, Edit), each with its own toolset and system prompt.
Semantic code search runs locally: transformers.js computes embeddings, Tree-sitter parses the AST, SQLite stores the index. Search is by meaning, not by substring — without sending code to the cloud.
The diff engine is covered by 217 unit tests: snapshot creation, correctness of per-block accept/reject, restoration on rollback, edge cases with concurrent changes. The architecture is decoupled from the UI and tested without DOM.