- History expansion
- Multiline input
- Keybind configuration (inputrc)
- Markdown rendering for agent text responses in REPL
- Agent structured output
- Parse time type checks
- Runtime type validation for tool parameters
- Type checking for tool return values
- Type annotations for variables and functions
- Type inference improvements
- Package management (optional)
- HTTP client
- JSON/CSV parsing
- Timezone support for DateTime
- File I/O helpers
- TreeSitter syntax highlighting
- Language Server Protocol (LSP)
- Built-in formatter
- Debugger
- Bytecode compilation
- VM optimization
- Caching and precompilation
- concurrency support
- Pattern matching
- Improve default agent system prompt (context)
- Loading AGENTS.md
- Skills
- Optimize startup time
- Limit total history size
- Official Homebrew
- Apt
- Nix
- Starship