Command-line Reference

Every subcommand the once binary exposes, with its synopsis, options, and arguments. Use the sidebar to jump to a specific command.

Commands

• once auth: Authenticate with a configured provider
• once build: Build a declared target
• once cache: Cache management
• once edit: Mutate workspace manifests
• once exec: Execute a literal action through the cache
• once mcp: Expose Once's graph and memory queries to a coding agent
• once query: Query the typed build graph
• once run: Run a declared target
• once runtime: Runtime session inspection and control
• once test: Test a declared target
• once toolchain: Inspect the project toolchain contract