Command-Line Help for rein

This document contains the help content for the rein command-line program.

Command Overview:

• rein↴
• rein check↴
• rein run↴
• rein eval↴
• rein step↴
• rein describe↴
• rein graph↴
• rein debug↴
• rein watch↴
• rein list↴
• rein show↴
• rein serve↴
• rein agent-context↴
• rein hook↴
• rein install↴
• rein uninstall↴
• rein update↴
• rein lsp↴
• rein dap↴

rein

A small language for agent decision flows

Usage: rein <COMMAND>

Subcommands:

• check — Check a project directory, or one .rein file, and print diagnostics
• run — Run a flow as a live process. Writes one step per line, reads one answer per line on stdin
• eval — Evaluate one function, for debugging. Agents use rein run or rein step
• step — Step the whole flow from main. This is the agent-facing interface: answer one key per call
• describe — Print a function's schema as JSON
• graph — Print the program graph: functions, questions, branches, outcomes, and hand-offs. With answers, mark the path the flow takes. The graph shows functions, not calls: a function called several times with await is marked with the answers of its first call
• debug — Debug a program in the browser: set inputs and answers, step through, and watch the path the flow takes
• watch — Show the agents that use rein now: their programs, answers and the step each run waits on, in a browser page. The flow graph shows functions, not calls: a function called several times with await is marked with the answers of its first call
• list — List the programs visible from here, as ls lists files: names, or -l for details. Operands are name globs
• show — Print a program's source: its manifest and every .rein file
• serve — Serve the agent interface. Holds live runs in memory
• agent-context — Print the block an agent needs to use the visible flows
• hook — The agent hook entry point. Reads one event on stdin. Run by the agent, not by hand
• install — Install a program package: runs pnpm add with these arguments
• uninstall — Remove an installed program package: runs pnpm remove with these arguments. -g picks the user folder
• update — Update installed program packages: runs pnpm update --ignore-scripts with these arguments. -g picks the user folder
• lsp — Run the language server on stdio
• dap — Run the debug adapter on stdio (Debug Adapter Protocol). The VS Code extension starts it