JuCode CLI

JuCode CLI is a lightweight coding agent for fast, practical repository work. It is designed to give the model strong tools while avoiding a heavy agent framework, rigid workflow, or long harness prompt.

What JuCode Focuses On

JuCode keeps the coding loop compact and direct:

• Ready-to-use coding loop
  A compact TUI is available by default for interactive repository work.

• Context-efficient tools
  Tooling is designed to preserve useful context while keeping the active conversation small. This includes projected tool output, saved full oversized results, file outlines, long-running shell sessions, checkpoints, and compacted conversation history.

• Lightweight subagents
  Subtask delegation is handled through one generic spawn_subagent tool instead of many fixed roles.

• Optional skills
  Skills work as optional instructions. They can be used as discoverable commands for one-off tasks, or pinned with /pin <skill> when a skill should remain in the current session context.

• Extension support without MCP context bloat
  Extensions can expose tools directly. Lazy extensions expose only extension_list_tools and extension_call, keeping extension access available without loading unnecessary context.

• Headless JSONL mode
  JuCode can run without the TUI for scripts and external harnesses:

  jucode --headless "task"

Design Direction

JuCode borrows ideas from modern coding agents and harnesses, including:

• compact tool result projection
• branchable sessions
• lightweight subtask delegation
• machine-readable event streams

The implementation keeps these ideas small and direct so the model stays in control of the work.