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Show HN: Canban – Kanban and Workflow and Herdr Workbench for CLI Agents

Developer JJy released Canban, an open-source macOS 13.0+ (Apple Silicon) Kanban and workflow workbench for running native CLI coding agents such as Claude Code, Codex, Antigravity (`agy`), and Cursor CLI inside persistent PTY sessions. Canban combines a Kanban board with per-Card Git worktrees, visual or YAML workflow automation, and serialized FIFO queue merges with automatic `@merger` conflict resolution, built in Rust on `longbridge/nsh` and `libghostty-vt` over local or remote SSH `herdr-core`; it is installed via `curl -fsSL https://canban.dev/install.sh | bash` and licensed under Apache 2.0.

read2 min views3 publishedNov 15, 2026
Show HN: Canban – Kanban and Workflow and Herdr Workbench for CLI Agents
Image: Michielbdejong (auto-discovered)

Focus on Human Context.

Canban = Kanban + Workflow + Herdr

English · 简体中文

Website (canban.dev) · Philosophy · Highlights · Installation · Related Software · License

  1. Kanban organizes human context — specs,#Card references, screenshots,@Agent discussions, structured reports, and review gates stay together on each Card.
  2. Herdr drives native Agent CLIs with minimal interference — run Claude Code, Codex, Antigravity (agy ), Cursor CLI, or custom CLIs directly inside persistent PTYs with native TUIs, permissions, MCPs, skills, and session resume intact.
  3. Most work stays on Kanban and dispatches via workflows — shape scope and review diffs on the Board while workflows isolate Git worktrees, dispatch agents, and queue merges automatically.

Move Cards across customizable stages (Backlog → Develop → Review) with live @developer, @reviewer, and @merger status capsules right on the Board. Each Card combines Markdown specs, pasted screenshots, #Card / #tag links, Cmd+O Quick Open, and GitHub Issue/PR sync with approval gates for external PRs.

Automate column transitions, @agent runs, custom scripts, conditions, human approvals, and serialized FIFO Queue Merge (deliver with automatic @merger conflict resolution) inside isolated per-Card Git worktrees — authored visually in Workflow Studio, in YAML, or via Edit with agent.

Press Cmd+J on any Card for a side-by-side terminal split or open the dedicated Terminals workspace. Built in Rust with longbridge/nsh (AppKit/Metal) and libghostty-vt over local or remote SSH herdr-core, running agent PTYs survive app restarts and upgrades across 17 built-in dark themes.

Prerequisites: macOS 13.0+ (Apple Silicon), git, at least one native Agent CLI ( claude, codex, agy, cursor-agent, etc.), and Herdr Core ( hc) (Canban guides one-click hc setup on first launch if missing).

curl -fsSL https://canban.dev/install.sh | bash

Installs or live-upgrades /Applications/Canban.app without interrupting active herdr-core sessions, and automatically handles macOS Gatekeeper quarantine removal and local ad-hoc code signing.

Canban builds directly on these open-source projects and assets (full attributions and licenses are preserved in THIRD_PARTY_NOTICES.md):

  • Herdr (herdr-core) — Persistent PTY session supervisor and JSON-RPC runtime powering native Agent CLIs and interactive terminals (Apache-2.0)
  • Sheprd — Terminal VT/frame/input and subscription utility patterns referenced during integration (Apache-2.0)
  • NSH (longbridge/nsh) — Native macOS AppKit/Metal Rust UI framework (Apache-2.0)
  • Ghostty (libghostty-vt) — Commit-pinned VT parser and terminal emulation engine (MIT)
  • iTerm2-Color-Schemes (MIT) — 16 classic terminal color palettes including Monokai, Dracula, Nord, Tokyo Night, and Catppuccin Mocha
  • Lucide (ISC),Lobe Icons (MIT), and**Primer Octicons** (MIT) — UI and provider icons

Copyright 2026 JJy <jjyruby@gmail.com>.

Licensed under the Apache License, Version 2.0.

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