* feat(orchestrator): reuse existing same-profile session on workflow step switch
When a workflow step transition needs a different agent profile, look up
an existing session on the same task that already uses the target profile
and promote it back to primary instead of creating a fresh one. Reuses
COMPLETED and FAILED sessions (CANCELLED stays excluded — explicit user
stops shouldn't be auto-revived).
Backend (event_handlers_workflow.go):
- findReusableSessionForProfile: most recently updated session matching
the target profile, skipping CANCELLED.
- reuseSessionForStep: promotes the session to primary; if terminal,
revives via reviveReusedSession.
- reviveReusedSession: distinguishes "previously launched" (has
executors_running record -> flip to WAITING_FOR_INPUT, lazy-resume via
ResumeSession with stored token) from "never launched" (no record ->
flip to CREATED so autoStartStepPrompt routes through
StartCreatedSession for a full fresh launch). Clears stale
ErrorMessage/CompletedAt so the UI stops surfacing prior failures.
- createNewSessionForStep + completeAndStopSession: shared helpers.
Backend (task_operations.go):
- StartCreatedSession no longer calls processOnTurnStartViaEngine.
User-initiated messages already fire on_turn_start in
dispatchPromptAsync. Workflow-driven auto-start prompts arrived
because the workflow just transitioned us into this step via
on_turn_complete; firing on_turn_start again cascades the workflow
back out and the redirect-to-active-session logic delivers the prompt
to the wrong session's agent.
Frontend (web):
- task.updated handler follows focus to the new primary when the user
is viewing the task and was sitting on the previous primary.
- pinnedSessionId tracks user-initiated session selection
(setActiveSession sets it; setActiveSessionAuto leaves it alone).
The terminal-handoff branch in maybeAdoptSessionOnTransition skips
replacement when the terminating session matches the pin, so manually
clicking a session no longer yanks focus back to the workflow primary
each time the pinned session terminates.
Tests:
- TestSwitchSessionForStep_ReusesExistingProfileSession (never-launched).
- TestSwitchSessionForStep_ReusesPreviouslyLaunchedSession (launched).
- TestSwitchSessionForStep_ReusesFailedSession (FAILED reuse + cleanup).
- tasks.test.ts: focus-follow behavior across 4 scenarios.
- agent-session.test.ts: pinnedSessionId guard plus migration to
setActiveSessionAuto for WS-driven adoption.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* feat(orchestrator): deferred task move with hand-off prompt + boot/turn-end event split
Adds move_task_kandev MCP tool that lets a workflow agent (e.g. QA at "Review")
move a task to another step with a prompt for the receiving agent. The move is
queued as a PendingMove and applied on the calling agent's turn-end so on_enter
processing doesn't race the still-running turn.
Also splits agent.ready into agent.boot_ready + agent.ready at the lifecycle
layer. Previously both signals shared one event and the orchestrator
disambiguated them via a resumeInProgressSessions flag — which had a race
when the boot signal arrived before persistResumeState wrote state=STARTING,
causing the boot to fire on_turn_complete against the just-revived step and
ping-pong the task forward through the workflow.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: address PR #743 review feedback (Greptile + CodeRabbit)
Backend:
- isTransientPromptError no longer treats ErrExecutionNotFound as transient,
preventing executeQueuedMessage from infinite-requeueing on permanent
missing-execution errors. autoStartStepPrompt's explicit errors.Is check
before the transient branch keeps the recovery path working (Greptile P2 #1)
- applyPendingMove drains the orphaned hand-off prompt on ApplyTransition
failure so it can't be misdelivered to the source step on a future turn
(Greptile P2 #2)
- handleMoveTask returns errors instead of panicking when messageQueue is
nil; queueMoveTaskPrompt returns an error so the deferred path fails fast
if the queue can't accept the prompt (CodeRabbit CR-2)
- handleMoveTask rejects when no primary session exists and a hand-off prompt
is required, instead of silently dropping it (CodeRabbit CR-3)
- autoStartStepPrompt preserves attachments from queued messages (was: silently
dropped); attachment-only messages are no longer skipped; the fallback path
also forwards attachments (CodeRabbit CR-5)
- applyPendingMove reinserts the pending move on early failure paths (config
missing, task/step load errors) so a future turn-end retries naturally
(CodeRabbit CR-6)
- registerKanbanTools split into 3 helpers (list/profile/task) to satisfy
backend function-size lint limits (CodeRabbit CR-1)
Web:
- maybeAdoptSessionOnTransition's auto-adopt path also checks pinnedSessionId
to handle the reverse-event-ordering race (old COMPLETED arrives before new
STARTING) — pinned sessions are no longer yanked off the user. Regression
test added (CodeRabbit CR-7)
Tests:
- mockAgentManager records (executionID, prompt) pairs; new helper
capturedPromptsForExecution actually filters by exec ID instead of
returning all captured prompts (CodeRabbit CR-4)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix(web): respect pinned session in primary-follow-focus path
When the user clicks a session, setActiveSession sets pinnedSessionId. If a
workflow profile switch then updates the task's primarySessionId while the
user happens to still be on the previous primary, the focus-follow block in
tasks.ts was calling setActiveSessionAuto(taskId, newPrimary) and silently
overriding the explicit pin. Add pinnedSessionId !== previousPrimary as a
fifth condition. Regression test in tasks.test.ts covers exactly this
sequence.
Addresses Greptile P1 on PR #743.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: address CodeRabbit review on PR #743 (3 new comments)
- handleMoveTask idle path now rolls back the queued hand-off prompt when
taskSvc.MoveTask fails, so a "you were moved..." message can't be delivered
on a future turn for a transition that didn't actually happen. Added
TakeQueued to the MessageQueuer interface to support this.
- lookupSession now returns (*models.TaskSession, error) so callers can
distinguish a backend lookup failure from a legitimate "no primary session"
state. handleMoveTask maps the error case to ErrorCodeInternalError instead
of collapsing it into ErrorCodeValidation.
- queueMoveTaskPrompt returns errors instead of log-and-continue (signature
change already shipped); existing tests updated to reflect the new contract.
- Refactored TestPendingMove_ReviewToInProgress_OneTransitionOnly: the
~280-line monolithic test is now split into a pendingMoveScenario builder
+ assertion helpers, each well under the 80-line / 50-statement lint limit.
All 14 review threads resolved.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix: relax move_task_kandev prompt requirement; fix CI lint
CI surfaced two issues after rebasing onto main:
- nestif lint warning on autoStartStepPrompt's queued-message merge block.
Extracted the take-and-merge logic into takeAndMergeHandoffMessage helper,
flattening the nested conditionals.
- E2E test settings/config-management 'agent can move a task to a different
step' failed because my CR-3 fix made the move_task_kandev prompt parameter
required. That broke admin/config-mode moves where there's no agent to
hand off to. Made prompt optional: when supplied AND the source session
is mid-turn, the deferred-move flow runs (queue prompt + record
PendingMove); otherwise just move the task. Refactored handleMoveTask
into deferMoveTaskWithPrompt and applyMoveTaskImmediate to keep each
function under the 80-line lint limit.
Tool descriptions in mcp/server/server.go and mcp/server/config_handlers.go
updated to reflect prompt's now-optional status. moveTaskHandler in
config_handlers.go forwards prompt only when set.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
* fix(mcp): treat 'no primary session' as a not-found, not an internal error
GetPrimarySessionByTaskID returns a plain error string ("no primary session
found for task: <id>") when the repo has no rows. My CR-B refactor was
treating ALL lookup errors as ErrorCodeInternalError, which broke the E2E
test 'agent can move a task to a different step' (config-mode move on a
freshly-created task that has no agent yet).
Match the not-found message and return (nil, nil); only real backend
failures bubble up as InternalError. Distinguishing properly with
errors.Is would require an exported sentinel that doesn't exist; matching
the noRowsErr substring is the pragmatic fix.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---------
Co-authored-by: Kandev Agent <agent@kandev.dev>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Kandev
Manage and run tasks in parallel. Orchestrate agents. Review changes. Ship value.
Workflows | Roadmap | Contributing | Architecture | Discord
What
Organize work across kanban and pipeline views with opinionated workflows and execute multiple tasks in parallel. Assign agents from any provider, and review their output in an integrated workspace - file editor, file tree, terminal, browser preview, and git changes in one place. Terminal agent TUIs are great for running agents, but reviewing and iterating on changes there doesn't scale.
Run it locally or self-host it on your own infrastructure and access it from anywhere via Tailscale or any VPN.
Open source, multi-provider, no telemetry, not tied to any cloud.
Vision
Humans stay in control. Define tasks, build agentic workflows with gates, review every change, decide what ships.
- Review-first - Humans support production systems. We need to understand (yet) and trust the code that gets deployed.
- Your workflow - Every team is different, and not every developer uses AI the same way. Define workflows once, share them across the team, and give everyone a consistent process for working with agents - regardless of experience level.
- Remote agents - Running multiple agents on a large codebase can quickly saturate a local machine. The goal is a single control plane: offload execution to servers, orchestrate from anywhere, including your phone.
Features
- Multi-agent support - Claude Code, Codex, GitHub Copilot, Gemini CLI, Amp, Auggie, OpenCode
- Parallel task execution – start and manage multiple tasks from different sources simultaneously, boosting productivity with AI agents
- Integrated workspace - Built-in terminal, code editor with LSP, git changes panel, embedded vscode and chat in one IDE-like view
- Kanban task management - Drag-and-drop boards, columns, and workflow automation
- Agentic workflows - Multi-step pipelines that mix-and-match agents per step - for example, Claude Code Opus to design a plan, GitHub Copilot Sonnet to implement it, and Codex GPT 5.4 to review the changes. See docs/workflows.md
- Sub-tasks - Agents can spawn sub-tasks that resume from the parent task's session. Useful for splitting a task that has grown too big, or producing several PRs from the same starting point.
- CLI passthrough - Drop into raw agent CLI mode for direct terminal interaction with any supported agent, leverage the full power of their TUIs
- Workspace isolation - Git worktrees prevent concurrent agents from conflicting
- Flexible runtimes - Run agents as local processes, in isolated Docker containers or in remote executors like sprites.dev
- Session management - Resume and review agent conversations
- Stats - Track your productivity with stats on the completed tasks, agent turns, etc
Supported ACP Agents
| Agent | Protocol |
|---|---|
| Claude Code | ACP (@zed-industries/claude-agent-acp) |
| Codex | ACP (@zed-industries/codex-acp) |
| GitHub Copilot | ACP |
| Gemini CLI | ACP |
| Amp | ACP (amp-acp) |
| Auggie | ACP |
| OpenCode | ACP |
All agents communicate via ACP (Agent Client Protocol). Some agents support ACP natively, while others use ACP adapter packages that bridge their native protocols. CLI Passthrough mode is also available for direct terminal interaction with any agent CLI. If your agent isn't supported yet, open an issue or submit a PR with the integration. See Adding a New Agent CLI for a step-by-step guide.
Bring your own TUI agents
There is support for running any agent as TUI inside a terminal. Just add the cli command in the agent profile settings and the task will start the agent inside a PTY terminal instead of using ACP.
Supported Executors
| Executor | Description |
|---|---|
| Local Process | Runs the agent as a local process on the host machine |
| Docker | Runs the agent in an isolated Docker container |
| Sprites | Runs the agent in a remote cloud environment via sprites.dev |
Each executor uses git worktrees for workspace isolation, preventing concurrent agents from conflicting.
Quick Start
NPX (recommended)
npx kandev
This downloads pre-built backend + frontend bundles and starts them locally. The worktrees and sqlite db will be created in ~/.kandev by default. Should work on macOS, Linux, and Windows (WSL or native).
From Source
# Clone the repository
git clone git@github.com:kdlbs/kandev.git
cd kandev
# Start in production mode
make start
Prerequisites: Go 1.26+, Node.js 18+, pnpm, Docker (optional - needed for container runtimes)
High level architecture
graph LR
UI[Web UI] --> Backend
Backend["Backend (Orchestrator)"]
Backend --> W1 & W2
subgraph W1[Local Process]
Agent1[Agent CLI] --- WT1[Worktree]
end
subgraph W2[Docker Container]
Agent2[Agent CLI] --- WT2[Worktree]
end
We also want to add support for these remote runtimes:
- Remote SSH - run agents on remote servers over SSH, using docker or local processes with workspace isolation
- K8s operator - run agents in a Kubernetes cluster, with auto-scaling and resource management.
Development
Project Structure
apps/
├── backend/ # Go backend (orchestrator, lifecycle, agentctl, WS gateway)
├── web/ # Next.js frontend (SSR, Zustand, real-time subscriptions)
├── cli/ # CLI tool (npx kandev launcher)
└── packages/ # Shared UI components & types
Prerequisites
- Go 1.21+
- Node.js 18+
- pnpm
- Docker (optional)
Running Dev Servers
# Start everything (backend + frontend with auto ports)
make dev
# Or run separately
make dev-backend # Backend on :38429
make dev-web # Frontend on :37429
Testing & Linting
make test # Run all tests (backend + web)
make lint # Run all linters
make typecheck # TypeScript type checking
make fmt # Format all code
Pre-commit Hooks
# Install pre-commit (https://pre-commit.com/#install)
pipx install pre-commit
# Install git hooks
pre-commit install
Comparison to Other Tools
There are a few similar tools in this space, and new ones appearing everyday. Here's what sets this one apart:
- Server-first architecture - Not a desktop app. Runs as a server you can access from any device, including your phone. Start a task away from your computer and check in on it later.
- Remote runtimes - Run agents on remote servers and Docker hosts, not just your local machine.
- Multi-provider - Use Claude Code, Codex, Copilot, Gemini, Amp, Auggie, and OpenCode side by side. Not locked to one vendor.
- CLI passthrough and chat - Interact with agents through structured chat messages or drop into raw CLI mode for full agent TUI capabilities.
- Open source and self-hostable - No vendor lock-in, no telemetry, runs on your infrastructure.
Contributing
Contributions are welcome! Please read CONTRIBUTING.md before opening a PR.
See the issue tracker for open tasks, or join our Discord to chat with maintainers and other contributors.
Acknowledgments
Built with these excellent open-source projects:
Monaco Editor · Tiptap · xterm.js · dockview · CodeMirror · dnd-kit · Mermaid · Recharts · TanStack Table · Zustand · Shadcn/UI · Radix UI · Tailwind CSS
