Nikcli

Nikcli is a fork of OpenCode — the open source coding agent. AI-powered development tool: CLI, TUI, server, web, mobile, bots.

Nikcli is a fork of OpenCode, the open source coding agent (the repo previously lived at sst/opencode — same project, same org). All credit for the original project goes to the OpenCode authors and its community — nikcli exists only because that work is open source, and every part of nikcli that came from OpenCode remains theirs.

This fork is maintained by nikomatt69. On top of the OpenCode base, nikcli adds new commands (goal, routine, mobile, ads, heap, locale, brain-model / image-model / speak-model, workspace-serve, …), ACP integration, the Loops/Goal/Routines system, mobile pairing with a dedicated Expo app, the web companion UI, multi-channel bots, the Session v2 engine, and Effect Schema throughout the HTTP contract.

Nikcli is not affiliated with, endorsed by, or supported by the OpenCode project. Please report nikcli issues here, not upstream. Full credits, history, and the original license live in the upstream repository: https://github.com/anomalyco/opencode.

• Upstream project: OpenCode — github.com/anomalyco/opencode
• Maintainer of this fork: nikomatt69 — GitHub · X
• Version: 1.149.0 · Package manager: bun@1.4.0
• License: MIT — see LICENSE, which retains the upstream OpenCode copyright.

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Table of contents

1. What nikcli is
2. Installation
3. Build from source
4. Quickstart
5. Monorepo architecture
6. CLI: all commands
7. TUI: terminal user interface
8. Agents and subagents
9. Toolset available to agents
10. Skills
11. Loops, Goal, Routines
12. Providers, models, connectors and MCP
13. Sessions, worktrees, sandboxes, sharing
14. Server, web, mobile, remote control
15. Bots and chat adapters
16. Plugins, skills and TUI sub-plugins
17. Configuration
18. Documentation and resources
19. Credits

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What nikcli is

Reminder: nikcli is a fork of OpenCode. The architecture below — TUI, headless server, tool registry, session engine, plugin runtime — descends from OpenCode's design; credit for it belongs to the upstream project.

Nikcli is not just a CLI to chat with a model: it is a complete agentic platform that orchestrates models, tools, subagents and project context. Its main surfaces:

• Interactive TUI — a full-screen terminal application built on OpenTUI and Solid.js: sessions, turn queues, history, autocomplete, permissions, modal dialogs, remote attach.
• Headless server — HTTP + SSE + WebSocket on Effect HttpApi and Bun.serve, with OpenAPI and a generated TypeScript/JavaScript SDK.
• One-shot CLI — non-interactive execution (run, goal, mission, agent, generate, github, pr, stats, export / import).
• Web companion — SolidStart/Cloudflare UI for sessions and sharing (nikcli web, nikcli companion serve).
• Mobile companion — Expo / React Native app in packages/mobile with QR pairing and nikcli:// deep links.
• Multi-platform bots — unified adapter for Slack, Discord, Microsoft Teams, Google Chat, GitHub Issues, Linear.
• Plugin runtime — plugin installation with hot-reload for TUI, agents and tools (nikcli plug install <mod>).
• ACP server — implements the Agent Client Protocol to integrate with external editors and IDEs (nikcli acp).
• Missions — high-altitude workflows that decompose a goal into milestones, each holding a DAG of features with a validation checkpoint per milestone (nikcli mission). Headless, server-side orchestrator.
• Loops — named, persisted workflows that run an ordered list of stages, each driven by a single goal command (nikcli loop). The headless LoopEngine keeps firing on schedule even when the TUI is closed.
• Observability — OpenTelemetry (OTLP) trace export and a live in-process telemetry panel (configurable through OTEL_EXPORTER_OTLP_ENDPOINT and NIKCLI_DISABLE_OTEL_LIVE).

Everything is orchestrated by an internal event bus, a SQLite/Drizzle persistence layer, and a service architecture built with Effect (typed schema validation, dependency injection, layer composition).

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Installation

The install script downloads release binaries from nikcli.store with GitHub releases as fallback (packages/web/install).

macOS / Linux

curl -fsSL https://nikcli.store/install | bash
nikcli

Windows (PowerShell 5.1+ or pwsh 7+ — curl | bash needs a bash to pipe into, so use this instead):

irm https://nikcli.store/install.ps1 | iex
nikcli

Any platform (npm, pnpm, yarn or bun):

npm i -g nikcli-ai@latest

The install location can be overridden with NIKCLI_INSTALL_DIR (or XDG_BIN_DIR); it defaults to ~/.nikcli/bin on every platform. The PowerShell installer also reads NIKCLI_VERSION to pin a version and NIKCLI_NO_PATH=1 to leave the user PATH alone.

Alternative install methods handled by nikcli upgrade:

nikcli upgrade --method curl    # standalone installer (install.ps1 on Windows)
nikcli upgrade --method npm     # npm package
nikcli upgrade --method pnpm
nikcli upgrade --method bun
nikcli upgrade --method brew    # macOS / Linux

Requirements: Node.js or Bun runtime, Git for most VCS flows, gh CLI for nikcli pr and some GitHub integrations.

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Build from source

bun install
bun run --cwd packages/nikcli --conditions=browser src/index.ts

Useful development scripts:

Script	Description
bun run dev	Start the nikcli CLI/TUI from source
bun run typecheck	bun turbo typecheck across the whole workspace
bun run build	Build all packages
bun run web:dev	Dev server for the packages/web site
cd packages/sdk/js && bun script/build.ts	Regenerate the JavaScript SDK after modifying packages/nikcli/src/server/server.ts
cd packages/nikcli && bun run bench	TUI bench (test/bench/viz.tsx)
cd packages/nikcli && bun run sandbox:vercel	Vercel sandbox smoke test

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Quickstart

nikcli                  # opens the TUI in the current directory
nikcli run "..."        # one-shot without TUI
nikcli quickstart       # 60s walkthrough for first-time users
nikcli doctor           # diagnostics: connectivity, config, providers

Connect an LLM provider:

nikcli auth login
# or select from the CLI/TUI with the dedicated dialog

Running nikcli with no arguments opens the TUI, which by default starts a local server in the background and connects to it via WebSocket/SSE. The TUI can also be attached to a remote instance:

nikcli serve --hostname 0.0.0.0 --port 4096
nikcli attach http://other-host:4096

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Monorepo architecture

Bun workspace with centralized version catalog (bunfig.toml, package.json).

Package	Role
packages/nikcli	Core CLI/TUI/server — main application (@nikcli-ai/cli, nikcli binary)
packages/sdk	API SDK generated from OpenAPI (@nikcli-ai/sdk for JS, other languages in packages/sdk/*)
packages/plugin	Plugin system and hooks contract (@nikcli-ai/plugin)
packages/remote	Tunnels, QR pairing, web client for remote attach
packages/companion	Companion UI and companion server routes
packages/terminal-control	Terminal abstraction reused by CLI and IDE
packages/mobile	Mobile Expo / React Native app with realtime SSE
packages/app	Main web app (SolidStart)
packages/web	Documentation site + installer + landing (nikcli.store)
packages/desktop	Tauri desktop app
packages/enterprise	Enterprise SSO / multi-tenant build
packages/cloud	Cloudflare worker (KV, Durable Objects)
packages/slack	Slack Bolt adapter and health check
packages/script	Shared build/release scripts
packages/util	Shared utilities (effect-zod, locale, log, retry, …)
packages/llm	Additional AI SDK adapters (e.g. GitLab)
packages/function	FaaS helpers and queue workers
packages/inference · inference-dashboard	Inference telemetry and dashboard
packages/console	Administration panel
packages/webrenderer · tui-image	Experimental TUI renderers
packages/http-recorder	HTTP recorder for test/replay
packages/containers	Container bundles for deploy
homebrew-tap · infra · nix · script	Packaging and IaC

Internal layout of the core (packages/nikcli/src):

account/        # account management with device code
acp/            # Agent Client Protocol (editor ↔ nikcli)
agent/          # agent system, prompts, generate, subagents
analytics/      # local/aggregated telemetry
auth/           # provider credentials (keychain, file, OAuth)
background/     # background jobs (e.g. TTS, embeddings)
brain/          # brain scheduler (background reasoning)
bus/            # typed global event bus (BusEvent)
chatbot/        # multi-channel bot (chat adapter)
cli/            # command tree, bootstrap, network, UI helpers
command/        # command service (named commands invokable by agents)
config/         # typed config (jsonc) + project config + TUI config
connectors/     # connector service + creds (Linear, GitHub, Slack, …)
database/       # drizzle ORM + migrations
db/             # users, KV, accounts
delegation/     # background subagent runs
effect/         # Effect runtime, layer helpers
file/           # file abstraction (read/write/patch/tree)
filesystem/     # fs helpers
flag/           # environment-variable flags (incl. OTEL/NIKCLI_*)
format/         # formatter (prettier, biome, oxc, …)
git/            # local git operations (status, diff, worktree)
global/         # global paths (~/.config/nikcli)
ide/            # editor integrations (VSCode, Cursor, Zed)
image/          # image tools
installation/   # version, install method, upgrade
interaction/    # user interactions (prompt, confirm, select)
locale/         # localization (language, region, timezone, currency)
loop/           # headless Loop engine (Scheduler + Goal composition)
lsp/            # LSP client for diagnostics and goto
mcp/            # Model Context Protocol (server + client)
mission/        # headless Mission orchestrator (milestones / features / validation)
mobile/         # mobile routines, auth, project detect
monitor/        # background command runner (persistent output)
observability/  # OpenTelemetry (OTLP) export + live telemetry panel
patch/          # unified patch engine
permission/     # permission system (rules, evaluate, ask)
plugin/         # plugin loader and contract
project/        # project, instance, VCS, bootstrap
prompt/         # prompt composition and variants
provider/       # provider registry, auth, transform, models
pty/            # pseudo-terminal reused by the bash tool and TUI
question/       # interactive questions
sandbox/        # sandbox runner (Vercel, Docker, local)
scheduler/      # cron-like scheduler (basis of Loops)
session/        # messages, compaction, revert, prompt, v2
share/          # public/enterprise session sharing
shell/          # shell detection
skill/          # skill discovery and execution
snapshot/       # heap/process snapshot
storage/        # abstract KV/storage
sync/           # workspace sync (projects ↔ server)
tool/           # tool registry (read, write, bash, webfetch, …)
util/           # utilities (log, id, locale, retry, error, …)
workspace/      # multi-project workspace + event server
worktree/       # git worktree management

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CLI: all commands

All main commands (registered in packages/nikcli/src/index.ts):

| Command | Purpose | | ----------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- | ------- | ------------------------------------------------------------------- | ------------------------------------ | | nikcli | Default: opens the TUI. | | nikcli run [message..] | Runs a one-shot prompt non-interactively; supports model variants, agent, session, fork, attachments. | | nikcli goal [condition..] | Works autonomously until a verifiable condition holds (Goal engine with budget and persistent state). | | nikcli mission | Headless Mission orchestrator: new, start, pause, resume, cancel, get, list. | | nikcli loop | Headless Loop engine: create, list, get, run, pause, resume, cancel, delete. | | nikcli routine | Create / list / get / run / pause / resume / delete routines (cron + API trigger). | | nikcli generate | Prints the server OpenAPI spec with JS SDK samples. | | nikcli acp | Starts an ACP (Agent Client Protocol) server for external editors. | | nikcli mcp | Manage MCP servers: add, OAuth auth, list, status, debug. | | nikcli tui (default) · nikcli attach <url> | Local TUI or attach to a remote server. | | nikcli serve | Starts a headless Effect HttpApi server (HTTP + SSE + WebSocket) with OpenAPI. | | nikcli web | Starts the server and opens the web UI in the browser. | | nikcli workspace-serve | Starts the multi-workspace event server (proactive sync). | | nikcli companion serve | Server with integrated companion UI (also accessible from mobile). | | nikcli remote start / remote status | Remote control of the session (localtunnel / cloudflared / ngrok / remotosh tunnel, cloud relay). | | nikcli mobile | Mobile pairing: QR + deep link, host server for the device. | | nikcli chat (chatbot) | Starts a bot on Slack / Discord / Teams / Google Chat / Linear / GitHub. | | nikcli auth | Provider credentials: login / logout / list / set / get / remove with device code. | | nikcli account | nikcli cloud account (login, logout, list, switch, orgs). | | nikcli agent create / agent list | Generate (via LLM) or list custom agents. | | nikcli models [provider] | List models from models.dev, refresh cache, filter by provider. | | nikcli brain-model · image-model · speak-model | Configure brain, image-gen and TTS models. | | nikcli locale [show | set | reset] | Set language/region/timezone/currency and the model reply language. | | nikcli stats · nikcli usage · nikcli ads | Local metrics, session/project cost, configurable ads. | | nikcli heap | Show process memory metrics (rss, heap, external, arrayBuffers). | | nikcli session list | List and manage saved sessions (with pager). | | nikcli export [sessionID] | Export a session as JSON (info + messages + parts). | | nikcli import <file> | Import a session from JSON or a share URL. | | nikcli share (via TUI) | Generate a public/enterprise URL for the session. | | nikcli github install · nikcli github run | Install and manage a GitHub App for automations. | | nikcli pr <number> | Check out a PR and auto-start a review session. | | nikcli plug (plugin) | Install and manage plugins (npm mod or local path) with config patching. | | nikcli connectors | Manage connectors (Linear, GitHub, Slack, Notion, …) with dedicated auth. | | nikcli quickstart · nikcli doctor · nikcli upgrade · nikcli uninstall | Onboarding, diagnostics, upgrade, uninstall. | | nikcli completion | Generate shell completion scripts. | | Global flags | --print-logs, --log-level DEBUG | INFO | WARN | ERROR, --help/-h, --version/-v. |

Auto-approving permissions

--auto (aliases --yolo, --dangerously-skip-permissions) stops nikcli from pausing for permission confirmations. Intended for unattended runs — CI, scripted sessions, sandboxed worktrees — where there is nobody to answer a prompt.

It converts every ask into allow. It does not override anything you explicitly set to deny: a denial is a rail you deliberately put in place, and a flag named "skip permissions" should not quietly remove it. Combine the flag with permission denials in your config to run unattended while keeping specific operations off-limits:

// nikcli.json
{ "permission": { "bash": { "rm *": "deny", "git push *": "deny" } } }

nikcli --auto run "migrate the config loader to zod v4"

The flag applies to the whole process, including the session worker the TUI runs in.

OpenTelemetry / observability flags

These environment variables configure the observability layer described in the Observability docs. They are read at process start and are not hot-reloadable.

Variable	Default	Purpose
OTEL_EXPORTER_OTLP_ENDPOINT	unset	OTLP/HTTP endpoint. Setting it enables export.
OTEL_EXPORTER_OTLP_HEADERS	unset	Comma-separated key=value pairs (e.g. Authorization=Bearer%20…)
OTEL_RESOURCE_ATTRIBUTES	unset	Comma-separated key=value pairs merged into every span resource.
NIKCLI_DISABLE_OTEL_LIVE	false	Opt out of the in-process span capture (live panel).

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TUI: terminal user interface

The TUI (packages/nikcli/src/cli/cmd/tui) runs in a dedicated worker (worker.ts) that talks to the server via RPC + SSE. It is built on @opentui/core and @opentui/solid (45 FPS renderer, mouse, kitty keyboard, copy-on-select) and on @solid-primitives/* for storage, event-bus and scheduling.

Main areas (routes)

• Home — landing screen with prompt, tips, ads and MCP status.
• Session — detailed view: messages, subagent footer, timeline, fork, permissions, interactions, todo, contextual sidebar.
• Workspace — multi-project with sidebars for files, todo, MCP, LSP, context.
• Tree — tree visualization of files/sessions with activity rows.
• Changes — modified files with comments and header (PR-like review).
• Git graph · GitHub — commit graph visualization and integrated PR/issue view.
• Workspace create / list / unavailable — workspace management.

Main dialogs

dialog-model, dialog-mcp, dialog-routine, dialog-status, dialog-usage, dialog-theme-list / create, dialog-settings, dialog-config, dialog-help, dialog-tour, dialog-support, dialog-command (command palette), dialog-agent, dialog-advisor-model, dialog-skills, dialog-session-list / warp / delete-failed / rename, dialog-workspace-list / create / file-changes / unavailable, dialog-variant (model effort selection), dialog-stash (prompt queue), dialog-tag, dialog-login, dialog-onboarding, dialog-auth-manage, dialog-chat (quick chat), dialog-analytics, dialog-web-preview, dialog-image-model, dialog-speak-model, dialog-status, dialog-telemetry-live (live OpenTelemetry spans), dialog-opentelemetry (OTLP configuration), dialog-remote (tunnel status), dialog-provider (provider picker), plugin-route-missing (fallback for missing plugin routes).

Cross-cutting features

• Advanced prompt — history with arrow keys, frecency, stash, contextual completion, customizable keymaps (textarea-keybindings.ts), sounds (cli-sound).
• Granular permissions — PermissionNext system with rules per tool, path, command; arity evaluation (1st, 2nd, 3rd degree); contextual TUI prompts.
• Multiple sessions — sidebar with fuzzy search (fuzzysort), warp (quick jump), delete-failed handling.
• Integrated worktrees — create/switch git worktrees without leaving the TUI.
• Status indicator — idle, running, blocked, usage_limited, budget_limited.
• Theming — custom themes with creator/list dialog, KV persistence.
• Audio cues — sound notifications on important events (util/sound).
• Image preview — inline rendering of generated images (tui-image).
• TUI plugin system — the TUI is extensible via feature-plugins/ (home, loops, sidebar, system) and runtime plugins that can mount new slots, routes, and keymaps.

TUI = server client

The TUI can run as a client to a remote server (nikcli attach), so the same interface can control sessions on a different machine (workstation ↔ cloud server, etc.).

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Agents and subagents

The agent system (packages/nikcli/src/agent/) defines the LLM behavior, the exposed tools, the permissions and the mode (primary / subagent / all).

Primary agents (built-in)

• build — agent with full permissions (edit, bash, write, web, …), primary mode. Default agent for "build anything" use.
• plan — read-only agent: can analyze code, do research, but cannot modify files or perform side-effects. Primary mode.

Specialized subagents (built-in)

• general — generic fallback.
• explore — code search and mapping (read-only).
• @fast-explore — ultra-fast variant for light navigation.
• @planner — produces structured action plans.
• @code-reviewer — cognitive PR/diff review.
• @debugger — failure/log analysis and fix hypotheses.
• @test-runner — test execution/analysis, case generation.
• @refactor — conservative refactoring.
• scout — external exploration (libraries, APIs).
• researcher — evidence-based research in the background.
• support — documentation agent, read-only.
• ultrareview-reviewer — parallel reviewer for ultrareview.
• delegator — batch delegation with supervisor session.

build and plan are primary. Subagents are invoked by the primary via the task tool or through the delegation / delegator tools with supervised parallel execution.

Custom agents

nikcli agent create uses a meta-prompt (agent/generate.txt) to generate an agent from a description, picking the identifier, system prompt, enabled tools and mode. The resulting file is a Markdown with frontmatter saved to ~/.config/nikcli/agent/ or to the project's .nikcli/agent/. nikcli agent list shows the resolved list with the effective permissions.

Modes

• primary — user entrypoint only.
• subagent — invokable only by other agents.
• all — both roles.

Delegation runtime

The delegation and delegator tools let the primary agent start subagents in the background with a delegation_id and keep working; on completion, a supervisor session synthesizes the results. The task tool runs synchronous subagents.

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Toolset available to agents

Tools are registered in packages/nikcli/src/tool/:

Tool	Purpose
read · write · edit · multiedit · apply_patch	File I/O with unified diff and safe patch.
ls · tree · glob · grep · codesearch	Search and listing.
bash · monitor	Shell execution: bash for short commands, monitor for builds/tests/typecheck/dev servers with persistent logs and wake-on-finish.
task · delegation · delegator	Subagent orchestration.
todowrite · todoread · goal	Todo list and Goal engine management.
webfetch · websearch	Content retrieval and web search.
plan · plan-enter · plan-exit	Explicit plan mode (read-only enforcement).
skill	Load and execute a declarative skill.
apply_patch · batch	Multi-file patch.
invalid	Fallback for malformed calls.
context_collect · context_related · context_diagnostics · context_search	Context helpers (LSP, related, diagnostics).
lsp	LSP operations (definitions, references, hover, symbols, completion, call hierarchy, implementations).
question	Interactive multi-choice questions (UI).
generate_image	Image generation (OpenRouter gpt-5-image, nano-banana-pro-2.5).
speak (and providers elevenlabs, openrouter)	TTS voice synthesis played on the device.
voice	Speech-to-text (OpenRouter transcription).
mcp-exa	Preconfigured Exa MCP (search/extract).
memory_search	Search across sessions/projects memory.
repo_clone · repo_overview	Clone/overview external repos.
search_tools	Tool discovery (including TUI plugin slots).
external-directory	External path validation.
exec_code	Controlled code execution (sandbox).
truncation · truncation-dir	Output truncation to avoid context saturation.
opentui · chart-braille-line	OpenTUI/chart render in-terminal.
advisor	Background strategist for complex decisions.

Each tool has a description in tool/<name>.txt consulted by the primary agent for selection.

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Skills

Skills (packages/nikcli/src/skill/) are Markdown + script packages (e.g. computer-use, orca-cli, effect, opentui, bun-file-io, orchestration, find-skills, emil-design-eng, …) that inject specialized instructions, hooks, and extra tools. They are dynamically loaded and filtered against the agent permissions. The skill tool lets the agent invoke them explicitly.

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Loops, Goal, Routines, Missions

Nikcli ships four continuous-orchestration primitives:

• Goal (session/goal.ts, nikcli goal command) — the agent works until a verifiable condition holds, with state active | paused | blocked | usage_limited | budget_limited | complete, token budget and iteration count (MAX_ITERATIONS = 50).
• Loops (loop/engine.ts + TUI feature-plugins/loops) — a loop is a named, persisted workflow that runs an ordered list of stages, each driven by a single goal command. Triggers are manual or interval (Scheduler with scope: "instance"). It keeps running even when the TUI is closed thanks to the server-side engine. The user defines objective + trigger + stop conditions once.
• Missions (mission/orchestrator.ts + TUI feature-plugins/mission) — a higher-altitude workflow that decomposes a goal into milestones, each holding a DAG of features, with a validation checkpoint at the end of every milestone (scrutiny, user-test, or none). The orchestrator drives one feature at a time as a goal command, then runs a validation worker before advancing.
• Routines (mobile/routine.ts, nikcli routine command) — workflows scheduled (cron) or triggerable via API/HTTP, with auth tokens. They expose nikcli procedures as endpoints.

These primitives compose existing tools (Scheduler, Goal, task, delegation): nothing is reinvented, only orchestrated.

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Providers, models, connectors and MCP

LLM providers

Registry in packages/nikcli/src/provider/. Integrated AI SDK adapters: Anthropic, OpenAI, Azure OpenAI, Google, Google Vertex, AWS Bedrock, Groq, Mistral, Cohere, xAI (Grok), Cerebras, DeepInfra, Perplexity, Together AI, OpenRouter, Vercel AI Gateway, GitLab AI Provider, OpenAI-compatible. Custom adapters also included for GitHub Copilot, OpenAI Codex, Cloudflare AI, Cursor.

For each provider:

• Models (synced with models.dev via provider/models.ts).
• Prompt/stream transformations (provider/transform.ts).
• Auth flow (provider/auth.ts).

Commands:

nikcli auth login
nikcli models                  # all models
nikcli models openai --verbose
nikcli brain-model             # model for the "brain" (background reasoning)
nikcli image-model openrouter openai/gpt-5-image
nikcli speak-model elevenlabs YOq2y2Up4RgXP2HyXjE5

Multimodal models

• Image: gpt-5-image (OpenAI), nano-banana-pro-2.5 (Google) — via OpenRouter.
• TTS: ElevenLabs (high quality) and OpenRouter (OpenAI TTS, gpt-audio-mini).
• STT: OpenRouter transcription.

MCP (Model Context Protocol)

First-class MCP server with OAuth auth (packages/nikcli/src/mcp):

• nikcli mcp add <name> <url-or-cmd>: adds a server.
• nikcli mcp auth <name>: dedicated OAuth flow.
• nikcli mcp list · status · debug.
• MCP tools are exposed as native tools in the agent (registered in tool/registry.ts).
• Preconfigured MCP: Exa (mcp-exa).

Connectors

packages/nikcli/src/connectors/ manages third-party integrations with dedicated credentials and auth (GitHub, GitLab, Linear, Slack, Notion, Jira, …). Commands nikcli connectors (add, list, auth, status) with both CLI and TUI support. Each connector exposes an API reused by the agent tools.

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Sessions, worktrees, sandboxes, sharing

Sessions

session/ defines Session.Info, MessageV2, parts (text, tool-call, file, patch, image, subagent, …), compaction, revert/unrevert, fork, retry, summary, and a v2 engine (session/v2) rolling out. Storage is SQLite via Drizzle (session.sql.ts).

Worktrees

worktree/ manages managed and unmanaged git worktrees to isolate sessions per branch.

Sandboxes

sandbox/ lets you run tools in isolated environments: Vercel Sandbox (@vercel/sandbox), Docker containers, local execution. Sessions can be associated with a sandbox for real isolation.

Sharing

share/ and share-next.ts generate public/enterprise URLs to read sessions. nikcli export and nikcli import allow JSON serialization. The nikcli import command also accepts share URLs, normalizing enterprise hosts (nikcli.store, *.dev.nikcli.store).

Loop, Background, Brain

• background/ — long-running jobs with monitoring.
• brain/ — brain scheduler that produces background reasoning with a dedicated model (BRAIN_SESSION_TITLE), used by the TUI for titles/tips.

Permission system

permission/next.ts + evaluate.ts + schema.ts with rules per tool/agent/path/command, 3-tier evaluation (arity.ts). The TUI asks for confirmation contextually.

Sync / Workspace

sync/ and workspace/ keep projects and sessions in sync on multi-workspace servers. nikcli serve and nikcli workspace-serve expose event servers; MCP and mobile clients consume via SSE.

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Server, web, mobile, remote control

HTTP/SSE/WebSocket server

packages/nikcli/src/server/server.ts owns the listener and request pipeline. The contract lives in src/server/httpapi/:

• Effect HttpApi groups plus raw handlers on Bun.serve. OpenAPI and the generated clients come from PublicApi.
• Clients — bun run generate:httpapi-clients writes @nikcli-ai/sdk/httpapi and the in-process Effect client. There is no Hono app and no hey-api step.
• Routes — session, file, pty, mcp, connectors, mobile, provider, config, permission, loop, question, global, tui, experimental, users, workspace, …
• SSE for realtime events to the TUI, mobile, web (EventFeed).
• WebSocket for PTY connect.
• mDNS (server/mdns.ts) with bonjour-service for local discovery.
• Proxy (server/proxy.ts) to route to container/sandbox instances.
• Auth: optional basic auth, NIKCLI_SERVER_PASSWORD, NIKCLI_SERVER_TAILSCALE_AUTH to trust Tailscale headers on loopback.

Web apps

• packages/web (Astro + Tailwind) — public site, install script, docs (hosted on Cloudflare Pages).
• packages/app (SolidStart) — full web application.
• packages/companion — companion UI and server routes for nikcli companion serve.

Mobile companion

• packages/mobile (Expo / React Native) with realtime SSE, iOS and Android support (ios/, android/, eas.json).
• Pairing: nikcli mobile shows a QR + deep link nikcli://connect?server=...&token=...&directory=....
• MobileAuth server-side (packages/nikcli/src/mobile/auth.ts) handles tokens, device id, scope.

Remote control

• nikcli remote start opens a tunnel (localtunnel, cloudflared, ngrok, remotosh) or uses the cloud relay (--cloud) with bearer token.
• nikcli remote status shows tunnel state.
• packages/remote contains the web client and QR renderer (qrRenderer, tunnelProvider, cloudService).
• packages/terminal-control abstracts the terminal session across CLI, TUI and agents.

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Bots and chat adapters

packages/nikcli/src/chatbot/ orchestrates multi-platform bots thanks to @chat-adapter/*:

• Slack (packages/slack, deployed on slack.nikcli.store via Wrangler).
• Discord Gateway (packages/discord, @nikcli-ai/discord) — native Gateway bot. In the TUI, /discord (alias /discord-setup) walks through the bot token, invite URL, and start/stop. HTTP: GET /discord, POST /discord/setup, /start, /stop.
• Discord webhooks (@chat-adapter/discord) — the Chat SDK adapter, managed with /bots.
• Microsoft Teams (@chat-adapter/teams).
• Google Chat (@chat-adapter/gchat).
• GitHub Issues (@chat-adapter/github).
• Linear (@chat-adapter/linear).
• In-memory state persistence (@chat-adapter/state-memory).

Unified command:

nikcli chat          # configure and start the Chat SDK bot
nikcli chatbot       # alias

In the TUI, /discord sets up the Discord Gateway bot (token, invite, start). /bots manages Chat SDK webhook adapters.

Bot sessions are full nikcli sessions: prompt, tools, MCP, connectors, history.

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Plugins, skills and TUI sub-plugins

Plugins (in-process)

packages/nikcli/src/plugin/ supports plugins that add:

• Agents (Markdown files with frontmatter mode + tools).
• Tools (entries in tool/registry.ts).
• Hooks (@nikcli-ai/plugin exports a hook system: auth, chat.headers, chat.params, tool.execute.before, tool.execute.after, experimental.session.compacting, experimental.text.complete, command.execute.before, …).
• LLM providers.
• TUI plugins (route, slot, keymap, asset).

Install:

nikcli plug install @nikcli-ai/plugin-foo
nikcli plug list
nikcli plug remove @nikcli-ai/plugin-foo

Preconfigured plugins (packages/plugin/plugins):

• agent-memory · background · background-agents · context-analysis · direnv · dynamic-context-pruning · envsitter-guard · handoff · safety-net · smart-title.

Skills

Skills (above) are a lighter format: just Markdown with a description and associated tools.

TUI sub-plugins

The TUI feature-plugins (feature-plugins/home, loops, sidebar, system) are declarative extension points to mount views/components without patching the core. The tui/plugin/ system provides api.tsx, runtime.ts, slots.tsx, keymap.ts, internal.ts.

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Configuration

Config resolution (in order of increasing priority):

1. Remote: /.well-known/nikcli for public OAuth providers.
2. Global: ~/.config/nikcli/nikcli.jsonc (or nikcli.json, config.json).
3. Custom: env vars NIKCLI_CONFIG (path) or NIKCLI_CONFIG_CONTENT (string).
4. Project: nikcli.jsonc or nikcli.json walking up the directory tree.

Schema published at: https://nikcli.store/config.json

Minimal example:

{
  "$schema": "https://nikcli.store/config.json",
  "theme": "nikcli",
  "provider": {
    "openai": { "options": { "apiKey": "sk-..." } },
  },
  "agent": {
    "build": { "model": "anthropic/claude-sonnet-4.5" },
    "plan": { "model": "anthropic/claude-haiku-4.5" },
  },
  "mcp": {
    "exa": { "type": "remote", "url": "https://mcp.exa.ai/mcp" },
  },
}

Useful sub-configs:

• theme, keybinds, tui — TUI look/feel and behavior.
• provider.<id>.models — pin models per provider.
• agent.<name> — model, prompt, tools, permission.
• permission — global rules.
• mcp — MCP servers.
• connectors — connectors with creds.
• compaction, share, experimental — flags and limits.
• ads — custom ads/announcements for the TUI.
• locale — language/region/model reply language (it-IT, Europe/Rome, EUR, reply-language: "it").

Recognized env flags (see flag/flag.ts): NIKCLI_SERVER_PASSWORD, NIKCLI_SERVER_TAILSCALE_AUTH, NIKCLI_OPENROUTER_API_KEY, NIKCLI_ELEVENLABS_API_KEY, NIKCLI_GIT_BASH_PATH, NIKCLI_LOG_LEVEL, etc.

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Documentation and resources

• Site & docs: https://nikcli.store/docs
• Config schema: https://nikcli.store/config.json
• Quickstart: https://nikcli.store/docs/quickstart
• Web app: https://app.nikcli.store
• Slack bot: https://slack.nikcli.store
• Upstream project (OpenCode): https://github.com/anomalyco/opencode
• This fork: https://github.com/nikomatt69/nikcli
• Issue tracker & discussions: GitHub repository.
• Internal specs (in specs/): performance, modularization, i18n, loops, OpenAPI cleanup.
• Changelog: CHANGELOG.md (v1.5.0 — Effect Schema migration, Feb 2026 milestone).

Useful repository files:

• AGENTS.md — conventions for coding agents.
• STYLE_GUIDE.md — code style (function-first, no let, avoid else, single-word naming, prefer Bun.*).
• CONTRIBUTING.md · SECURITY.md · DEPLOYMENT.md · SPEAK_SETUP.md · STATS.md.
• install — bash install script.
• Dockerfile · Dockerfile.serve — container images.
• sst.config.ts · fly.toml · railway.toml · wrangler.toml — deploy configs.

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Credits

Nikcli is a fork of OpenCode, the open source coding agent (the repo previously lived at sst/opencode). The core architecture, the terminal-first product idea, and a large share of the code in this repository originate there. Thanks to the OpenCode authors, maintainers, and contributors for releasing it under a permissive license.

Nikcli is an independent fork, not affiliated with or endorsed by the OpenCode project. Any bug you hit in nikcli should be reported to this repository, never upstream.

License

MIT — see LICENSE. The license file retains the upstream OpenCode copyright alongside the copyright for this fork's changes.