Getting Started

May 28, 2026 · View on GitHub

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This guide walks you from install to your first task in Fusion.

Install Fusion

Choose one of these install methods from the README quick start:

Run Fusion directly from npm without a global install:

npx runfusion.ai

This launches the dashboard immediately. You can also run subcommands the same way (for example, npx runfusion.ai task create "fix X").

One-line installer (macOS & Linux)

curl -fsSL https://runfusion.ai/install.sh | sh
fusion dashboard

Homebrew (macOS & Linux)

brew tap runfusion/fusion
brew install fusion
fusion dashboard            # or: fn dashboard

npm global

npm install -g @runfusion/fusion
fn dashboard                # or: fusion dashboard

From source (development)

pnpm dev dashboard

After installing, verify the CLI is available:

fn --help
# or
fusion --help

Troubleshooting fn update

If fn update fails with an npm bin-link collision (for example EEXIST / File exists mentioning fn or fusion), Fusion now retries once with --force automatically.

If update still fails, run the manual recovery commands:

npm uninstall -g runfusion.ai
rm -f $(command -v fn) $(command -v fusion)
npm install -g @runfusion/fusion@latest

If you installed via Homebrew and links are still broken, reinstall the formula:

brew uninstall fusion && brew install runfusion/tap/fusion

Initialize a Project

In each repository you want Fusion to manage, run:

fn init

On fresh init, Fusion also installs its bundled fusion skill into supported agent homes (~/.claude/skills/fusion, ~/.codex/skills/fusion, ~/.gemini/skills/fusion) when those targets are missing. Existing installs are left untouched.

First Run and Onboarding

Start the dashboard:

fn dashboard

On first launch, Fusion opens an onboarding wizard with three steps:

  1. AI Setup — choose a provider and authenticate (you only need one to start). Anthropic/Claude and OpenAI Codex use a pasted authorization-code OAuth flow in onboarding and Settings (sign in, then paste the final redirect URL or code back into Fusion), and Fusion warns before login so you remember to copy the browser address bar URL before the redirect tab appears to fail. Anthropic — via Claude CLI remains available as a separate optional path. Deprecated Google Gemini CLI / Antigravity entries are hidden; Google/Gemini API key, Google Generative AI, Vertex, and Cloud Code options remain available.
  2. GitHub (Optional) — connect GitHub for issue import and PR workflows
  3. First Task — create your first task or import one from GitHub

The wizard is dismissible and non-blocking. You can skip it and continue using Fusion, then reopen it later from Settings → Authentication.

If a provider login gets stuck in progress (for example GitHub Copilot/device-code sign-in), use Cancel on the provider card in onboarding or in Settings → Authentication, then retry immediately — no dashboard restart is required.

On startup, Fusion prints an Open: URL that includes a bearer token (for example, http://localhost:4040/?token=fn_...). Open that URL to sign in quickly.

Create Your First Task

Create tasks from the board or CLI.

Option A: Quick Entry (Board)

  1. Type a short request in the quick entry input.
  2. Press Enter.
  3. Task appears in Planning and the planning agent generates PROMPT.md.

Option B: Plan Mode (Board)

Use the 💡 button to open AI planning mode:

  • Fusion asks clarifying questions
  • Produces a structured summary
  • Lets you create one task or multiple dependency-linked tasks

Option C: Subtask Breakdown (Board)

Use the 🌳 button to generate 2–5 subtasks, reorder them, and link dependencies before creating tasks.

You can also use expanded board controls (Refine, Deps, Attachments, model overrides, agent assignment) or the CLI (fn task create, fn task plan) when needed.

Understand the Task Lifecycle

Fusion uses six columns:

  1. Planning — raw idea; AI writes plan
  2. Todo — planned and queued
  3. In Progress — executor implements in a dedicated worktree
  4. In Review — implementation complete, awaiting merge/finalization
  5. Done — merged and complete
  6. Archived — retained for history, optionally cleaned up from filesystem

Daily CLI Commands

fn task list
fn task show FN-001
fn task logs FN-001 --follow --limit 50
fn task steer FN-001 "Prefer existing utility functions"
fn task pause FN-001
fn task unpause FN-001

Next Steps