Fabro Workflow Factory

Skill by ara.so — Daily 2026 Skills collection.

Fabro is an open source AI coding workflow orchestrator written in Rust. It lets you define agent pipelines as Graphviz DOT graphs — with branching, loops, human approval gates, multi-model routing, and cloud sandbox execution — then run them as a persistent service. You define the process; agents execute it; you intervene only where it matters.

Installation

# Via Claude Code (recommended)
curl -fsSL https://fabro.sh/install.md | claude

# Via Codex
codex "$(curl -fsSL https://fabro.sh/install.md)"

# Via Bash
curl -fsSL https://fabro.sh/install.sh | bash

After installation, run one-time setup and per-project initialization:

fabro install      # global one-time setup
cd my-project
fabro init         # per-project setup (creates .fabro/ config)

Key CLI Commands

# Workflow management
fabro run <workflow.dot>          # execute a workflow
fabro run <workflow.dot> --watch  # stream live output
fabro runs                        # list all runs
fabro runs show <run-id>          # inspect a specific run

# Human-in-the-loop
fabro approve <run-id>            # approve a pending gate
fabro reject <run-id>             # reject / revise a pending gate

# Sandbox access
fabro ssh <run-id>                # shell into a running sandbox
fabro preview <run-id> <port>     # expose a sandbox port locally

# Retrospectives
fabro retro <run-id>              # view run retrospective (cost, duration, narrative)

# Config
fabro config                      # view current configuration
fabro config set <key> <value>    # set a config value

Workflow Definition (Graphviz DOT)

Workflows are .dot files using the Graphviz DOT language with Fabro-specific attributes.

Node Types

Minimal Hello World

// hello.dot
digraph HelloWorld {
    graph [
        goal="Say hello and write a greeting file"
        model_stylesheet="
            * { model: claude-haiku-4-5; }
        "
    ]

    start [shape=Mdiamond, label="Start"]
    exit  [shape=Msquare,  label="Exit"]

    greet [label="Greet", prompt="Write a friendly greeting to hello.txt"]

    start -> greet -> exit
}

fabro run hello.dot

Multi-Model Routing with Stylesheets

Fabro uses CSS-like model_stylesheet declarations on the graph to route nodes to models. Use classes to target groups of nodes.

digraph PlanImplementReview {
    graph [
        goal="Plan, implement, and review a feature"
        model_stylesheet="
            *          { model: claude-haiku-4-5; reasoning_effort: low; }
            .planning  { model: claude-opus-4-5;  reasoning_effort: high; }
            .coding    { model: claude-sonnet-4-5; reasoning_effort: high; }
            .review    { model: gpt-4o; }
        "
    ]

    start  [shape=Mdiamond, label="Start"]
    exit   [shape=Msquare,  label="Exit"]

    plan     [label="Plan",      class="planning", prompt="Analyze the codebase and write plan.md"]
    implement [label="Implement", class="coding",   prompt="Read plan.md and implement every step"]
    review   [label="Review",    class="review",   prompt="Cross-review the implementation for bugs and clarity"]

    start -> plan -> implement -> review -> exit
}

Supported Model Stylesheet Properties

model: <model-id>           # e.g. claude-sonnet-4-5, gpt-4o, gemini-2-flash
reasoning_effort: low|medium|high
provider: anthropic|openai|google

Human Gates (Approval Nodes)

Use shape=hexagon to pause execution for human approval. Transitions are labeled with [A] (approve) and [R] (revise/reject).

digraph PlanApproveImplement {
    graph [
        goal="Plan and implement with human approval"
        model_stylesheet="
            * { model: claude-sonnet-4-5; }
        "
    ]

    start   [shape=Mdiamond, label="Start"]
    exit    [shape=Msquare,  label="Exit"]

    plan    [label="Plan",         prompt="Write a detailed implementation plan to plan.md"]
    approve [shape=hexagon,        label="Approve Plan"]
    implement [label="Implement",  prompt="Read plan.md and implement every step exactly"]

    start -> plan -> approve
    approve -> implement [label="[A] Approve"]
    approve -> plan      [label="[R] Revise"]
    implement -> exit
}

Approve or reject from the CLI:

fabro runs                          # find the paused run-id
fabro approve <run-id>              # continue with implementation
fabro reject <run-id> --note "Add error handling to the plan"

Loops and Fix Cycles

Use labeled transitions to build automatic retry/fix loops:

digraph ImplementAndTest {
    graph [
        goal="Implement a feature and fix failing tests automatically"
        model_stylesheet="
            *       { model: claude-haiku-4-5; }
            .coding { model: claude-sonnet-4-5; reasoning_effort: high; }
        "
    ]

    start    [shape=Mdiamond, label="Start"]
    exit     [shape=Msquare,  label="Exit"]

    implement [label="Implement", class="coding",
               prompt="Implement the feature described in TASK.md"]
    test      [label="Run Tests",
               prompt="Run the test suite with `cargo test`. Report pass/fail."]
    fix       [label="Fix",       class="coding",
               prompt="Read the test failures and fix the code. Do not change tests."
how to use fabro-workflow-factory
CursorClaude CodeClineCodexWindsurfGooseGitHub CopilotVS CodeGemini CLIKiloOpencodeKimi CLIRoo ClineAiderContinueZedBolt.newLovablev0Replit AgentSweepSmol DeveloperDevinCavemanAmpAntigravity
How to use fabro-workflow-factory on Cursor
AI-first code editor with Composer
1
Prerequisites
Before installing skills in Cursor, ensure your development environment meets these requirements:
›Cursor installed and configured on your development machine
›Node.js version 16.0+ with npm package manager (verify with node --version)
›Active project directory or workspace where you want to add fabro-workflow-factory
2
Execute installation command
Execute the skills CLI command in your project's root directory to begin installation:
$npx skills add https://github.com/aradotso/trending-skills --skill fabro-workflow-factorycopy
The skills CLI fetches fabro-workflow-factory from GitHub repository aradotso/trending-skills and configures it for Cursor.
3
Select Cursor when prompted
The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:
◆ Which agents do you want to install to?
│
│ ── Universal (.agents/skills) ── always included ────
│   • Amp
│   • Antigravity
│   • Cline
│   • Codex
│ ●Cursor(selected)
│   • Cursor
│   • Windsurf
4
Verify installation
Confirm successful installation by checking the skill directory location:
.cursor/skills/fabro-workflow-factory
Reload or restart Cursor to activate fabro-workflow-factory. Access the skill through slash commands (e.g., /fabro-workflow-factory) or your agent's skill management interface.
⚠
Security & Verification Notice
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.
Additional Resources
›View source code on GitHub›Skills CLI documentation›Learn more about Cursor›What are agent skills?