ralph-workflow 0.8.9

Vendor-neutral AI coding workflow orchestration with unattended execution, recovery, and verification.

Ralph Workflow

Mirror of codeberg.org/RalphWorkflow/Ralph-Workflow — star/issues/discussion on Codeberg.

Hand your coding agents a spec tonight. Wake up to reviewable, tested commits.

Ralph Workflow is a free, open-source composable loop framework that runs the coding agents you already use — Claude Code, Codex, or OpenCode — on your own machine. Simple at the center, powerful in composition.

Nightcrawler credits Ralph Workflow as its inspiration · ~1,300 installs/month on PyPI.

Run the coding agents you already use — Claude Code, Codex, OpenCode, Nanocoder, and Google Anti Gravity — on your own machine. Hand it a spec before you sleep, wake up to runnable, tested software.

MCP server trust boundary

The standalone Ralph Workflow MCP server (ralph-mcp) binds to 127.0.0.1 and exposes the exec surface only over loopback. When the optional MCP_AUTH_TOKEN environment variable is set, requests must carry a matching Authorization: Bearer <token> header; the comparison uses hmac.compare_digest to prevent timing-side-channel attacks. An unset or empty MCP_AUTH_TOKEN is a no-op (the loopback bind is the trust boundary).

Install and run

pipx install ralph-workflow   # 1. install
ralph --init                  # 2. scaffold .agent/ and PROMPT.md
$EDITOR PROMPT.md             # 3. edit PROMPT.md — your spec for the run
ralph                         # 4. run the unattended workflow

This also auto-symlinks the bundled skill bundle into the supported agent roots and seeds a batteries-included .gitignore covering Python, Node, Rust, Go, Ruby, PHP, Java/Kotlin, .NET, Dart/Flutter, Elixir, Scala, Terraform, and common IDE/OS patterns.

What an overnight run leaves you

Here is the actual finish-receipt from the bundled empty-name-validation example — a real, unedited handoff, not a mock-up. You read this in the morning instead of a transcript:

# Development Result

## Outcome
Implemented empty-name validation in the CLI create flow and added
test coverage for empty and whitespace-only input.

## Changed files
- cli/create.py
- tests/test_create.py

## Checks run
- pytest tests/test_create.py        ✓ passed
- project formatting / lint checks    ✓ passed

## Reviewer focus
- confirm validation happens before any file creation side effect
- confirm the error message is clear enough for CLI users
- confirm no unrelated flow changed

Want to watch a full first run (--init → --diagnose → --dry-run)? It is a real, unedited capture:

Ralph is free and runs locally — stars are the only signal we get that it's working for you, and they set what we build next. If a run shipped real software for you: ⭐ star on Codeberg.

What it does

Ralph Workflow takes the simple Ralph-loop idea — plan, build, verify — and turns it into a composable loop framework where each phase can loop independently and hand off to the next. A single ralph command spawns planning, development iteration, review, and fix cycles across multiple agents, then produces finished git commits you can review in the morning.

This is not a chat window or a prompt tool. It's an orchestrator — an operating system for autonomous coding — that runs real engineering pipelines unattended, overnight, while you sleep. The default workflow ships strong enough to start with immediately; customize it later when you need more control.

The name comes from the original Ralph loop: repeat a strong prompt until the model can make real progress. Ralph Workflow takes that simple, powerful idea and adds planning before implementation, verification after development, agent fallbacks, agent-agnostic execution, and customizable pipelines so unattended runs keep moving and teams can review the results with confidence.

Why it's different

What most tools do	What Ralph Workflow does
One agent, one chat session	Multiple agents routed by phase (planning → dev → review → fix)
Copy-paste between tools	Agents hand off work through the repo, not context stuffing
Hit context limits halfway	Phase-based summaries + checkpoint files keep context tight
Locked to one vendor	Claude + Codex + OpenCode + Nanocoder + AGY in the same pipeline — your choice
"Look at the diff"	Runnable, tested software with integration checks

See how Ralph Workflow compares to 14 other autonomous coding tools →

Who it's for

Developers and teams who have ambitious, well-specified work that's too big to babysit and too risky to trust blindly.

A good first run looks like:

1. Write a spec — what you want built, in plain English or markdown
2. Run ralph — the orchestrator plans, builds, tests, and iterates
3. Review the commits — come back to committed, tested code

Start here: your first overnight task →

New to autonomous coding? The 4-step guide walks you through picking a task, writing a short spec, running Ralph Workflow, and judging the result honestly — all in one page. Prefer a deeper narrative? Read the blog version →

Start with a bounded, verifiable task — the kind of work you would actually merge. A good first run is 2-6 hours, has a clear boundary, and a concrete correctness check. For a strong first run, pick a task with clear acceptance criteria: "add tests to an existing module so coverage reaches 80%", "refactor one subsystem with existing tests to confirm no regressions", or "build a fitness-app slice with concrete feature checks". The common thread is a well-specified outcome you can judge honestly in the morning, not how small the task is.

Install

pipx (recommended)

pipx install ralph-workflow
ralph --help

PyPI

pip install ralph-workflow
ralph --help

Docker

docker run --rm -it -v "$(pwd):/workspace" -v "$HOME/.ralph:/root/.ralph" ralphworkflow/ralph --help

Build from source:

git clone https://codeberg.org/RalphWorkflow/Ralph-Workflow.git
cd Ralph-Workflow/ralph-workflow
docker build -t ralph-workflow .
docker run --rm -it -v "$(pwd):/workspace" -v "$HOME/.ralph:/root/.ralph" ralph-workflow

From source

git clone https://codeberg.org/RalphWorkflow/Ralph-Workflow.git
cd Ralph-Workflow/ralph-workflow
pip install -e .
ralph --version

Requires Python 3.12+.

Real-task walkthrough →

Before your first run

1. Install the agent CLIs you want Ralph Workflow to call.
2. Authenticate those CLIs normally.
3. Pick one small, concrete task for the first run.

Ralph Workflow does not manage provider authentication or store your agent credentials. You authenticate the agent CLIs yourself first, and Ralph Workflow then invokes those tools directly and supervises the workflow, even when different phases are routed through different agent families.

Quick start

cd /path/to/your/project
ralph --init
ralph --diagnose
$EDITOR PROMPT.md
ralph

What happens in that flow:

• ralph --init creates the local .agent/ support files.
• ralph --diagnose checks whether your configured agents and MCP setup are reachable.
• PROMPT.md becomes the task spec for the run.
• ralph directly invokes your configured agent CLIs and starts the unattended workflow.

After ralph --init, review the generated .agent/ support files. If this repository needs a project-local main-config override, run ralph --init-local-config to create .agent/ralph-workflow.toml, then point the workflow at the agent CLIs you already use for planning, development, and review.

Depth presets control iteration intensity:

ralph -Q     # quick: small fixes, single iteration
ralph        # standard: most features and tasks
ralph -T     # thorough: complex refactors, ten iterations

A fast way to tell whether Ralph Workflow fits

1. Pick one real backlog task that is small enough to review in one sitting.
2. Write it down in PROMPT.md with clear acceptance criteria.
3. Run Ralph Workflow overnight.
4. Come back and ask one question: would you merge this?

If yes, give it a harder task next. If no, tighten the spec, checks, or task choice and run again.

If the first run teaches you something real either way, turn that result into the right public Codeberg action: star/watch the primary repo if it earned trust, or report the exact first-run friction on Codeberg if it did not.

What to expect from a run

Ralph Workflow is meant to get you to a strong implementation starting point while you are away, not to replace engineering judgment.

A good run should leave you with:

• code that compiles, tests, or clearly shows where work remains
• logs and output that explain what happened
• a result that is worth continuing from, not discarding and restarting

That may be a finished small task, or it may be a substantial first pass toward production on a larger one.

When Ralph Workflow fits (and when it doesn't)

Fits:

• Multi-step tasks that outgrow one prompt
• Work you want to review after the fact instead of steering live
• Teams that want AI execution to stay in the repo
• Runs where you want to mix stronger and cheaper models by phase

Does not fit:

• One-shot interactive prompts
• Pair-programming sessions with constant human steering
• Tiny tasks where setup overhead is not worth it
• Workflows that need unpredictable mid-run human input

Documentation

This README intentionally leaves out deeper implementation details and defers to the docs/sphinx/ pages for those.

• Quickstart: docs/sphinx/quickstart.md — shorter repeat-use reference with commands and flags
• Getting Started: docs/sphinx/getting-started.md — fuller first-run walkthrough with task guidance
• Concepts: docs/sphinx/concepts.md — terminology and mental model
• CLI Reference: docs/sphinx/cli.md — all flags and sub-commands
• Configuration: docs/sphinx/configuration.md — config files and precedence
• Developer Reference: docs/sphinx/developer-reference.md — maintained contributor and architecture reference
• Modules Index: docs/sphinx/modules.rst — API/module entry points for deeper internals

Privacy & Error Reporting

Ralph Workflow sends anonymous crash reports and performance metrics to help fix bugs and improve reliability. No personal data is collected.

Each installation generates a random 32-character identifier stored in ~/.config/ralph-workflow-user.ini. This identifier is not tied to your name, email address, IP address, or any other personal data — it is a random string used only to distinguish different installations in crash reports. A fresh random session identifier is generated on every run.

To opt out: delete or rename ~/.config/ralph-workflow-user.ini. Ralph Workflow creates a new random ID on the next run.

Community

Already installed? Run ralph star from your terminal to open the primary repo, or visit https://codeberg.org/RalphWorkflow/Ralph-Workflow. Codeberg is primary — star, watch, fork, and open issues there first; GitHub is a read-only mirror.

Stars are the only signal we get that Ralph Workflow is working for you, and they set what we build next.

Development and verification

If you are changing Ralph Workflow itself, start with CONTRIBUTING.md and run the canonical verification command before you finish:

make verify