OpenClaw can serve as a self-hosted control layer for AI coding agents, letting you build and test a website or mobile-app prototype from a chat interface. Setup is a four-part process: install the Gateway, connect a model account or API key, verify the Gateway and Control UI, then give the agent a small, phased build brief.
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For a first project, run it on your own computer. Move to a Raspberry Pi when you need an always-on host at home, or to a VPS when you need remote access and continuous uptime. The same Gateway remains the hub for sessions, routing and channel connections.
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OpenClaw is open-source, self-hosted software that connects chat applications to AI coding agents. One Gateway handles sessions, routing and channel connections; you can interact through its browser Control UI, command-line interface and optional desktop or mobile nodes. Configuration is kept in ~/.openclaw/openclaw.json.
A fresh local installation normally exposes the Control UI at http://127.0.0.1:18789/. That address is bound to the local machine by default, which is useful while you learn because it avoids exposing an unfinished agent to the public internet.
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This is not a hosted, no-code app-builder service. OpenClaw supplies the orchestration and agent connection; the model you authenticate and the tools available to it do the coding. You still need to define the product, review generated files, run the application and decide when changes are safe to keep.
Prerequisites to check first
- Node.js: install Node.js 24.16 or newer, or Node.js 26.1 or newer. Node 26 is the recommended line.
- Model access: have a working Claude Code or Codex CLI login, or an API key for a supported model provider. Onboarding cannot complete without one of these authentication paths.
- A host: choose your main computer, a companion desktop application, a Raspberry Pi or a cloud/VPS server before you begin.
- A project workspace: decide where generated code may be written and where you will run it. Keep unrelated personal files outside that workspace.
- Permissions: make sure your account can install Node packages and create a background service if you want the Gateway to start automatically.
Check the runtime before installing:
node -v
npm -vIf the reported Node version is below the required range, upgrade Node first. Changing providers or reinstalling OpenClaw will not fix an incompatible runtime.
Choose where the Gateway will run
The deployment choice affects setup effort, recurring cost, uptime and how much of your data and network you control. Decide before onboarding because moving later means copying configuration and securing a new machine.
| Location | Best for | Advantages | Trade-offs to plan for |
|---|---|---|---|
| Main computer | Learning, prototyping and direct file access | Fastest setup; the agent can work beside your editor and local test tools | The Gateway is unavailable when the computer sleeps or is turned off; local files and channels share one machine |
| Raspberry Pi or similar always-on computer | A small, home-hosted Gateway that should stay online | Low-power, independent of your primary laptop and suitable for a persistent local service | Confirm current Node support, operating-system image and CPU architecture for the exact board before buying or installing |
| VPS or cloud server | Remote access, multiple devices and continuous uptime | Runs in a data centre and can remain online while you travel; easier to separate from personal files | Monthly hosting cost, firewall and update work, backups, latency and greater responsibility for remote exposure |
For the first build, local is usually the safest learning path. A Pi is appropriate when the workflow is stable and you want a small always-on box. Choose a VPS only after you understand the Gateway’s security settings and have a backup plan.
Install OpenClaw
Use the installer for your operating system, or invoke the package directly with the Node package runner:
npx openclaw@latestThe official installation flow provides shell and PowerShell commands. Follow the command for your platform rather than mixing shell syntax between operating systems. If the installer offers to put the CLI on your PATH, accept that option unless you intentionally manage global npm binaries yourself.
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When installation finishes, keep the terminal open until the first-run onboarding prompt appears. On a new machine, OpenClaw should detect whether a usable Claude Code or Codex login or an API key is already available.
Complete onboarding and connect a model
There are two normal paths.
Quick start
Select Quick start when OpenClaw detects a usable CLI login or API key. This reuses the detected credentials and applies sensible defaults so you can reach a working agent quickly.
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Custom setup
Select Custom setup when you need to choose a provider, enter credentials manually or change more of the default configuration. Use this path when the machine has several credentials and you want to make the active one explicit.
Run the explicit wizard
If you want to restart onboarding or prefer a command-driven entry point, run:
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openclaw onboardThe wizard establishes model-provider authentication and performs a real completion before it continues. It then guides you through workspace, Gateway, channel, agent and plugin configuration. Treat the real completion as a gate: if it fails, resolve authentication or provider selection before adding channels or building files.
During onboarding, choose a dedicated workspace for the app. A separate directory makes it easier to inspect generated changes, back up the project and prevent the agent from modifying unrelated repositories.
Open the Control UI and prove the route works
After onboarding, open http://127.0.0.1:18789/ on the same machine. Send a short message such as “Reply with the active workspace path and a one-sentence description of your role.” A successful response confirms that the Gateway is running, the model route is authenticated and the basic session path works.
Before asking for application code, verify the command-line installation and Gateway state:
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openclaw doctor
openclaw gateway statusopenclaw --versionconfirms that the CLI is available in your shell.openclaw doctorchecks the current configuration for problems.openclaw gateway statusshows whether the Gateway is running.
Run these checks again after changing providers, moving the workspace or upgrading Node. They provide a clean baseline before you diagnose an application-level error.
Keep the Gateway running in the background
A terminal-launched Gateway stops when that terminal session ends. For continuous operation, install the background service using the platform command shown in the OpenClaw documentation and installer:
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- macOS: the service is installed as a LaunchAgent.
- Linux or WSL2: the service uses a systemd user service.
- Native Windows: the documented method uses a Scheduled Task, with a startup-item fallback.
After installing the service, check it with openclaw gateway status and open the Control UI again. If the status is stopped, inspect the service’s platform logs before attempting an app build; a stopped Gateway is an infrastructure issue, not a prompt problem.
Lock down the first installation
OpenClaw follows a local-first security model, but self-hosting does not remove the need for access controls. Apply these protections before connecting group chats or a remote client:
- Keep the bind interface controlled: leave the Gateway on its local interface while experimenting. Do not publish the Control UI directly to the internet just to make remote access convenient.
- Use channel allowlists: permit only the accounts or rooms that should be able to invoke the agent. The configuration supports allowlists and group-mention rules.
- Separate users and projects: use different agents or workspaces when people or projects should not share context or files.
- Protect credentials: keep provider keys and other secrets in environment variables or the platform’s secret store, never in generated source files or chat messages.
- Review destructive actions: instruct the agent to ask before deleting files, resetting a database, changing firewall rules or running commands that alter data.
- Back up configuration: protect
~/.openclaw/openclaw.jsonand your project repository, while excluding secret values from any shared backup.
Remote hosting adds firewall, operating-system updates, SSH or console access and backup responsibilities. Treat a VPS as a production-like machine even while the app is only a prototype.
Turn OpenClaw into an app-building workflow
The most reliable results come from small, testable requests. Give the agent a deliverable, constraints and an acceptance check; then review the output before asking for the next change.
Phase 1: write a product brief
Start with a one-paragraph description of the user, problem and desired outcome. Ask the agent to list assumptions instead of silently choosing them.
Write a one-paragraph product brief for a small appointment-reminder web app.
List the target user, core problem, non-goals, assumptions and three acceptance criteria.
Do not create files yet.This prevents a vague request from becoming an oversized codebase and gives you a short reference for later decisions.
Phase 2: design the shape before coding
Ask for the screens, data entities, API boundaries and proposed file structure. Require the agent to identify what can remain local or mocked in the prototype.
Using the approved brief, propose:
1. The smallest useful screen flow
2. Data entities and required fields
3. API boundaries, including which calls can be mocked
4. A file tree with one-sentence purpose for each file
5. Risks and open decisions
Wait for approval before writing code.Review this plan for unnecessary accounts, payments, background jobs or integrations. Removing a feature at this stage is cheaper than removing it after implementation.
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Phase 3: generate a minimal prototype
Ask for one vertical slice: a user can open the app, perform its primary action and see a realistic result. Keep sample data local if a real backend is not required to validate the interface.
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Use the proposed file structure, keep secrets in environment variables,
and add a short README with install and run commands.
Do not add dependencies or features without explaining why first.Have the agent run the app locally, inspect build or runtime errors and explain each change. You should be able to start the prototype from a clean terminal before adding another feature.
Phase 4: add one feature at a time
For every change, name the behavior, files likely to change and a short acceptance checklist.
Add the calendar export feature only.
First describe the implementation and files you expect to touch.
Then implement it, run the existing checks, and report:
- commands run
- files changed
- known limitations
- acceptance checklist resultsKeep the conversation focused. A separate request for each feature leaves a clearer history and makes it easier to revert a bad change.
Phase 5: test and document
Ask OpenClaw to exercise the primary user path, inspect errors and update the README. For a prototype, manual checks are still valuable: open every screen, submit invalid input, reload the page and confirm that secrets are not printed in logs or committed files.
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Build a website prototype
A static or lightly connected website is a good first project because the feedback loop is short. Give OpenClaw a narrow page set and content model rather than “build a complete site.” Specify the viewport, accessible controls, sample content and what must work without a backend.
A practical sequence is:
- Ask for the brief and screen map.
- Generate the home page and one representative detail page with local sample data.
- Run the local site and fix layout, navigation and console errors.
- Add the real API boundary only after the interaction is understandable with mock data.
- Request an accessibility pass covering headings, labels, keyboard focus and contrast.
- Ask for a production checklist that separates code changes from deployment tasks.
Keep API keys, database URLs and signing secrets outside the repository. Have the agent create an environment-variable example file with names only, and verify that the real file is ignored by version control.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Prototype a mobile app
OpenClaw’s FAQ identifies mobile-app prototyping—outline, screens and an API plan—as a suitable first project. Treat the first milestone as an interaction prototype, not a store-ready release.
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Ask the agent to define the smallest navigation stack, screen states and data contract. Include loading, empty, offline and error states in the plan. If you do not yet have a mobile build environment, the agent can still produce screen specifications, component structure and an API plan; do not pretend that unbuilt screens have been tested on a device.
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Use skills, browser automation and multiple agents carefully
OpenClaw supports skills, browser automation, cron jobs, webhooks and multi-agent routing. These capabilities are useful after the basic single-agent loop is reliable.
Split work by responsibility
You can route research, implementation, testing and documentation to distinct agents or workspaces. Give each one a narrow role and pass explicit artifacts between them: a brief, a file list, test results or a release checklist. Isolation reduces accidental edits across unrelated tasks.
Automate only repeatable tasks
Browser automation and webhooks are appropriate for a deterministic action with a clear permission boundary. Cron jobs should run against a known workspace and produce logs you can inspect. Start with a manual invocation, confirm the output, then schedule it.
Keep an approval boundary
Automation should not silently publish code, send messages to broad channel lists or delete data. Require a human confirmation for external side effects and keep allowlists as narrow as the task permits.
Troubleshoot the common setup failures
| Symptom | Likely cause | What to do |
|---|---|---|
openclaw is not found |
The global npm binary directory is not on your shell PATH, or the installation did not finish. | Run node -v and npm prefix -g. Check that the global npm bin location is included in your PATH, restart the shell and run openclaw --version again. |
| Onboarding cannot complete a model request | No usable CLI login or API key was detected, or the selected provider credentials are invalid. | Confirm the Claude Code or Codex CLI login, or supply a valid key through the provider setup. Rerun openclaw onboard and wait for the wizard’s real-completion check to succeed. |
| The Control UI does not load locally | The Gateway is stopped or the browser is using a different address. | Run openclaw gateway status, start the Gateway using the platform installation method and open http://127.0.0.1:18789/ on the host machine. |
| A channel receives unwanted requests | The channel allowlist or group-mention rule is too broad. | Restrict permitted accounts and rooms in the OpenClaw configuration, require mentions where appropriate and test with a non-privileged account. |
| The agent edits the wrong project | The active workspace or agent context is ambiguous. | Use a dedicated workspace, state its path in the first message and ask the agent to report the path before making changes. |
| A prototype works once but fails after a restart | Dependencies, environment variables or the background service were not reproduced. | Use the README’s clean install and run steps, check that required variables are present, then inspect openclaw doctor and Gateway status before debugging application code. |
A repeatable maintenance checklist
- Record the Node.js version and OpenClaw CLI version used for the project.
- Run
openclaw doctorafter configuration edits or a host move. - Check
openclaw gateway statusafter reboots and service changes. - Review channel allowlists and group rules whenever a new user or room is added.
- Back up the project and configuration without copying provider secrets into shared storage.
- Update the host operating system and Node runtime on a schedule, testing the app after each change.
- Keep a short decision log for provider changes, workspace moves and automation permissions.
Once these checks are routine, OpenClaw becomes a practical AI-assisted build environment: the Gateway handles connections, the model handles coding tasks and you retain control over files, credentials, review and deployment.
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