Zed + xCloud

Run Docker apps with Zed on xCloud

Running Docker apps with Zed means asking the Agent Panel in the editor where your Compose project is open to scan it, deploy it to an xCloud Docker server after you approve and keep it backed up.

Skill: xcloud:deploy
Toolsets: sites, servers
Free with every xCloud account

Set up Zed All Zed guides

YouUse xCloud to scan this project's compose file and show me the ports.

git_compose-scanread-only

Agentapp publishes 3000, redis publishes nothing. Suggested port 3000, free on Frankfurt. Run the dry run?

YouYes, on a staging hostname.

servers_sites_git_dockerdry run

AgentDry run clean: docker-compose.yml, port 3000. Confirm in the panel and I will send the real create.

Last updated: October 2026. Keep a human in the loop: xCloud stops and asks before anything that creates, deploys, updates, reboots, deletes or buys.

Setup

How Do You Set Up Zed to Run Docker apps on xCloud?

Connect Zed once; every job on this account uses the same connection. Then ask in plain words.

1
Add xCloud as a remote server
Open Settings, then AI, then MCP Servers, click Add Server and choose Add Remote Server. Or run the zed: open settings file action and add this to settings.json yourself. Zed writes the same entry either way.
JSON
```
{
  "context_servers": {
    "xcloud": {
      "url": "https://app.xcloud.host/mcp"
    }
  }
}
```
2
Sign in and check the dot
Because the entry has no Authorization header, Zed prompts you to authenticate through the MCP OAuth flow. Approve the teams and the access level in the browser. In Settings, AI, MCP Servers a green dot next to xcloud with the tooltip Server is active means it worked. Then ask this in the Agent Panel.
Prompt
```
Who am I on xCloud?
```
3
No browser sign-in? Use an API key
Create a token with the mcp:invoke scope plus the read abilities for the areas it will use (read:servers and read:sites, with read:billing and read:addons for billing and add-on tools) and the matching write: abilities if it should change things in Settings, Developers, API Tokens and add it as a header. With an Authorization header set, Zed skips its OAuth prompt. Replace YOUR_TOKEN with the token, which contains a pipe character, and keep it out of git and out of chat.
JSON
```
{
  "context_servers": {
    "xcloud": {
      "url": "https://app.xcloud.host/mcp",
      "headers": { "Authorization": "Bearer YOUR_TOKEN" }
    }
  }
}
```

Check it worked

Then ask Zed for the job itself, for example:

Prompt

Use xCloud to scan the docker-compose.yml in this project and list the services and ports it would use.

In practice

How Does Docker apps Work from Zed?

Zed shows you the tool call before it happens, which suits a job that has a real consequence at the end. With agent.tool_permissions.default left on confirm, every xCloud call in the Agent Panel asks first. Name the server in your request, because Zed notes that MCP tools are called less reliably when the model is not told where to look: use xCloud to scan the docker-compose.yml in this project, then show me the ports. The panel runs git_detect and git_compose-scan, and what comes back is the services and the host ports the file publishes, with a suggested port.

The file is already in an editor tab, so a mismatch is easy to act on. If a service binds 80:80, or the file publishes nothing and xCloud would answer 502, the agent proposes the edit as a change you accept in the buffer, such as publishing 127.0.0.1:8080:8080. Commit and push it, because xCloud runs the Compose file from the repository and does not rewrite the ports mapping. Then ask for the deploy. The Docker create runs as a dry run and prints the compose file, the port and the address. You approve in Zed's prompt, and xCloud asks for its own confirmation before the confirmed call, so a deploy is two clear yeses.

Servers you add under context_servers are also forwarded to External Agents, which means a command-line agent running inside Zed can use the same xCloud tools. For backups, ask the panel to take a Docker backup before you change the image tag, then read the list until it completes. The app stops while the snapshot runs. A restore replaces data in place, so Zed gives you the dashboard path and leaves it to you.

Zed specific: Say use xCloud in your prompt, or the model may not reach for the MCP tools at all. Keep agent.tool_permissions.default on confirm for this job, because a deploy and a backup both change a live app; from Zed v0.224.0 that setting replaced agent.always_allow_tool_actions. To allow only the reads, Zed's per-tool key format is mcp:xcloud:git_compose-scan, with xcloud being the name of your context_servers entry.

What xCloud does for docker apps

xCloud reads the repository, scans the Compose file for services and ports before anything is created, previews the site with a dry run and deploys it behind its own nginx once you approve. Docker sites can be backed up on demand and on a schedule, and a failed deploy is diagnosed and retried on the same site.

Pick a Docker server. The agent uses the server you name, or lists your servers and asks. A Docker deploy needs a Docker server; any other stack answers with an incompatible_server refusal, and an agentic server never takes a second site. WordPress is not supported on Docker servers.
Detect the repository. git_detect reads the repository root for a Dockerfile or one of the four Compose file names, and checks access and server compatibility. It creates nothing, and an access problem is never worked around by naming an app type by hand.
Scan the Compose file. git_compose-scan runs before the dry run. It lists the services and the host ports the file publishes, resolves which Compose file name it found, and suggests a primary port. The agent never guesses the port.
Dry run, then one approval. The agent sends the Docker create request with dry_run set to true and shows the resolved configuration: compose file, port, address and warnings. It asks once, naming the server and the URL, before sending the same body with confirm set to true and an idempotency key.
Poll and verify. A 202 means queued, not running. The agent polls the site status until it is terminal, reads failed_steps and the SSL block, and fetches the URL before it calls the app live. A 502 here usually means the Compose file publishes no port.
Back up and recover. The agent can take a Docker backup, read the backup list and settings, and add a note to a backup. If a deploy fails it reads the diagnosis, proposes a fix from the correctable fields and retries on the same site after your approval. Restoring a backup is a dashboard step.

Reference

Docker apps Settings and Limits on xCloud

The facts Zed works within when it runs Docker apps. Where a row names the dashboard, that step stays yours to take there.

Setting or limit	What applies
Supported inputs	A Dockerfile for a single container, or a Compose file for one or more services, on a Docker server. Go, Python, Rust and Java apps all deploy this way
Server stack	Docker servers only. The Docker deploy on any other stack, including an agentic server, answers 422 with the code incompatible_server
Which Compose file runs	docker-compose.yml at the repository root. A file named compose.yaml, compose.yml or docker-compose.yaml, or one in a subdirectory, deploys through the pinned Docker create with docker.compose_file set to the path the scan resolved
Public port	xCloud's nginx owns ports 80 and 443 and proxies to one host port of 1024 or higher on 127.0.0.1. xCloud runs your Compose file as-is and never rewrites its ports mapping
Port refusals	A port another site already holds is refused as port_unavailable. A port the file does not publish is refused as port_not_published, with the published ports listed
No published port	A Compose file that publishes no port is accepted and then answers 502, so the scan is the step that catches it
Private registries	The deploy runs docker compose pull and never docker login, so an image from a private registry cannot be pulled. Build the image from source instead
Environment and redeploys	Send environment values through env_file_content. A redeploy runs git reset --hard and git clean -df in the site directory, so uncommitted server-side changes are lost
What a Docker backup holds	Named volumes, eligible bind mounts, the Compose file and the app's .env, in an encrypted snapshot. The app is stopped while the backup captures and restarted afterwards
Backup tools	Take a backup, list backups, read the count and the settings, change the settings, add a note and delete a backup. Remote copies go to a storage provider you add in the dashboard
Restores	A restore replaces the app's data in place, so it stays a dashboard step: Site, Site Backup, Previous Backups, Restore Backup
Dot-prefixed paths	A 403 on a path that starts with a dot is the dot-path allowlist. It is fixed with docker.allowed_dot_paths in the deploy settings, without a rebuild

Rules Zed has to follow

The Compose file is scanned before the dry run, and the port always comes from the scan, never from a guess.
A file that binds ports 80 or 443, publishes no port or pulls from a private registry is not deployed as-is. The agent shows the rewrite, such as publishing 127.0.0.1:<high port>:<app port> and building the image from source, and the change goes into your repository.
Creating a site, deploying, redeploying and deleting a backup stop for your approval. A backup runs without a separate prompt but stops the app while it captures, so ask for one at a quiet time.
A failed Docker site is retried in place with corrections. It is never deleted and recreated, because it keeps its domain and port.
Restoring a backup, adding a backup storage provider and changing a live site's domain are dashboard steps; the agent gives you the path and the dashboard link xCloud returned.

Example prompts

What Can You Ask Zed to Do for Docker apps?

Type these as written and swap in your own repository, site and server names. Reads and routine actions such as backups, cache purges, PageSpeed scans and vulnerability scans run straight away; creating, deploying, updating, rebooting, deleting, buying or starting a broken-link scan stops and asks first.

Prompt

Use xCloud to scan the docker-compose.yml in this project and list the services and ports it would use.

Prompt

Use xCloud to deploy this project to my Frankfurt Docker server as a Compose app. Show the dry run and wait for my approval.

Prompt

Use xCloud to take a backup of the Docker app on notes.example.com and check the backup list until it shows completed.

Prompt

Scan the docker-compose.yml in github.com/acme/api and tell me which services and ports xCloud would use.

Prompt

Deploy github.com/acme/shop to the Frankfurt Docker server as a Compose app. Scan the compose file first, show me the services and ports, then wait for my approval before creating anything.

Prompt

Deploy the main branch of github.com/acme/api to my Docker server as a Compose app on a staging hostname.

Prompt

My Compose app on notes.example.com answers 502. Check which port its compose file publishes and which port xCloud is using.

Prompt

Take a backup of the Docker app on notes.example.com now, before I upgrade it, and tell me when it is done.

Prompt

Show the backup settings and the last backup of every Docker app on this team, and list the ones with no schedule.

Prompt

The last deploy of the API site failed. Diagnose it, show me the settings I can correct, fix the build command and retry on the same site.

Zed and Docker apps: Frequently Asked Questions

What people ask before they let Zed run Docker apps through xCloud.

Why does Zed ask me and xCloud ask me before a Docker deploy?

They are two separate checks. Zed's tool permission setting asks before the agent runs an MCP tool, and xCloud refuses a deploy unless the call carries an explicit confirmation. The first guards your editor session, the second guards your server.

Can an External Agent in Zed use the same xCloud Docker tools?

Yes. Zed forwards the MCP servers you configure under context_servers to External Agents, so a command-line agent running inside Zed can scan and deploy through the same xcloud entry without a second setup.

Which servers can run a Docker app on xCloud?

Docker servers. Node.js, PHP and static builds use Nginx or OpenLiteSpeed servers, and the Docker deploy on any other stack is refused with an incompatible_server code. An OpenClaw, Hermes, Paperclip or DeepSeek Harness server hosts only the site created at provisioning, so it takes no Docker app.

Why does the agent scan the Compose file before deploying?

xCloud proxies to the host port your file publishes and never rewrites it. The scan lists the services and ports, so the agent picks a port that is free on the server and published by the file instead of guessing.

Why does my Compose app answer 502 after it deployed?

The most common cause is a Compose file that publishes no port: xCloud accepts it, then its nginx has nothing to proxy to. Publish the app on 127.0.0.1 with a high port, such as 127.0.0.1:8080:8080, and redeploy.

Can an agent deploy an image from a private registry?

Not as-is. The deploy runs docker compose pull and never docker login, so a private image cannot be pulled. Build the image from source in the Compose file, or deploy a repository that does.

Can an agent back up and restore a Docker app?

It can take a backup, read the backup list and settings, change the settings, add a note and delete a backup. Restoring replaces the app's data in place, so you do that in the dashboard under Site, Site Backup, Previous Backups.

Can I run WordPress as a Docker app on xCloud?

No. Creating a WordPress site on a Docker server is refused because WordPress is not supported on Docker servers. Use an Nginx or OpenLiteSpeed server for WordPress.

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