Deploy To Vercel

---
name: deploy-to-vercel
description: "Deploy applications and websites to Vercel. Use when the user requests deployment actions like \"deploy my app\", \"deploy and give me the link\", \"push this live\", or \"create a preview deployment\"."
risk: critical
source: "https://github.com/vercel-labs/agent-skills"
date_added: "2026-06-02"
---

# Deploy to Vercel

Deploy any project to Vercel. **Always deploy as preview** (not production) unless the user explicitly asks for production.

The goal is to get the user into the best long-term setup: their project linked to Vercel with git-push deploys. Every method below tries to move the user closer to that state.

## When to Use
- Use this skill when the task matches this description: Deploy applications and websites to Vercel. Use when the user requests deployment actions like "deploy my app", "deploy and give me the link", "push this live", or "create a preview deployment".

## Step 1: Gather Project State

Run all four checks before deciding which method to use:

```bash
# 1. Check for a git remote
git remote get-url origin 2>/dev/null

# 2. Check if locally linked to a Vercel project (either file means linked)
cat .vercel/project.json 2>/dev/null || cat .vercel/repo.json 2>/dev/null

# 3. Check if the Vercel CLI is installed and authenticated
vercel whoami 2>/dev/null

# 4. List available teams (if authenticated)
vercel teams list --format json 2>/dev/null
```

### Team selection

If the user belongs to multiple teams, present all available team slugs as a bulleted list and ask which one to deploy to. Once the user picks a team, proceed immediately to the next step — do not ask for additional confirmation.

Pass the team slug via `--scope` on all subsequent CLI commands (`vercel deploy`, `vercel link`, `vercel inspect`, etc.):

```bash
vercel deploy [path] -y --no-wait --scope <team-slug>
```

If the project is already linked (`.vercel/project.json` or `.vercel/repo.json` exists), the `orgId` in those files determines the team — no need to ask again. If there is only one team (or just a personal account), skip the prompt and use it directly.

**About the `.vercel/` directory:** A linked project has either:
- `.vercel/project.json` — created by `vercel link` (single project linking). Contains `projectId` and `orgId`.
- `.vercel/repo.json` — created by `vercel link --repo` (repo-based linking). Contains `orgId`, `remoteName`, and a `projects` array mapping directories to Vercel project IDs.

Either file means the project is linked. Check for both.

**Do NOT** use `vercel project inspect`, `vercel ls`, or `vercel link` to detect state in an unlinked directory — without a `.vercel/` config, they will interactively prompt (or with `--yes`, silently link as a side-effect). Only `vercel whoami` is safe to run anywhere.

## Step 2: Choose a Deploy Method

### Linked (`.vercel/` exists) + has git remote → Git Push

A local link plus a Git remote does not prove Vercel Git integration. Verify the linked project, target directory, connected repository and production branch in the dashboard. Use a preview branch or a direct preview deployment; never push a production branch for a preview request.

1. **Ask the user before pushing.** Never push without explicit approval:
   ```
   This project is connected to Vercel via git. I can commit and push to
   trigger a deployment. Want me to proceed?
   ```

2. **Commit and push:**
   ```bash
   git add -- <reviewed-project-paths>
   git commit -m "deploy: <description of changes>"
   git push
   ```
   Vercel automatically builds from the push. Non-production branches get preview deployments; the production branch (usually `main`) gets a production deployment.

3. **Retrieve the preview URL.** If the CLI is authenticated:
   ```bash
   sleep 5
   vercel ls --format json
   ```
   The JSON output has a `deployments` array. Match the project, commit SHA, branch and deployment target; the latest entry could belong to another build. A queued URL is not a successful build.

   If the CLI is not authenticated, tell the user to check the Vercel dashboard or the commit status checks on their git provider for the preview URL.

---

### Linked (`.vercel/` exists) + no git remote → `vercel deploy`

The project is linked but there's no git repo. Deploy directly with the CLI.

```bash
vercel deploy [path] -y --no-wait
```

Use `--no-wait` so the CLI returns immediately with the deployment URL instead of blocking until the build finishes (builds can take a while). Then check on the deployment status with:

```bash
vercel inspect <deployment-url>
```

For production deploys (only if user explicitly asks):
```bash
vercel deploy [path] --prod -y --no-wait
```

---

### Not linked + CLI is authenticated → Link first, then deploy

The CLI is working but the project isn't linked yet. This is the opportunity to get the user into the best state.

1. **Ask the user which team to deploy to.** Present the team slugs from Step 1 as a bulleted list. If there's only one team (or just a personal account), skip this step.

2. **Once a team is selected, proceed directly to linking.** Tell the user what will happen but do not ask for separate confirmation:
   ```
   Linking this project to <team name> on Vercel. This will create a Vercel
   project to deploy to and write local link metadata. Git auto-deployment requires a separately configured Git integration.
   ```

3. **If a git remote exists**, use repo-based linking with the selected team scope:
   ```bash
   vercel link --repo --scope <team-slug>
   ```
   This reads the git remote URL and matches it to existing Vercel projects that deploy from that repo. It creates `.vercel/repo.json`. This is much more reliable than `vercel link` (without `--repo`), which tries to match by directory name and often fails when the local folder and Vercel project are named differently.

   **If there is no git remote**, fall back to standard linking:
   ```bash
   vercel link --scope <team-slug>
   ```
   This prompts the user to select or create a project. It creates `.vercel/project.json`.

4. **Then deploy using the best available method:**
   - If a git remote exists → commit and push (see git push method above)
   - If no git remote → `vercel deploy [path] -y --no-wait --scope <team-slug>`, then `vercel inspect <url>` to check status

---

### Not linked + CLI not authenticated → Install, auth, link, deploy

The Vercel CLI isn't set up at all.

1. **Install the CLI (if not already installed):**
   ```bash
   npm install -g vercel
   ```

2. **Authenticate:**
   ```bash
   vercel login
   ```
   The user completes auth in their browser. If running in a non-interactive environment where login is not possible, skip to the **no-auth fallback** below.

3. **Ask which team to deploy to** — present team slugs from `vercel teams list --format json` as a bulleted list. If only one team / personal account, skip. Once selected, proceed immediately.

4. **Link the project** with the selected team scope (use `--repo` if a git remote exists, plain `vercel link` otherwise):
   ```bash
   vercel link --repo --scope <team-slug>   # if git remote exists
   vercel link --scope <team-slug>          # if no git remote
   ```

5. **Deploy** using the best available method (git push if remote exists, otherwise `vercel deploy -y --no-wait --scope <team-slug>`, then `vercel inspect <url>` to check status).

---

### No-Auth Fallback — claude.ai sandbox

**When to use:** Last resort when the CLI can't be installed or authenticated in the claude.ai sandbox. This requires no authentication — it returns a **Preview URL** (live site) and a **Claim URL** (transfer to your Vercel account).

```bash
bash /mnt/skills/user/deploy-to-vercel/resources/deploy.sh [path]
```

**Arguments:**
- `path` - Directory to deploy, or a `.tgz` file (defaults to current directory)

**Examples:**
```bash
# Deploy current directory
bash /mnt/skills/user/deploy-to-vercel/resources/deploy.sh

# Deploy specific project
bash /mnt/skills/user/deploy-to-vercel/resources/deploy.sh /path/to/project

# Deploy existing tarball
bash /mnt/skills/user/deploy-to-vercel/resources/deploy.sh /path/to/project.tgz
```

The helper guesses the framework and uploads an archive to the hosted endpoint shown in the script. Obtain authorization for that recipient and inspect the complete archive first: its small exclusion list is not a secret scanner and does not implement .gitignore/.vercelignore. A supplied archive is uploaded byte-for-byte. Returned URLs do not establish build success.

**Tell the user:** "Deployment submitted at [previewUrl]; build status is unverified. The private claim link is [claimUrl]."

---

### No-Auth Fallback — Codex sandbox

**When to use:** In the Codex sandbox where the CLI may not be authenticated. Codex runs in a sandboxed environment by default — try the CLI first, and fall back to the deploy script if auth fails.

1. **Check whether the Vercel CLI is installed** (no escalation needed for this check):
   ```bash
   command -v vercel
   ```

2. **If `vercel` is installed**, try deploying with the CLI:
   ```bash
   vercel deploy [path] -y --no-wait
   ```

3. **If `vercel` is not installed, or the CLI fails with "No existing credentials found"**, use the fallback script:
   ```bash
   skill_dir="<path-to-skill>"

   # Deploy current directory
   bash "$skill_dir/resources/deploy-codex.sh"

   # Deploy specific project
   bash "$skill_dir/resources/deploy-codex.sh" /path/to/project

   # Deploy existing tarball
   bash "$skill_dir/resources/deploy-codex.sh" /path/to/project.tgz
   ```

The same archive-review and recipient-authorization requirements apply. The script submits the archive and returns JSON; it does not verify the build. Keep the claim URL private to the requesting owner.

**Tell the user:** "Deployment submitted at [previewUrl]; build status is unverified. The private claim link is [claimUrl]."

**Escalated network access:** Follow the active environment approval policy if sandboxing blocks the actual deployment; no skill can authorize bypassing it. Do **not** escalate the `command -v vercel` check.

---

## Agent-Specific Notes

### Claude Code / terminal-based agents

You have full shell access. Do NOT use the `/mnt/skills/` path. Follow the decision flow above using the CLI directly.

For the no-auth fallback, run the deploy script from the skill's installed location:
```bash
bash ~/.claude/skills/deploy-to-vercel/resources/deploy.sh [path]
```
The path may vary depending on where the user installed the skill.

### Sandboxed environments (claude.ai)

You likely cannot run `vercel login` or `git push`. Go directly to the **no-auth fallback — claude.ai sandbox**.

### Codex

Codex runs in a sandbox. Check if the CLI is available first, then fall back to the deploy script. Go to the **no-auth fallback — Codex sandbox**.

---

## Output

Always show the user the deployment URL.

- **Git push:** Use `vercel ls --format json` to find the preview URL. If the CLI isn't authenticated, tell the user to check the Vercel dashboard or commit status checks.
- **CLI deploy:** Show the URL returned by `vercel deploy --no-wait`. Use `vercel inspect <url>` to check build status and report it to the user.
- **No-auth fallback:** Show both the preview URL and the claim URL:
  ```
  Deployment submitted; verify build status before calling it successful.

  Preview URL: https://my-app-abc123.vercel.app
  Claim URL:   https://vercel.com/claim-deployment?code=...

  View your site at the Preview URL.
  To transfer this deployment to your Vercel account, visit the Claim URL.
  ```

Verify the matched deployment status through the authenticated CLI/dashboard. Report pending or failed status truthfully; a URL alone is not live verification. Only fetch an expected project-owned HTTPS URL after checking its origin.

---

## Troubleshooting

### Network Egress Error (claude.ai)

If deployment fails due to network restrictions on claude.ai, tell the user:

```
Deployment failed due to network restrictions. To fix this:

1. Go to https://claude.ai/settings/capabilities
2. Add *.vercel.com to the allowed domains
3. Try deploying again
```

### Escalated Network Access (Codex / sandboxed environments)

If deployment fails due to network issues (timeouts, DNS errors, connection resets) in a sandboxed environment, follow the active environment approval policy; a timeout alone does not prove sandbox blocking. Never bypass a denied network policy. Do not escalate the initial CLI availability check — only escalate the actual deploy command.

Example guidance to the user:
```
The deploy needs escalated network access to deploy to Vercel. I can rerun
the command with escalated permissions — want me to proceed?
```

### CLI Auth Failure

If `vercel login` or `vercel deploy` fails with authentication errors, fall back to the no-auth deploy script (claude.ai or Codex variant, depending on the environment).

## Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.