vercel-cli-with-tokens

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# Vercel CLI with Tokens

Deploy and manage projects on Vercel using the CLI with token-based authentication, without relying on `vercel login`.

## Step 1: Locate the Vercel Token

Before running any Vercel CLI commands, identify where the token is coming from. Work through these scenarios in order:

### A) `VERCEL_TOKEN` is already set in the environment

```bash
printenv VERCEL_TOKEN
```

If this returns a value, you're ready. Skip to Step 2.

### B) Token is in a `.env` file under `VERCEL_TOKEN`

```bash
grep '^VERCEL_TOKEN=' .env 2>/dev/null
```

If found, export it:

```bash
export VERCEL_TOKEN=$(grep '^VERCEL_TOKEN=' .env | cut -d= -f2-)
```

### C) Token is in a `.env` file under a different name

Look for any variable that looks like a Vercel token (Vercel tokens typically start with `vca_`):

```bash
grep -i 'vercel' .env 2>/dev/null
```

Inspect the output to identify which variable holds the token, then export it as `VERCEL_TOKEN`:

```bash
export VERCEL_TOKEN=$(grep '^<VARIABLE_NAME>=' .env | cut -d= -f2-)
```

### D) No token found — ask the user

If none of the above yield a token, ask the user to provide one. They can create a Vercel access token at vercel.com/account/tokens.

---

**Important:** Once `VERCEL_TOKEN` is exported as an environment variable, the Vercel CLI reads it natively — **do not pass it as a `--token` flag**. Putting secrets in command-line arguments exposes them in shell history and process listings.

```bash
# Bad — token visible in shell history and process listings
vercel deploy --token "vca_abc123"

# Good — CLI reads VERCEL_TOKEN from the environment
export VERCEL_TOKEN="vca_abc123"
vercel deploy
```

## Step 2: Locate the Project and Team

Similarly, check for the project ID and team scope. These let the CLI target the right project without needing `vercel link`.

```bash
# Check environment
printenv VERCEL_PROJECT_ID
printenv VERCEL_ORG_ID

# Or check .env
grep -i 'vercel' .env 2>/dev/null
```

**If you have a project URL** (e.g. `https://vercel.com/my-team/my-project`), extract the team slug:

```bash
# e.g. "my-team" from "https://vercel.com/my-team/my-project"
echo "$PROJECT_URL" | sed 's|https://vercel.com/||' | cut -d/ -f1
```

**If you have both `VERCEL_ORG_ID` and `VERCEL_PROJECT_ID` in your environment**, export them — the CLI will use these automatically and skip any `.vercel/` directory:

```bash
export VERCEL_ORG_ID="<org-id>"
export VERCEL_PROJECT_ID="<project-id>"
```

Note: `VERCEL_ORG_ID` and `VERCEL_PROJECT_ID` must be set together — setting only one causes an error.

## CLI Setup

Ensure the Vercel CLI is installed and up to date:

```bash
npm install -g vercel
vercel --version
```

## Deploying a Project

Always deploy as **preview** unless the user explicitly requests production. Choose a method based on what you have available.

### Quick Deploy (have project ID — no linking needed)

When `VERCEL_TOKEN` and `VERCEL_PROJECT_ID` are set in the environment, deploy directly:

```bash
vercel deploy -y --no-wait
```

With a team scope (either via `VERCEL_ORG_ID` or `--scope`):

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

Production (only when explicitly requested):

```bash
vercel deploy --prod --scope <team-slug> -y --no-wait

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