cyrus-setup-endpoint

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• SKILL.md

SKILL.md (first lines)

**CRITICAL: Never use `Read`, `Edit`, or `Write` tools on `~/.cyrus/.env` or any file inside `~/.cyrus/`. Use only `Bash` commands (`grep`, `printf >>`, etc.) to interact with env files — secrets must never be read into the conversation context.**

# Setup Endpoint

Configures a public URL so Linear (and other integrations) can send webhooks to your Cyrus instance.

## Step 1: Check Existing Configuration

```bash
grep -E '^CYRUS_BASE_URL=' ~/.cyrus/.env 2>/dev/null
```

If `CYRUS_BASE_URL` is already set, inform the user:

> Webhook endpoint already configured: `<value>`
> To reconfigure, remove `CYRUS_BASE_URL` from `~/.cyrus/.env` and re-run this skill.

Skip to Step 4 (write port/webhooks if missing).

## Step 2: Choose Endpoint Method

Ask the user:

> **How will you expose Cyrus to the internet for webhooks?**
>
> 1. **ngrok** (recommended — every free account includes one static domain that persists across restarts)
> 2. **Cloudflare Tunnel** (permanent, requires Cloudflare account)
> 3. **Own URL** (you already have a public URL/domain)

**Important:** ngrok's free tier includes a permanent static domain — do NOT tell the user this is a paid feature or that URLs change on restart. Every free ngrok account gets one static domain at https://dashboard.ngrok.com/domains.

## Step 3: Configure Endpoint

### Option 1: ngrok

#### 3a. Check if ngrok is installed

```bash
which ngrok
```

If not installed, provide install instructions:

**macOS:**
```bash
brew install ngrok
```

**Linux:**
```bash
curl -sSL https://ngrok-agent.s3.amazonaws.com/ngrok-v3-stable-linux-amd64.tgz | sudo tar xvz -C /usr/local/bin
```

#### 3b. Guide ngrok domain setup

Instruct the user:

> ngrok provides a free static domain so your URL doesn't change between restarts.
>
> 1. Sign up or log in at https://dashboard.ngrok.com
> 2. Go to https://dashboard.ngrok.com/domains
> 3. Copy your free static domain (e.g., `your-name-here.ngrok-free.app`)
> 4. Go to https://dashboard.ngrok.com/get-started/your-authtoken and copy your authtoken

Ask the user to provide:
- Their ngrok domain
- Their ngrok authtoken

**CRITICAL: The authtoken is a secret. Use clipboard-to-file commands.**

#### 3c. Write ngrok configuration

Write the ngrok config so it can be started with `ngrok start cyrus`:

```bash
mkdir -p ~/.config/ngrok
```

Then write `~/.config/ngrok/ngrok.yml` (merge with existing if present):

```yaml
version: 3
agent:
  authtoken: <token>
endpoints:
  - name: cyrus
    url: <domain>
    upstream:
      url: 3456
```

For the authtoken, use a clipboard-to-file approach:

**macOS:**
```bash
# User copies authtoken, then runs:
NGROK_TOKEN=$(pbpaste) && cat > ~/.config/ngrok/ngrok.yml << EOF
version: 3
agent:
  authtoken: $NGROK_TOKEN
endpoints:
  - name: cyrus
    url: <domain>
    upstream:
      url: 3456
EOF
```

**Universal fallback:**
```bash
read -s -p "Paste your ngrok authtoken: " NGROK_TOKEN && cat > ~/.config/ngrok/ngrok.yml << EOF
version: 3
agent:
  authtoken: $NGROK_TOKEN
endpoints:
  - name: cyrus
    url: <domain>
    upstream:
      url: 3456

From Army161/cyrus, Apache-2.0.

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