Claude OAuth Auto-Renewal

# Claude Code OAuth Auto-Renewal

Automatically detect and renew expired Claude Code OAuth tokens during OpenClaw heartbeat cycles. Prevents agent downtime caused by token expiration.

When to Use

✅ USE this skill when:

• Your OpenClaw agent uses Claude Code as the AI provider
• You want uninterrupted agent operation without manual token renewal
• You're running OpenClaw on macOS with Chrome browser

How It Works

3-Tier Renewal Strategy

``` Heartbeat triggers check-claude-oauth.sh │ ├─ Token healthy (>6h remaining) → silent exit ✓ │ ├─ Tier 1: claude auth status (refresh token) │ ├─ Success → silent exit ✓ │ └─ Fail ↓ │ ├─ Tier 2: Browser automation (osascript + Chrome JXA) │ ├─ Start claude auth login │ ├─ Auto-click "Authorize" on claude.ai │ ├─ Extract auth code from callback page │ ├─ Feed code back to CLI via expect │ ├─ Success → silent exit ✓ │ └─ Fail ↓ │ └─ Tier 3: Alert user → agent notifies via configured channel ```

Token Storage

Claude Code stores OAuth tokens in macOS Keychain under the service name `Claude Code-credentials`. The token JSON includes:

• `accessToken` — API access token (prefix `sk-ant-oat01-`)
• `refreshToken` — Used for automatic renewal (prefix `sk-ant-ort01-`)
• `expiresAt` — Unix timestamp in milliseconds

Prerequisites

1. macOS with `security` CLI (Keychain access)
2. Claude Code installed and previously authenticated
3. Google Chrome with `View → Developer → Allow JavaScript from Apple Events` enabled (for Tier 2)
4. python3 available in PATH
5. expect available (ships with macOS)

Setup

1. Copy the script

```bash cp skills/claude-oauth-renewal/scripts/check-claude-oauth.sh scripts/check-claude-oauth.sh chmod +x scripts/check-claude-oauth.sh ```

2. Add to HEARTBEAT.md

Add as the first step in your heartbeat execution:

```markdown ## Execution Order

1. Run `bash scripts/check-claude-oauth.sh` — if output exists, relay as highest priority alert
2. (your other heartbeat checks...)
3. ```

3. Test

```bash # Normal check (silent if token healthy) bash scripts/check-claude-oauth.sh

# Force trigger by setting high threshold WARN_HOURS=24 bash scripts/check-claude-oauth.sh ```

Configuration

| Environment Variable | Default | Description | |---------------------|---------|-------------| | `WARN_HOURS` | `6` | Hours before expiry to start renewal attempts |

Troubleshooting

"无法读取 Claude Code token" - Run `claude auth login` manually to establish initial credentials - Verify keychain access: `security find-generic-password -s "Claude Code-credentials" -a "$(whoami)" -g`

Tier 2 (browser automation) not working - Enable Chrome JXA: `View → Developer → Allow JavaScript from Apple Events` - Or via CLI: `defaults write com.google.Chrome AppleScriptEnabled -bool true` (restart Chrome) - Ensure you're logged into claude.ai in Chrome

JSON parsing errors - The script uses regex extraction (not `json.loads`) to handle truncated keychain output - If `security -w` truncates long values, the `-g` flag is used as fallback

Notes

• Tier 1 (refresh token) handles most cases silently
• Tier 2 (browser) is only needed when refresh token itself expires (typically weeks)
• Tier 3 (alert) is the last resort when no automated renewal is possible
• The script never stores or logs actual token values