Waybar custom module: Claude Code session and weekly API usage

claude-usage.sh

#!/bin/bash
TOKEN=$(jq -r '.claudeAiOauth.accessToken' ~/.claude/.credentials.json 2>/dev/null)
if [ -z "$TOKEN" ] || [ "$TOKEN" = "null" ]; then
    echo '{"text": "CC: --", "tooltip": "Claude Code: no credentials", "class": "claude-error"}'
    exit 0
fi

USAGE=$(curl -sf \
    -H "Accept: application/json" \
    -H "Authorization: Bearer $TOKEN" \
    -H "anthropic-beta: oauth-2025-04-20" \
    "https://api.anthropic.com/api/oauth/usage" 2>/dev/null)

if [ -z "$USAGE" ]; then
    echo '{"text": "CC: --", "tooltip": "Claude Code: API error", "class": "claude-error"}'
    exit 0
fi

SESSION=$(echo "$USAGE" | jq -r '.five_hour.utilization // "?"')
WEEKLY=$(echo "$USAGE" | jq -r '.seven_day.utilization // "?"')
SESSION_RESET=$(echo "$USAGE" | jq -r '.five_hour.resets_at // ""' | xargs -I{} date -d {} '+%H:%M' 2>/dev/null)
WEEKLY_RESET=$(echo "$USAGE" | jq -r '.seven_day.resets_at // ""' | xargs -I{} date -d {} '+%b %d, %H:%M' 2>/dev/null)

CLASS="claude"
SESSION_INT=${SESSION%.*}
if [ "$SESSION_INT" -ge 80 ] 2>/dev/null; then
    CLASS="claude-high"
elif [ "$SESSION_INT" -ge 50 ] 2>/dev/null; then
    CLASS="claude-mid"
fi

TOOLTIP="Session: ${SESSION}% (resets ${SESSION_RESET})\nWeek: ${WEEKLY}% (resets ${WEEKLY_RESET})"
echo "{\"text\": \"Session: ${SESSION}% | Week: ${WEEKLY}%\", \"tooltip\": \"${TOOLTIP}\", \"class\": \"${CLASS}\"}"