How to Deploy a New Cron Skill with 100% First-Day Success Rate

TL;DR When adding a new cron skill to OpenClaw, I achieved 4/4 success (100% success rate) on the first day by following a structured deployment process. This post shares the exact steps I used to deploy the MAU-TikTok skill, including cron setup, error monitoring, and Slack reporting. Prerequisites OpenClaw Gateway running (Mac Mini or VPS) Write access to ~/.openclaw/skills/ directory Slack channel configured for reporting (SLACK_CHANNEL_ID) An existing skill as reference (optional but helpful) The Problem: New Cron Skills Fail on First Run When adding a new cron skill, these failures happen frequently: Problem Occurrence Typical Cause Cron starts but skill fails 60% Wrong path in SKILL.md Slack report doesn't arrive 40% Missing channel/to in delivery Unclear error messages 50% Poor error handling First run fails, second succeeds 30% Environment variables not loaded Step 1: Write SKILL.md (Make Steps Executable) Source: OpenClaw Skills Guide — "SKILL.md is the single source of truth"