ECC agent harness

ECC is an external operating layer that adds agent skills, commands, hooks, rules, and platform adapters. It is not a replacement for this catalog's generic planning, testing, or team-design skills. Choose one ECC installation method per harness; layering native plugins, manual copies, or legacy syncs can duplicate hooks, commands, and skills.

When to use this skill

• Install, configure, update, inspect, or recover ECC.
• Choose the native ECC path for Claude Code, Codex, Kimi Code, or another supported harness.
• Resolve an ECC plugin-scope conflict, duplicate installation, hook profile, or upgrade issue.
• Audit an existing ECC checkout or configuration before a mutation.