Patterns for building Home Assistant custom integrations that talk Modbus (TCP/RTU-over-TCP/serial): pymodbus device_id usage, safe polling/writing, pacing/backoff, encoding multi-register values, cached fallback, and translation-backed entities.
Install
npx skills add plebann/eastron_SDM_HA_integration --skill ha-modbus-integrationnpx skills add plebann/eastron_SDM_HA_integration --skill ha-modbus-integration -a claude-code -gnpx skills add plebann/eastron_SDM_HA_integration --skill ha-modbus-integration -a codex -ggemini skills install https://github.com/plebann/eastron_SDM_HA_integration.git --path .github/skills/ha-modbus-integrationgh skill install plebann/eastron_SDM_HA_integration ha-modbus-integrationgit clone --depth 1 https://github.com/plebann/eastron_SDM_HA_integration /tmp/plebann__eastron_SDM_HA_integration
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/plebann__eastron_SDM_HA_integration/.github/skills/ha-modbus-integration ~/.claude/skills/ha-modbus-integration # Claude Code
cp -R /tmp/plebann__eastron_SDM_HA_integration/.github/skills/ha-modbus-integration ~/.agents/skills/ha-modbus-integration # Codex, Cursor, Gemini CLI, Copilot, OpenCode