Workflow

1. Dump current configuration before mutating values.
2. Edit the narrowest possible key path.
3. Re-dump the affected key to confirm the write.
4. Explain precedence impacts from flags and environment variables.

Command Coverage

• arduino-cli config init
• arduino-cli config dump
• arduino-cli config get <key>
• arduino-cli config set <key> <value>
• arduino-cli config add <key> <value>
• arduino-cli config remove <key> <value>
• arduino-cli config delete <key>

Safety Rules

• Back up config files before broad deletes.
• Use config get after each targeted update.

ICL Examples (Captured 2026-02-14)

1. Initialize and inspect config in an isolated workspace.

arduino-cli --config-dir /tmp/arduino_cli_suite_icl_data config init --overwrite
arduino-cli --config-dir /tmp/arduino_cli_suite_icl_data config dump

Observed output included:

Config file written to: /tmp/arduino_cli_suite_icl_data/arduino-cli.yaml
board_manager:
    additional_urls: []

2. Add and remove an additional board-manager URL safely.

arduino-cli --config-dir /Volumes/trent/Documents/Arduino/Arduino_CLI_Codex_Skills/tmp/icl_capture/arduino_data config add board_manager.additional_urls https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
arduino-cli --config-dir /Volumes/trent/Documents/Arduino/Arduino_CLI_Codex_Skills/tmp/icl_capture/arduino_data config get board_manager.additional_urls
arduino-cli --config-dir /Volumes/trent/Documents/Arduino/Arduino_CLI_Codex_Skills/tmp/icl_capture/arduino_data config remove board_manager.additional_urls https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

Observed config get first returned the URL, then returned [] after removal.