When using the Copilot plugin in Eclipse, Copilot requires the IDE to have terminal-related dependencies installed in order to support the runInTerminal tool in Agent Mode.
If these dependencies are missing, Copilot will still function normally for most features, but runInTerminal cannot execute properly. When the IDE starts, you will see a dialog notifying you about the missing terminal dependencies.
If you do not plan to use the runInTerminal tool, you may choose "Don't show this message again", and this will not affect any other Copilot features.
This guide explains how to install the required terminal features to fully enable runInTerminal support.
In Eclipse, click Help → Install New Software…
In the Install dialog, find the Work with dropdown and select All Available Sites.
Use the search box to look for the correct terminal feature based on your IDE version:
| Eclipse IDE Version | Feature Name to Search |
|---|---|
| Before 2025-09 | TM Terminal |
| 2025-09 and later | Terminal Feature |
Before 2025-09
2025-09 and later
- Wait for the search results to load (this may take some time)
- Expand the result categories
- Select the correct terminal feature
- Click Next to download and install
Before 2025-09
2025-09 and later
After installation completes, Eclipse will prompt you to restart.
Once restarted, Copilot will work with full terminal support, and the runInTerminal tool will function normally.