The Eclipse Theia Community Release 2026-02

We are happy to announce the thirteenth Eclipse Theia community release, “2026-02,” incorporating the latest advances from Theia releases 1.67 and 1.68.

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Community releases are provided quarterly and serve as stable anchors for downstream adopters. Each combines features, fixes, and hardening from monthly releases. Learn more about the advantages of the community release, or visit Theia’s releases page.

Now let’s explore the key highlights from this thirteenth Theia community release!

Highlights of the Theia 2026-02 Community Release

This community release ships cumulative improvements from releases 1.67 and 1.68, in total 167 improvements. For a comprehensive list of changes, please see the individual announcements. Here are some top highlights:

GitHub Copilot Language Model Integration

A noteworthy addition in this release is the GitHub Copilot integration for the Theia IDE and any tool built on Theia AI. Users with an existing GitHub Copilot subscription can now leverage their investment directly—no additional API keys or subscriptions required. Simply authenticate with GitHub, and Copilot models become available for all AI features, from chat assistance to code generation and beyond.

The new @theia/ai-copilot package features complete OAuth device flow authentication, a status bar indicator for authentication state, and dedicated commands for login/logout and model management.

Agent Skills: Reusable Knowledge for AI Agents

Theia 1.68 introduces support Agent Skills—a specification that allows AI agents to access reusable instructions and domain knowledge from SKILL.md files. Skills are directories containing a SKILL.md file with YAML frontmatter (defining name and description) and markdown content that provides specialized instructions. The system automatically discovers skills from configured directories and the ~/.theia/skills/ location, and users can invoke specific skills via slash commands like /skillName.

Complementing this, the new CreateSkill agent lets users create project-specific skills directly through the AI chat interface—simply describe the skill you want, and the agent generates a properly structured SKILL.md file.

Shell Execution for AI Agents

A new shellExecute tool enables AI agents to run shell commands on the host system with comprehensive safety measures. This capability opens up significant possibilities for autonomous agent workflows while maintaining user control through a detailed confirmation system that shows every command before execution.

The tool includes configurable timeouts, working directory support, and intelligent output truncation. For security, it defaults to requiring confirmation even if the global tool confirmation setting is “Always Allow.”

Enhanced Agent Modes & Planning

Both the Coder and Architect agents received significant upgrades in how they operate. The new Agent Mode for Theia Coder represents a major evolution in autonomous coding—with refined prompts and tool function improvements, the agent is more effective, reliable, and autonomous. It also integrates with the new todo tool, providing visual task tracking as the agent works through complex, multi-step implementations.

The Architect’s Plan Mode has been enhanced with new task context functions, allowing direct creation and management of implementation plans. Multiple plans per session are supported, each with its own “Execute with Coder” action. Users can easily switch between these modes using the new mode selector in the chat input UI, or by pressing Shift+Tab.

AppTester & Automated Testing Workflow

The AppTester agent received significant enhancements with a new variant powered by the DevTools MCP server. A new /with-apptester slash command creates a fully automated implement-and-test workflow—when using Coder in agent mode, add this command to your request and the agent will implement the feature, then automatically delegate to AppTester for verification. If tests don’t pass, the agents iterate to fix issues, creating a complete automated development loop.

Terminal Manager

Theia 1.67 introduces a long-requested feature: the Terminal Manager. This new terminal-manager extension enables managing multiple terminals within a single view, with vertical and horizontal splitting, tree-based navigation, terminal renaming, and drag-and-drop reorganization. Enable it via the terminal.grouping.mode preference set to tree for a more organized terminal workflow.

New Slash Commands & GitHub Workflows

Building on the slash command system introduced in Theia 1.66, this release adds several powerful new slash commands for streamlined development workflows. The /analyze-gh-ticket command retrieves GitHub issue details and creates implementation plans. /fix-gh-ticket goes further by actually implementing solutions. /address-gh-review processes all review comments from a pull request and implements the necessary changes.

The /remember command addresses a common pain point: preserving important project context from conversations. It analyzes chat history and extracts key information—corrections, clarifications, and project-specific details—then delegates to the Project Info agent to update the project context file for future interactions.

For a deeper walkthrough of how slash commands automate AI workflows, check out our dedicated blog post and demo video.

Claude Code Session Forking

The Claude Code integration now supports automatic session forking when users edit previous requests in a conversation. This enables exploring alternative conversation paths while preserving the original thread—particularly useful when iterating on AI-assisted coding tasks. Edit a previous request, and Theia automatically branches into a new session while keeping the original accessible.

Debugging Improvements

This release delivers a comprehensive set of debugging enhancements across both included versions. Lazy debug variables are now properly supported with a dedicated resolve button, breakpoint management has been enhanced with inline edit and remove actions, and variables view state is now preserved when stepping through code. Debug toolbar keybindings are now visible in tooltips, making it easier to learn keyboard shortcuts.

From Theia 1.68, the debug console now preserves output after sessions end and adds a text filter supporting include and exclude patterns—addressing a common pain point where valuable debugging information was lost when sessions terminated.

Improved Onboarding & AI Configuration

First-time users benefit from a significantly improved onboarding experience with guided welcome screens that walk through setup, model configuration, and default agent selection. The AI Configuration view received a significant UI overhaul with improved consistency and better responsiveness across all configuration screens.

Additional Highlights

This release includes many more improvements: VS Code Extension API compatibility upgraded to version 1.108.0, the SCM view now displays action buttons contributed by providers like the built-in Git extension, default LLM models have been updated to include GPT-5.2 and Gemini Flash 3, Gemini integration updated with proper thinking feature support, code editing accuracy improved with the enhanced file replacer becoming the default, Electron startup crash fix for Wayland environments, chat session storage scoped per workspace, enhanced chat accessibility with keyboard navigation and ARIA attributes, and multiple merge editor bug fixes.

For a comprehensive breakdown, please read the in-depth release news:

• Eclipse Theia 1.67 announcement
• Eclipse Theia 1.68 announcement

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