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496b84ac59 feat(adapter): add JetBrains Copilot adapter (#321 )

Full HookAdapter implementation for JetBrains IDEs (IntelliJ IDEA,
PyCharm, WebStorm, GoLand, etc.) with GitHub Copilot plugin.

Shares the same Copilot agent runtime as VS Code Copilot — same hook
events (PreToolUse, PostToolUse, PreCompact, SessionStart), same
hookSpecificOutput wrapper format, same .github/hooks/ config location.

Key differences from VS Code Copilot:
- Session storage: ~/.config/JetBrains/context-mode/sessions/
- MCP config: via Settings UI (not .vscode/mcp.json)
- Detection: IDEA_INITIAL_DIRECTORY, IDEA_HOME, JETBRAINS_CLIENT_ID
- Client map: JetBrains Client, IntelliJ IDEA, PyCharm

All 4 blockers from PR #327 review fixed:
1. CLI HOOK_MAP registered (setup/upgrade/doctor work)
2. Hook scripts use parseStdin (not JSON.parse)
3. JETBRAINS_OPTS has configDirEnv field
4. No bundle files committed

26 files changed: 3 adapter source, 4 hook scripts, 6 test files,
4 docs, 2 configs, CLI + formatters + tool-naming + session-helpers.
1794 tests pass, typecheck clean.

Closes #321

Co-Authored-By: Murat Aslan <murataslan1@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-25 21:37:50 +03:00

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JetBrains Copilot Setup

Setup guide for using context-mode with JetBrains IDEs (IntelliJ IDEA, WebStorm, PyCharm, etc.) via the GitHub Copilot plugin.

Prerequisites

Node.js 18+ (node --version)
JetBrains IDE — any JetBrains IDE (IntelliJ IDEA, WebStorm, PyCharm, GoLand, Rider, CLion, etc.)
GitHub Copilot plugin v1.5.57+ — install from Settings > Plugins > Marketplace, search "GitHub Copilot"

MCP Setup

JetBrains configures MCP servers via the Settings UI, not a file.

Open your JetBrains IDE.
Go to Settings > Tools > AI Assistant > Model Context Protocol (MCP).
Click Add Server and configure:
- Name: context-mode
- Command: npx
- Args: -y context-mode
Click OK to save.

Alternatively, you can use a global install (npm install -g context-mode) and set the command to context-mode with no args.

Example MCP config (for reference): configs/jetbrains-copilot/mcp.json

Hook Installation

Install hooks using the automated setup command:

npx context-mode@latest setup --adapter jetbrains-copilot

This creates .github/hooks/context-mode.json in your project with the following hook configuration:

{
  "hooks": {
    "PreToolUse": [
      { "type": "command", "command": "context-mode hook jetbrains-copilot pretooluse" }
    ],
    "PostToolUse": [
      { "type": "command", "command": "context-mode hook jetbrains-copilot posttooluse" }
    ],
    "PreCompact": [
      { "type": "command", "command": "context-mode hook jetbrains-copilot precompact" }
    ],
    "SessionStart": [
      { "type": "command", "command": "context-mode hook jetbrains-copilot sessionstart" }
    ]
  }
}

Full hook config reference: configs/jetbrains-copilot/hooks.json

Upgrade

Update context-mode to the latest version:

context-mode upgrade

Or from within a Copilot chat session, type ctx upgrade.

Verification

Run the diagnostics to verify everything is working:

context-mode doctor

Or from within a Copilot chat session, type ctx doctor.

All checks should show [x]. The doctor validates runtimes, hooks, FTS5, and MCP registration.

You can also verify context savings by typing ctx stats in a Copilot chat session.

Troubleshooting

MCP server not connecting

Ensure Node.js 18+ is in your PATH.
Restart the JetBrains IDE after adding the MCP server.
Check Settings > Tools > AI Assistant > MCP and confirm "context-mode" shows a green status indicator.

Hooks not firing

Verify .github/hooks/context-mode.json exists in your project root.
JetBrains Copilot reads hooks from .github/hooks/ — the same location as VS Code Copilot.
Re-run npx context-mode@latest setup --adapter jetbrains-copilot to regenerate the hook config.

"context-mode: command not found"

Install globally: npm install -g context-mode
Verify: which context-mode should return a path.
If using npx, ensure npx is in your IDE's PATH.

Tools appear but routing is not enforced

Hooks enforce routing programmatically. Without hooks, the model can still use context-mode tools but won't be redirected to prefer them.
Ensure the hook config file is in .github/hooks/context-mode.json (not .github/hooks.json).

Session continuity not working

Verify all four hooks (PreToolUse, PostToolUse, PreCompact, SessionStart) are configured.
Run ctx doctor to check hook registration status.

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