Add JetBrains Copilot plugin support

Author: danbarr

cmd/thv/app/client.go

@@ -44,6 +44,7 @@ Valid clients:
   - amp-windsurf: Sourcegraph Amp extension for Windsurf
   - claude-code: Claude Code CLI
   - cline: Cline extension for VS Code
+  - copilot-jetbrains: GitHub Copilot plugin for JetBrains IDEs
   - cursor: Cursor editor
   - roo-code: Roo Code extension for VS Code
   - vscode: Visual Studio Code
@@ -67,6 +68,7 @@ Valid clients:
   - amp-windsurf: Sourcegraph Amp extension for Windsurf
   - claude-code: Claude Code CLI
   - cline: Cline extension for VS Code
+  - copilot-jetbrains: GitHub Copilot plugin for JetBrains IDEs
   - cursor: Cursor editor
   - roo-code: Roo Code extension for VS Code
   - vscode: Visual Studio Code
@@ -166,12 +168,13 @@ func clientRegisterCmdFunc(cmd *cobra.Command, args []string) error {
 	// Validate the client type
 	switch clientType {
 	case "roo-code", "cline", "cursor", "claude-code", "vscode-insider", "vscode", "windsurf", "windsurf-jetbrains",
-		"amp-cli", "amp-vscode", "amp-vscode-insider", "amp-cursor", "amp-windsurf":
+		"amp-cli", "amp-vscode", "amp-vscode-insider", "amp-cursor", "amp-windsurf", "copilot-jetbrains":
 		// Valid client type
 	default:
 		return fmt.Errorf(
 			"invalid client type: %s (valid types: roo-code, cline, cursor, claude-code, vscode, vscode-insider, "+
-				"windsurf, windsurf-jetbrains, amp-cli, amp-vscode, amp-vscode-insider, amp-cursor, amp-windsurf)",
+				"windsurf, windsurf-jetbrains, amp-cli, amp-vscode, amp-vscode-insider, amp-cursor, amp-windsurf, "+
+				"copilot-jetbrains)",
 			clientType)
 	}
 
@@ -198,12 +201,13 @@ func clientRemoveCmdFunc(cmd *cobra.Command, args []string) error {
 	// Validate the client type
 	switch clientType {
 	case "roo-code", "cline", "cursor", "claude-code", "vscode-insider", "vscode", "windsurf", "windsurf-jetbrains",
-		"amp-cli", "amp-vscode", "amp-vscode-insider", "amp-cursor", "amp-windsurf":
+		"amp-cli", "amp-vscode", "amp-vscode-insider", "amp-cursor", "amp-windsurf", "copilot-jetbrains":
 		// Valid client type
 	default:
 		return fmt.Errorf(
 			"invalid client type: %s (valid types: roo-code, cline, cursor, claude-code, vscode, vscode-insider, "+
-				"windsurf, windsurf-jetbrains, amp-cli, amp-vscode, amp-vscode-insider, amp-cursor, amp-windsurf)",
+				"windsurf, windsurf-jetbrains, amp-cli, amp-vscode, amp-vscode-insider, amp-cursor, amp-windsurf, "+
+				"copilot-jetbrains)",
 			clientType)
 	}
 

pkg/client/config.go

@@ -52,6 +52,8 @@ const (
 	AmpVSCodeInsider MCPClient = "amp-vscode-insider"
 	// AmpWindsurf represents the Sourcegraph Amp extension for Windsurf.
 	AmpWindsurf MCPClient = "amp-windsurf"
+	// CopilotJetBrains represents the Copilot plugin for JetBrains IDEs.
+	CopilotJetBrains MCPClient = "copilot-jetbrains"
 )
 
 // Extension is extension of the client config file.
@@ -326,6 +328,26 @@ var supportedClientIntegrations = []mcpClientConfig{
 		},
 		IsTransportTypeFieldSupported: true,
 	},
+	{
+		ClientType:   CopilotJetBrains,
+		Description:  "JetBrains Copilot plugin",
+		SettingsFile: "mcp.json",
+		RelPath: []string{
+			"github-copilot", "intellij",
+		},
+		MCPServersPathPrefix: "/servers",
+		PlatformPrefix: map[string][]string{
+			"linux":   {".config"},
+			"darwin":  {".config"},
+			"windows": {"AppData", "Local"},
+		},
+		SupportedTransportTypesMap: map[types.TransportType]string{
+			types.TransportTypeStdio:          "sse",
+			types.TransportTypeSSE:            "sse",
+			types.TransportTypeStreamableHTTP: "http",
+		},
+		Extension: JSON,
+	},
 }
 
 // ConfigFile represents a client configuration file

pkg/client/config_test.go

@@ -75,6 +75,13 @@ func createMockClientConfigs() []mcpClientConfig {
 			RelPath:              []string{"mock_amp_cursor"},
 			SettingsFile:         "settings.json",
 			MCPServersPathPrefix: "/amp.mcpServers",
+		},
+		{
+			ClientType:           CopilotJetBrains,
+			Description:          "JetBrains Copilot plugin (Mock)",
+			RelPath:              []string{"mock_jetbrains_copilot"},
+			SettingsFile:         "mcp.json",
+			MCPServersPathPrefix: "/servers",
 			Extension:            JSON,
 		},
 	}
@@ -362,6 +369,9 @@ func TestSuccessfulClientConfigOperations(t *testing.T) {
 			case AmpWindsurf:
 				assert.Contains(t, string(content), `"mcpServers":`,
 					"AmpWindsurf config should contain mcpServers key")
+			case CopilotJetBrains:
+				assert.Contains(t, string(content), `"servers":`,
+					"JetBrains Copilot config should contain servers key")
 			}
 		}
 	})
@@ -388,7 +398,7 @@ func TestSuccessfulClientConfigOperations(t *testing.T) {
 				assert.Contains(t, string(content), testURL,
 					"VSCode config should contain the server URL")
 			case Cursor, RooCode, ClaudeCode, Cline, Windsurf, WindsurfJetBrains, AmpCli,
-				AmpVSCode, AmpCursor, AmpVSCodeInsider, AmpWindsurf:
+				AmpVSCode, AmpCursor, AmpVSCodeInsider, AmpWindsurf, CopilotJetBrains:
 				assert.Contains(t, string(content), testURL,
 					"Config should contain the server URL")
 			}

pkg/config/config_test.go

@@ -108,6 +108,7 @@ func TestSave(t *testing.T) {
 			Clients: Clients{
 				RegisteredClients: []string{
 					"vscode", "cursor", "roo-code", "cline", "claude-code", "amp-cli", "amp-vscode", "amp-cursor",
+					"copilot-jetbrains",
 				},
 			},
 		}