Add Test Connection Tool

[EmanueleDeRossi1]

This PR introduces changes from the feature/add-test-connection-tool branch.

📝 Summary

This PR introduces a “Test Connection” feature for MCP tools — users can now verify their MCP credentials before saving a tool.

Backend: new POST /mcp/test-connection endpoint. The MCP agent attempts to authenticate using the provided credentials and checks for a 401 Unauthorized response. Success or failure is returned accordingly.

Frontend: added a “Test Connection” button in the MCP connection dialog. Inline alerts show success or error. Testing the MCP configuration is now required: users can not save the MCP tool without having successfully tested the connection.

Smaller changes: Removed the robot icon from the button and removed duplicate toast notifications for cleaner UX.

📁 Files Changed ( 8 files)

apps/backend/src/rhesis/backend/app/routers/services.py
apps/backend/src/rhesis/backend/app/schemas/services.py
apps/backend/src/rhesis/backend/app/services/mcp_service.py
apps/backend/src/rhesis/backend/app/templates/mcp_test_auth_prompt.jinja2
apps/frontend/src/app/(protected)/knowledge/components/MCPImportDialog.tsx
apps/frontend/src/app/(protected)/mcp/components/MCPConnectionDialog.tsx
apps/frontend/src/utils/api-client/interfaces/test-configuration.ts
apps/frontend/src/utils/api-client/services-client.ts

📋 Commit Details

c0d6f0c7 - feat(mcp): require connection test before saving tools (Emanuele De Rossi, 2025-12-03 15:56)
7b4a2ebf - feat(frontend): make TestConfigurationUpdate a partial of TestConfigurationBase (Emanuele De Rossi, 2025-12-03 11:04)
53889f60 - feat(mcp): test connections without creating tools (Emanuele De Rossi, 2025-12-03 10:54)
551acc16 - feat(frontend): remove duplicate success notifications in MCP Import Dialog and MCP Connect Dialog (Emanuele De Rossi, 2025-12-02 16:28)
c9279f77 - feat(frontend): remove robot icon from Test Connection button (Emanuele De Rossi, 2025-12-02 16:11)
e854b53c - feat(frontend): add test connection button to MCP connection dialog (Emanuele De Rossi, 2025-12-01 11:03)
6d1d37dc - feat(mcp): simplify test connection response to use JSON from LLM (Emanuele De Rossi, 2025-12-01 10:01)
e5497763 - feat(mcp): add test connection endpoint (Emanuele De Rossi, 2025-12-01 09:10)

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
1440	1	1439	86

View the full list of 1 ❄️ flaky test(s)

backend/services/connector/test_handler.py::TestSDKMessageHandler::test_sync_function_endpoints_error

Flake rate in main: 100.00% (Passed 0 times, Failed 10 times)

Stack Traces | 0.062s run time

.../services/connector/test_handler.py:137: in test_sync_function_endpoints_error
    assert result["status"] == "success"  # Registration still succeeds
E   AssertionError: assert 'error' == 'success'
E     
E     - success
E     + error

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[harry-rhesis]

@EmanueleDeRossi1 thanks for implementing this feature, it makes it more convenient and easy for user!