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🔒 feat: Add MCP server domain restrictions for remote transports (#11013)

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* 🔒 feat: Add MCP server domain restrictions for remote transports

* 🔒 feat: Implement comprehensive MCP error handling and domain validation

- Added `handleMCPError` function to centralize error responses for domain restrictions and inspection failures.
- Introduced custom error classes: `MCPDomainNotAllowedError` and `MCPInspectionFailedError` for better error management.
- Updated MCP server controllers to utilize the new error handling mechanism.
- Enhanced domain validation logic in `createMCPTools` and `createMCPTool` functions to prevent operations on disallowed domains.
- Added tests for runtime domain validation scenarios to ensure correct behavior.

* chore: import order

* 🔒 feat: Enhance domain validation in MCP tools with user role-based restrictions

- Integrated `getAppConfig` to fetch allowed domains based on user roles in `createMCPTools` and `createMCPTool` functions.
- Removed the deprecated `getAllowedDomains` method from `MCPServersRegistry`.
- Updated tests to verify domain restrictions are applied correctly based on user roles.
- Ensured that domain validation logic is consistent and efficient across tool creation processes.

* 🔒 test: Refactor MCP tests to utilize configurable app settings

- Introduced a mock for `getAppConfig` to enhance test flexibility.
- Removed redundant mock definition to streamline test setup.
- Ensured tests are aligned with the latest domain validation logic.

---------

Co-authored-by: Atef Bellaaj <slalom.bellaaj@external.daimlertruck.com>
Co-authored-by: Danny Avila <danny@librechat.ai>
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Atef Bellaaj 2025-12-18 19:57:49 +01:00 • committed by GitHub
parent 98294755ee
commit 95a69df70e
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50
api/server/routes/__tests__/mcp.spec.js
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@ -12,26 +12,36 @@ const mockRegistryInstance = {
removeServer: jest.fn(),
};
jest.mock('@librechat/api', () => ({
...jest.requireActual('@librechat/api'),
MCPOAuthHandler: {
initiateOAuthFlow: jest.fn(),
getFlowState: jest.fn(),
completeOAuthFlow: jest.fn(),
generateFlowId: jest.fn(),
},
MCPTokenStorage: {
storeTokens: jest.fn(),
getClientInfoAndMetadata: jest.fn(),
getTokens: jest.fn(),
deleteUserTokens: jest.fn(),
},
getUserMCPAuthMap: jest.fn(),
generateCheckAccess: jest.fn(() => (req, res, next) => next()),
MCPServersRegistry: {
getInstance: () => mockRegistryInstance,
},
}));
jest.mock('@librechat/api', () => {
const actual = jest.requireActual('@librechat/api');
return {
...actual,
MCPOAuthHandler: {
initiateOAuthFlow: jest.fn(),
getFlowState: jest.fn(),
completeOAuthFlow: jest.fn(),
generateFlowId: jest.fn(),
},
MCPTokenStorage: {
storeTokens: jest.fn(),
getClientInfoAndMetadata: jest.fn(),
getTokens: jest.fn(),
deleteUserTokens: jest.fn(),
},
getUserMCPAuthMap: jest.fn(),
generateCheckAccess: jest.fn(() => (req, res, next) => next()),
MCPServersRegistry: {
getInstance: () => mockRegistryInstance,
},
// Error handling utilities (from @librechat/api mcp/errors)
isMCPDomainNotAllowedError: (error) => error?.code === 'MCP_DOMAIN_NOT_ALLOWED',
isMCPInspectionFailedError: (error) => error?.code === 'MCP_INSPECTION_FAILED',
MCPErrorCodes: {
DOMAIN_NOT_ALLOWED: 'MCP_DOMAIN_NOT_ALLOWED',
INSPECTION_FAILED: 'MCP_INSPECTION_FAILED',
},
};
});
jest.mock('@librechat/data-schemas', () => ({
logger: {