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Create specification for CLI app with MFA support

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- Define user stories for authentication, sync triggering, and status checking
- Specify functional requirements for text-based API interactions
- Define success criteria for authentication and sync operations
- Create quality checklist for specification validation
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# Feature Specification: CLI App for API Interaction with MFA
**Feature Branch**: `006-cli-auth-sync-mfa`
**Created**: Thursday, December 18, 2025
**Status**: Draft
**Input**: User description: "create a simple python CLI app for interacting with our API to authenticate the user, trigger a sync, and see the sync status. Allow for the use of MFA on the acct."
## User Scenarios & Testing *(mandatory)*
<!--
IMPORTANT: User stories should be PRIORITIZED as user journeys ordered by importance.
Each user story/journey must be INDEPENDENTLY TESTABLE - meaning if you implement just ONE of them,
you should still have a viable MVP (Minimum Viable Product) that delivers value.
Assign priorities (P1, P2, P3, etc.) to each story, where P1 is the most critical.
Think of each story as a standalone slice of functionality that can be:
- Developed independently
- Tested independently
- Deployed independently
- Demonstrated to users independently
-->
### User Story 1 - Text-Based Authentication with MFA (Priority: P1)
As a user, I want to authenticate with the API via a text-based interface, including support for MFA on my account, so that I can securely access the system and perform sync operations.
**Why this priority**: Authentication is the foundational requirement for any subsequent operations. Without secure authentication, all other features are inaccessible. MFA support is critical for account security.
**Independent Test**: Can be fully tested by running the authentication command with both standard credentials and MFA-enabled accounts, and verifying the system properly validates credentials and handles MFA flows.
**Acceptance Scenarios**:
1. **Given** a valid username and password without MFA, **When** I run the auth command, **Then** I am successfully authenticated and receive a valid session/token
2. **Given** a valid username, password, and MFA code, **When** I run the auth command, **Then** I am successfully authenticated after providing the MFA code
3. **Given** an invalid username/password, **When** I run the auth command, **Then** authentication fails with an appropriate error message
---
### User Story 2 - Trigger Sync Operations via Text Interface (Priority: P2)
As a user, I want to trigger a sync operation from a text-based interface, so that I can initiate data synchronization between my account and the system without using the web interface.
**Why this priority**: This is the core functionality that provides value beyond simple authentication. It allows users to initiate the primary business function (syncing data) from a text-based interface.
**Independent Test**: Can be fully tested by authenticating and then running the sync trigger command, and verifying that the sync process is initiated in the backend system.
**Acceptance Scenarios**:
1. **Given** I am authenticated with a valid session, **When** I run the sync trigger command, **Then** a sync operation is initiated and I receive confirmation of the job
2. **Given** I am not authenticated, **When** I run the sync trigger command, **Then** I receive an authentication error
---
### User Story 3 - Check Sync Status via Text Interface (Priority: P3)
As a user, I want to check the status of my sync operations from a text-based interface, so that I can monitor the progress of my data synchronization without using the web interface.
**Why this priority**: This provides visibility into operations that may take time to complete, helping users understand system state and troubleshoot potential issues.
**Independent Test**: Can be fully tested by triggering a sync and then checking its status via the text interface, with various sync states being properly reported.
**Acceptance Scenarios**:
1. **Given** I am authenticated and have an active sync operation, **When** I run the status check command, **Then** I see the current status and progress of the sync
2. **Given** I am authenticated but have no active sync operations, **When** I run the status check command, **Then** I see appropriate status information
---
### Edge Cases
- What happens when MFA code expires while entering it?
- How does the system handle network interruptions during sync operations?
- What happens when the API is temporarily unavailable during authentication?
- How does the system handle concurrent sync requests from the same user?
- What occurs if a user attempts to check status for a sync job that no longer exists?
## Requirements *(mandatory)*
### Functional Requirements
- **FR-001**: System MUST provide a text-based interface for API interactions
- **FR-002**: System MUST authenticate users with support for Multi-Factor Authentication (MFA)
- **FR-003**: Users MUST be able to trigger a data sync operation from the text-based interface
- **FR-004**: Users MUST be able to check the status of ongoing sync operations from the text-based interface
- **FR-005**: System MUST securely store authentication credentials and tokens locally
- **FR-006**: System MUST support both interactive and non-interactive (scriptable) authentication modes
- **FR-007**: System MUST provide clear feedback and error messages to users during all operations
- **FR-008**: System MUST handle authentication token expiration and refresh automatically
### Key Entities
- **User Session**: Represents an authenticated user session with associated tokens and permissions
- **Sync Job**: Represents an initiated sync operation with status, progress, and metadata
- **Authentication Token**: Secure credential used to access the API on behalf of the user
## Success Criteria *(mandatory)*
### Measurable Outcomes
- **SC-001**: Users can authenticate via text-based interface with and without MFA in under 30 seconds
- **SC-002**: 95% of sync operations initiated via text-based interface complete successfully within expected timeframes
- **SC-003**: Users can check sync status and receive accurate information within 5 seconds of the command
- **SC-004**: 90% of users successfully complete authentication on first attempt when using the text-based interface
- **SC-005**: Text-based interface supports all authentication methods available in the main application including MFA
- **SC-006**: Users can trigger sync operations from text-based interface as reliably as from the web interface
## Assumptions
- The existing API already supports the necessary endpoints for authentication, sync triggering, and status checking
- The API authentication mechanism (including MFA) is consistent between the web interface and API endpoints
- Users have access to a terminal/command-line environment on their systems
- The text-based interface will run in common operating system command-line environments (Windows, macOS, Linux)