Sixth SAST
Sixth SAST (Static Application Security Testing) is an extension for Visual Studio Code that enhances code and application security using G...
Last verified:
What is Sixth SAST?
Sixth AI is an autonomous coding agent for Visual Studio Code that plans, writes, edits, and debugs code across an entire project instead of only suggesting single lines. It is designed to take a high-level request, break it into steps, and then make multi-file changes while showing you a diff for review before anything is applied.
A major focus of the tool is project-wide editing. It can create, modify, and delete files directly in your workspace, detect errors such as missing imports or syntax issues while it works, and keep a change timeline so you can roll back if needed. That makes it useful for feature work, bug fixes, refactors, and larger migrations that span many files.
The product also emphasizes planning and orchestration. Its Deep Planning Mode produces a step-by-step strategy before coding starts, and sub-agents can work on different parts of a task in parallel. The website positions this as a more capable alternative to basic copilots that only handle one-line suggestions.
Sixth AI also includes remote control through Telegram, so you can start or manage work from your phone, get progress updates, and approve changes without being at your desk. It supports a wide range of languages and frameworks, works with multiple model providers, and can be extended with MCP servers and natural-language terminal commands, making it aimed at developers who want a more autonomous, full-workflow coding assistant.
Sixth SAST pricing
Pricing model: Free
The website page shown does not provide a clear public pricing breakdown, free tier details, or named paid plans. It does state that you can use any model, including Claude, GPT, Gemini, DeepSeek, or your own API key, which suggests usage may depend on the model provider you connect. The page also presents Sixth AI as an installable VS Code extension from the marketplace and references community/support channels, but it does not list included features by subscription tier on the page content provided.
Sixth SAST pros
- Autonomous project-wide coding agent
- Plans before writing code
- Edits multiple files in one task
- Creates, modifies, and deletes files directly
- Shows clean diffs before approval
- Automatic error detection while working
- Tracks changes for rollback
- Deep Planning Mode for complex tasks
- Step-by-step roadmap before execution
- Sub-agents for parallel work
- Parallel execution across different concerns
- Remote control through Telegram
- Real-time task updates on mobile
- Natural-language terminal command generation
- Works with Claude, GPT, Gemini, DeepSeek, or your own key
- Supports 1000+ MCP servers
- Broad language and framework support
- Built for feature builds, refactors, and migrations
- Integrates inside VS Code sidebar
- Lets you review and approve changes before applying them
Sixth SAST cons
- Requires user review and approval workflow
- Optimized for VS Code, not standalone use
- Remote control depends on Telegram setup
- Some features may be overkill for small edits
- Autonomy may feel complex for beginners
- Best suited to larger multi-file tasks
- Performance depends on the chosen model
- MCP and advanced workflows add setup complexity
- Website does not clearly publish simple pricing tiers
- Not intended as a lightweight single-line autocomplete tool
- Parallel sub-agents can add coordination overhead
- Feature set may be more than casual developers need
- Requires trust in generated file changes
- Documentation on limits is not fully detailed on the page
- No clear offline mode described
- Pricing is not clearly disclosed on the page
Frequently asked questions about Sixth SAST
What does Sixth AI do inside VS Code?
Sixth AI acts as an autonomous coding agent inside Visual Studio Code. You give it a task, and it can plan the work, write and edit code across your project, debug issues, and present changes for review before they are applied.
How is it different from a basic copilot?
The site says basic copilots usually provide single-line suggestions, while Sixth AI works at the project level. It can think through a task, create a plan first, edit multiple files, and coordinate sub-agents for parallel work.
Can Sixth AI edit files directly?
Yes. The website says it writes and edits files directly in your workspace, including creating, modifying, and deleting files as needed. It also shows a clean diff so you can approve the changes before they are committed.
What is Deep Planning Mode?
Deep Planning Mode is the feature Sixth AI uses to break a complex request into a structured step-by-step strategy before coding starts. The website describes it as useful for big tasks like feature builds, refactors, and migrations because it analyzes structure and dependencies first.
What are sub-agents used for?
Sub-agents let Sixth AI split a task into parallel parts. According to the website, the main agent orchestrates the work while sub-agents research, write, or validate different pieces at the same time.
Can I use Sixth AI from my phone?
Yes. The page says you can control the agent remotely through Telegram. That includes getting updates, approving file changes, and steering the task without being at your computer.
What languages and frameworks does it support?
The website lists many supported technologies, including JavaScript, TypeScript, Python, Java, C, C++, C#, Go, PHP, Ruby, Kotlin, Dart, Rust, Swift, SQL, Bash, React, Vue, Svelte, HTML5, CSS, Tailwind, Terraform, YAML, Docker, PowerShell, and more.
Does Sixth AI work with different AI models?
Yes. The site says it works with Claude, GPT, Gemini, DeepSeek, or even your own API key. That means the agent can be paired with different model providers rather than being locked to a single one.
What extra integrations does it have?
The page highlights more than 1000 MCP servers for extending the agent with tools such as Jira, AWS, and databases. It also supports generating terminal commands from natural language, which helps it interact with your development environment.
Is pricing clearly shown on the page?
No clear pricing table or tier breakdown is shown in the page content provided. The website page describes the product and its capabilities, but it does not publish a detailed free-versus-paid plan structure there.