Simyl Code for VS Code

AI Coding, Visualized

Coming Soon

Most AI coding tools are black boxes. Simyl Code is different — watch every file read, every edit, every decision in real-time. Then automate entire feature implementations while you focus on what matters.

Join the waitlist to get early access

The Problem with AI Coding Today

Current tools ask you to trade control for convenience. You shouldn't have to.

Black Box AI

Most tools hide what the AI is doing. You submit a prompt, wait, and hope.

Context Switching

Terminal-based tools pull you out of your editor, breaking flow state.

Manual Babysitting

Complex tasks need constant back-and-forth. Implement, test, fix, repeat — each step manual.

Cost Anxiety

API-based pricing with no visibility into token usage until the bill arrives.

See Everything. Control Everything. Automate Everything.

Simyl Code gives you full visibility into what the AI is doing, fine-grained control over every action, and the ability to automate multi-step workflows end to end.

Complete Transparency

Watch every file read, every edit, every command in real-time. Expandable cards show exactly what the AI is doing and why.

Native VS Code Experience

Drag, dock, and position the AI panel anywhere in your workspace. Automatic theme integration. Feels like part of your editor, not a bolt-on.

Structured Automation

Multi-phase workflows implement entire features automatically. Start a task, approve the plan, come back to finished, validated code.

Built for How You Really Work

Every feature designed around real developer workflows, not marketing demos.

Complete Transparency

Watch every file read, edit, and command as it happens. Expandable cards show inputs, outputs, and duration for every action.

Workflow Automation

Multi-phase implementation from research to plan to code to validation. Start a workflow, approve the plan, come back to finished code.

Permission Control

Every sensitive operation requires explicit approval. Countdown timers, danger warnings, and full previews keep you in control.

Live Cost & Context Tracking

Real-time token usage, running cost in USD, and context window monitoring. No surprise bills.

Automatic Validation

Built-in typecheck, lint, and test execution after implementation. Up to 3 automatic fix cycles if validation fails.

Crash Recovery

Checkpoint-based recovery means you never lose progress, even if something goes wrong mid-workflow.

Real-Time Streaming

Watch the AI think and respond character by character. See immediately if it's on the right track and interrupt if needed.

Completion Reports

Get a shareable summary after every workflow: features implemented, files changed, duration, and total cost. One-click copy for PRs and standups.

Why Simyl Code?

vs. CLI tools

All the power of Claude Code, with a beautiful visual interface and workflow automation.

vs. Copilot

Copilot suggests lines of code. Simyl Code implements entire features.

vs. Cursor

AI coding superpowers without switching editors.

Everything You Need

Real-time streaming responses
Visual tool call cards with inline diffs
Live token, cost, and context tracking
Permission dialogs with countdown timers
Multi-phase workflow automation
Automatic typecheck, lint, and test validation
Deficiency auto-fixing (up to 3 cycles)
Checkpoint-based crash recovery
Activity dashboard with phase timeline
Completion reports with one-click copy
VS Code theme integration (light/dark/high contrast)
Keyboard shortcuts and drag-to-dock panel

Technical Details

PlatformVS Code 1.85+
AI ModelClaude Opus 4.6 via Claude Agent SDK
ToolsRead, Write, Edit, Bash, Glob, Grep, WebFetch, WebSearch
WorkflowsResearch (plan → implement → validate) and Plans (implement → validate)
ValidationAutomatic typecheck, lint, and test execution with up to 3 fix cycles
PricingUses your Anthropic API key (usage-based) or Claude subscription

Be the First to Try Simyl Code

Join the waitlist to get early access when we launch.