AI workbench for projects

One workbench.
Any AI model.
Every stage.

Synthrophy gives your project a VS Code-style workspace with an AI assistant built in. Pick the model you want, from Claude and GPT to one running on your own laptop, then add tools as small extensions the assistant can use.

Everyone signs in with LegitShield. Want a look first? Open the workbench without an account.

Bring your own modelCloud or on your machine

Lifecycle stagesFrom first idea to operations

An assistant that actsTools the model can call

Sandboxed add-onsOnly what you approve

How Synthrophy works

From a blank screen to a working workbench, in four steps.

Set it up once. After that, you work: ask, review, move to the next stage.

Open your workbench

Pick a pack for your kind of project. It lays out your lifecycle as stages, like site, planning, design and operations.

Choose your model

Use Claude, GPT, Gemini, Mistral and more with your own key, or point it at a model running on your own machine.

Add extensions

Drop in an extension file. You see what it asks for, approve it, and it appears as a panel, a command or a tool.

Ask the assistant

Say what you need. The assistant calls your tools, like finding an address and showing it on the map, and the result lands in your workspace.

Extensions

Drop in a tool. Approve what it can do.

Every extension declares what it needs up front: your AI model, local storage, or specific websites. You approve once. It then runs in its own sealed sandbox, apart from the workbench and your keys.

One file adds panels, commands and AI tools
Runs separately from the workbench and your model keys
Install and remove in seconds

Features

More than a chat window. A place to work.

Any model, one switch

Change provider from the top bar. Your keys are remembered per provider, so one is never sent to another.

Lifecycle stages

Move through a project stage by stage. Each stage brings its own panels, bottom tabs and tools.

An assistant that acts

The model can call your extensions' tools, not just talk. Ask for a site and it appears on the map.

Extensions, sandboxed

Build with a small SDK. Each extension runs in isolation and can only use what it declared.

Light, dark and low-light

Three themes, including a dim amber mode that's easy on the eyes late at night.

Built to grow with your teamComing

Shared workspaces, private and shared extensions, and a marketplace are on the way.

Who it's for

Three ways to use it. One workbench.

Project teams

Run a project in stages, with an assistant and tools shaped to your kind of work.

Extension builders

Write an extension against a small SDK, test it right in the workbench, and ship it as one file.

Events and hackathons

Spin up a pack for a challenge, switch the model live, and drop in new tools while people watch.

Privacy

Your keys and your work stay yours.

Synthrophy is built so it needs to know as little about you as possible.

Model keys stay in your browser

Cloud requests pass through our server route, which doesn't store them.

Local models stay local

Ollama and similar run on your machine. Your browser talks to them directly.

Extensions are sealed

Each runs in its own sandbox with only the access you approved.

LegitShield shares very little

We receive your name and profile picture. No email address, no phone number.

FAQ

Questions, answered.

What is Synthrophy?

A VS Code-style workbench with an AI assistant built in. A project is laid out as a pack of lifecycle stages, and abilities are added as small extensions: panels, commands and tools the assistant can use.

Which AI models can I use?

Claude from Anthropic, and any OpenAI-compatible service, including OpenAI, Gemini, DeepSeek, Qwen, Kimi and Mistral. You can also point it at a model running on your own machine with Ollama, vLLM or llama.cpp.

Do I need an account?

No. You can open the workbench and start straight away. Signing in with LegitShield is where your profile, and soon shared workspaces and publishing, will live.

What does LegitShield share with Synthrophy?

Your name, your profile picture and a stable account ID. No email address and no phone number. Signing out ends your session in Synthrophy only.

Where do my API keys go?

They stay in your browser. When you use a cloud model, the request passes through our server route, which doesn't store the key. Local models are called directly from your browser and never touch our servers.

Can I build my own extensions?

Yes. An extension is a small TypeScript package built against our SDK. Bundle it into a single file, drop it onto the workbench, and approve what it asks for.

Is it ready to use?

Synthrophy is in early access. The workbench, model switching and extensions work today. Shared workspaces for teams and an extension marketplace are on the way.

One workbench. Every stage.

Just looking? Open the workbench without an account.

One workbench.Any AI model.Every stage.