
fragments
Open-source Next.js template for building apps that are fully generated by AI. By E2B.
Stars: 4724

Fragments is an open-source tool that leverages Anthropic's Claude Artifacts, Vercel v0, and GPT Engineer. It is powered by E2B Sandbox SDK and Code Interpreter SDK, allowing secure execution of AI-generated code. The tool is based on Next.js 14, shadcn/ui, TailwindCSS, and Vercel AI SDK. Users can stream in the UI, install packages from npm and pip, and add custom stacks and LLM providers. Fragments enables users to build web apps with Python interpreter, Next.js, Vue.js, Streamlit, and Gradio, utilizing providers like OpenAI, Anthropic, Google AI, and more.
README:
This is an open-source version of apps like Anthropic's Claude Artifacts, Vercel v0, or GPT Engineer.
Powered by the E2B SDK.
- Based on Next.js 14 (App Router, Server Actions), shadcn/ui, TailwindCSS, Vercel AI SDK.
- Uses the E2B SDK by E2B to securely execute code generated by AI.
- Streaming in the UI.
- Can install and use any package from npm, pip.
- Supported stacks (add your own):
- 🔸 Python interpreter
- 🔸 Next.js
- 🔸 Vue.js
- 🔸 Streamlit
- 🔸 Gradio
- Supported LLM Providers (add your own):
- 🔸 OpenAI
- 🔸 Anthropic
- 🔸 Google AI
- 🔸 Mistral
- 🔸 Groq
- 🔸 Fireworks
- 🔸 Together AI
- 🔸 Ollama
Make sure to give us a star!
- git
- Recent version of Node.js and npm package manager
- E2B API Key
- LLM Provider API Key
In your terminal:
git clone https://github.com/e2b-dev/fragments.git
Enter the repository:
cd fragments
Run the following to install the required dependencies:
npm i
Create a .env.local
file and set the following:
# Get your API key here - https://e2b.dev/
E2B_API_KEY="your-e2b-api-key"
# OpenAI API Key
OPENAI_API_KEY=
# Other providers
ANTHROPIC_API_KEY=
GROQ_API_KEY=
FIREWORKS_API_KEY=
TOGETHER_API_KEY=
GOOGLE_AI_API_KEY=
GOOGLE_VERTEX_CREDENTIALS=
MISTRAL_API_KEY=
XAI_API_KEY=
### Optional env vars
# Domain of the site
NEXT_PUBLIC_SITE_URL=
# Rate limit
RATE_LIMIT_MAX_REQUESTS=
RATE_LIMIT_WINDOW=
# Vercel/Upstash KV (short URLs, rate limiting)
KV_REST_API_URL=
KV_REST_API_TOKEN=
# Supabase (auth)
SUPABASE_URL=
SUPABASE_ANON_KEY=
# PostHog (analytics)
NEXT_PUBLIC_POSTHOG_KEY=
NEXT_PUBLIC_POSTHOG_HOST=
### Disabling functionality (when uncommented)
# Disable API key and base URL input in the chat
# NEXT_PUBLIC_NO_API_KEY_INPUT=
# NEXT_PUBLIC_NO_BASE_URL_INPUT=
# Hide local models from the list of available models
# NEXT_PUBLIC_HIDE_LOCAL_MODELS=
npm run dev
npm run build
-
Make sure E2B CLI is installed and you're logged in.
-
Add a new folder under sandbox-templates/
-
Initialize a new template using E2B CLI:
e2b template init
This will create a new file called
e2b.Dockerfile
. -
Adjust the
e2b.Dockerfile
Here's an example streamlit template:
# You can use most Debian-based base images FROM python:3.19-slim RUN pip3 install --no-cache-dir streamlit pandas numpy matplotlib requests seaborn plotly # Copy the code to the container WORKDIR /home/user COPY . /home/user
-
Specify a custom start command in
e2b.toml
:start_cmd = "cd /home/user && streamlit run app.py"
-
Deploy the template with the E2B CLI
e2b template build --name <template-name>
After the build has finished, you should get the following message:
✅ Building sandbox template <template-id> <template-name> finished.
-
Open lib/templates.json in your code editor.
Add your new template to the list. Here's an example for Streamlit:
"streamlit-developer": { "name": "Streamlit developer", "lib": [ "streamlit", "pandas", "numpy", "matplotlib", "request", "seaborn", "plotly" ], "file": "app.py", "instructions": "A streamlit app that reloads automatically.", "port": 8501 // can be null },
Provide a template id (as key), name, list of dependencies, entrypoint and a port (optional). You can also add additional instructions that will be given to the LLM.
-
Optionally, add a new logo under public/thirdparty/templates
-
Open lib/models.json in your code editor.
-
Add a new entry to the models list:
{ "id": "mistral-large", "name": "Mistral Large", "provider": "Ollama", "providerId": "ollama" }
Where id is the model id, name is the model name (visible in the UI), provider is the provider name and providerId is the provider tag (see adding providers below).
-
Open lib/models.ts in your code editor.
-
Add a new entry to the
providerConfigs
list:Example for fireworks:
fireworks: () => createOpenAI({ apiKey: apiKey || process.env.FIREWORKS_API_KEY, baseURL: baseURL || 'https://api.fireworks.ai/inference/v1' })(modelNameString),
-
Optionally, adjust the default structured output mode in the
getDefaultMode
function:if (providerId === 'fireworks') { return 'json' }
-
Optionally, add a new logo under public/thirdparty/logos
As an open-source project, we welcome contributions from the community. If you are experiencing any bugs or want to add some improvements, please feel free to open an issue or pull request.
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