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Description
21st is a development platform designed to help engineers quickly build and deploy AI agents inside their applications. The platform provides a specialized SDK that simplifies the process of defining agent behavior, integrating tools, and connecting AI models. Developers can create agents using familiar technologies such as Next.js, React, TypeScript, Python, and Node.js, making integration straightforward for modern applications. Once an agent is defined, the platform allows it to be deployed with a single command while automatically handling infrastructure requirements. 21st provides sandboxed execution environments through E2B sessions, ensuring that agent operations run securely and independently. The platform includes a ready-to-use chat interface component that can be embedded directly into an app for user interaction. Additional features include token streaming, conversation history, tool execution, and built-in observability for debugging and monitoring. Developers can replay sessions and trace tool calls to better understand how agents behave during execution. The system also supports spend limits, authentication controls, and rate limiting to manage AI usage across users. By combining development tools with managed infrastructure, 21st helps teams launch scalable AI agents without building complex backend systems.
Description
The QVAC SDK serves as a toolkit designed for developers looking to integrate on-device AI inference into their applications crafted with JavaScript/TypeScript or Python. It supplies a unified API to facilitate the execution of various supported language, vision, and speech models across both mobile and desktop platforms, encompassing features like model discovery and downloads, inference APIs, and optional connections to remote providers. With this toolkit, developers can create AI features that function offline, ensuring that prompts and processing occur directly on the device for local inference. Additionally, QVAC provides an OpenAI-compatible server alongside plugins that seamlessly link local models with developer tools. Aimed primarily at those developing AI-enhanced applications, the SDK's documentation outlines processes for setup, choosing models, handling tasks related to text generation, image, and audio, as well as invoking tools; the available functionalities can vary based on the chosen model and platform. Furthermore, the QVAC SDK is accessible as free, open-source software under the Apache 2.0 license, and using local inference does not necessitate a hosted QVAC account, making it even more appealing for developers. This flexibility and ease of use make the QVAC SDK a robust choice for integrating AI capabilities into modern applications.
API Access
Has API
No
API Access
Has API
Yes
Screenshots View All
No images available
Integrations
Grok Bot
Yes
Hugging Face
No
OpenClaw
No
OpenCode
No
React
Yes
Tailwind CSS
Yes
shadcn/ui
Yes
Integrations
Grok Bot
No
Hugging Face
Yes
OpenClaw
Yes
OpenCode
Yes
React
No
Tailwind CSS
No
shadcn/ui
No
Pricing Details
Free
Free Trial
No
Free Version
Yes
Pricing Details
$0
Free and open source under Apache 2.0. Local inference has no subscription, API-key, or per-token charge.
Free Trial
No
Free Version
Yes
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
No
Chromebook
No
Deployment
Web-Based
No
On-Premises
Yes
iPhone App
Yes
iPad App
Yes
Android App
Yes
Windows
Yes
Mac
Yes
Linux
Yes
Chromebook
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Vendor Details
Company Name
21st.dev
Website
21st.dev/
Vendor Details
Company Name
Tether Data
Country
El Salvador
Website
qvac.tether.io/products/sdk