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Average Ratings 0 Ratings

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ease
features
design
support

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Write a Review

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

Eve serves as an open-source framework for developing AI agents that you fully control, structured around a file system and equipped with a runtime suitable for production use. Defining an agent is as straightforward as creating an instructions.md file, while additional components like model configurations, skills, tools, sandboxes, channels, connections, subagents, schedules, and evaluations can be incorporated as the agent evolves. Tools can easily be established by placing TypeScript files into the designated tools directory, and skills are formulated as Markdown playbooks that activate only when needed. These agents have the capability to integrate with platforms such as GitHub, Stripe, and Linear via secure authenticated connections, and they can interact through various channels like Slack, Discord, Teams, web chats, APIs, cron jobs, command-line interfaces, and tailored applications—all originating from the same codebase. Moreover, specialized subagents are capable of managing delegated tasks, utilizing their own unique prompts, tools, and sandboxes, enhancing the overall functionality and adaptability of the agent. This versatility allows developers to customize their AI systems to fit a wide range of applications and use cases.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Amazon Web Services (AWS) No 
Discord No 
Docker No 
GPT-5.4 No 
GitHub No 
Linear No 
Markdown No 
Microsoft Teams No 
React Yes 
Slack No 
Snowflake No 
Stripe No 
Tailwind CSS Yes 
TypeScript No 
Vercel No 
shadcn/ui Yes 

Integrations

Amazon Web Services (AWS) Yes 
Discord Yes 
Docker Yes 
GPT-5.4 Yes 
GitHub Yes 
Linear Yes 
Markdown Yes 
Microsoft Teams Yes 
React No 
Slack Yes 
Snowflake Yes 
Stripe Yes 
Tailwind CSS No 
TypeScript Yes 
Vercel Yes 
shadcn/ui No 

Pricing Details

Free
Free Trial No 
Free Version Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

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 Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
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 Yes 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

21st.dev

Website

21st.dev/

Vendor Details

Company Name

Vercel

Founded

2015

Country

United States

Website

eve.dev/

Product Features

Product Features

Alternatives

Alternatives

eve Reviews

eve

Vercel