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Average Ratings 0 Ratings

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ease
features
design
support

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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 Session Orchestrator is an open-source workflow plugin under the MIT license, designed for use with Claude Code, Codex CLI, Cursor, and Pi. It efficiently analyzes repository context and issues, assists in planning tasks, organizes implementation in controlled phases, and documents verification outcomes alongside outstanding tasks for future sessions. The workflows encompass all stages, including session initiation, planning, execution, review, and finalization. This plugin operates locally with Node.js version 24 or higher. The enforcement of rules varies depending on the host, where Codex file-scope and destructive-command guidelines serve as suggestions instead of enforced hooks. Additionally, both the source code and user documentation can be found on GitHub for users seeking more information. Overall, it provides a comprehensive solution for managing workflows in software development projects.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

Screenshots View All

No images available

Integrations

Claude Code No 
Codex CLI No 
Cursor No 
OpenAI Codex No 
Pi Agent No 
React Yes 
Tailwind CSS Yes 
shadcn/ui Yes 

Integrations

Claude Code Yes 
Codex CLI Yes 
Cursor Yes 
OpenAI Codex Yes 
Pi Agent Yes 
React No 
Tailwind CSS No 
shadcn/ui No 

Pricing Details

Free
Free Trial No 
Free Version Yes 

Pricing Details

Free and open source
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 No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
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

Bernhard Götzendorfer

Country

Austria

Website

session-orchestrator.com

Product Features

Product Features

Alternatives

Alternatives