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What is ToolSDK.ai?

ToolSDK.ai is a free TypeScript SDK and marketplace aimed at accelerating the creation of agentic AI applications by providing instant access to over 5,300 MCP (Model Context Protocol) servers and a variety of modular tools with just a single line of code. This functionality enables developers to effortlessly incorporate real-world workflows that integrate language models with diverse external systems. The platform offers a unified client for loading structured MCP servers, which encompass features such as search, email, CRM, task management, storage, and analytics, effectively turning them into tools that work in harmony with OpenAI technologies. It adeptly handles authentication, invocation, and the orchestration of results, allowing virtual assistants to engage with, analyze, and leverage live data from a multitude of services, including Gmail, Salesforce, Google Drive, ClickUp, Notion, Slack, GitHub, and various analytics platforms, in addition to custom web search or automation endpoints. Furthermore, the SDK includes quick-start integration examples, supports metadata and conditional logic for multi-step orchestrations, and ensures smooth scaling to facilitate parallel agents and complex pipelines, making it a crucial asset for developers seeking to push the boundaries of innovation in the AI domain. With these advanced features, ToolSDK.ai not only simplifies the process of developing sophisticated AI-driven solutions but also encourages a broader range of applications across different industries.

What is 21st?

21st is a developer-focused platform designed to simplify the creation and deployment of AI agents within modern software applications. The platform provides an SDK that allows developers to define agents using simple code while integrating tools, prompts, and AI models. It supports multiple development environments and frameworks including Next.js, React, TypeScript, Python, Node.js, and other common programming stacks. Developers can configure agents to run on advanced runtimes such as Claude Code or Codex, enabling tool usage, file access, and intelligent task execution. Once the agent configuration is defined, deployment can be completed using a single command that automatically sets up infrastructure. The platform manages backend systems such as sandboxed execution environments, authentication, rate limits, and streaming responses. It also includes a drop-in chat interface component that developers can embed directly into their applications to enable user interaction with agents. Real-time token streaming allows users to see responses generated progressively, creating a more interactive experience. The platform provides built-in observability tools that allow developers to monitor conversations, replay sessions, and trace agent actions. These features make debugging and optimization much easier during development and production. 21st also includes usage controls such as per-user spending limits, quotas, and metering to help manage AI costs. By combining powerful developer tools with managed infrastructure and deployment capabilities, 21st makes it easier for teams to build and scale AI-powered agents within their products.

Media

Media

Integrations Supported

React
Claude
ClickUp
Cline
Cursor
Exa
Facebook
GitHub
Gmail
Google Drive
Hyperbrowser
LinkedIn
MySQL
Next.js
Notion
Slack
Tailwind CSS
Windsurf Browser
X (Twitter)
shadcn/ui

Integrations Supported

React
Claude
ClickUp
Cline
Cursor
Exa
Facebook
GitHub
Gmail
Google Drive
Hyperbrowser
LinkedIn
MySQL
Next.js
Notion
Slack
Tailwind CSS
Windsurf Browser
X (Twitter)
shadcn/ui

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

ToolSDK.ai

Date Founded

2025

Company Location

United States

Company Website

toolsdk.ai/

Company Facts

Organization Name

21st.dev

Company Website

21st.dev/

Categories and Features

Categories and Features

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