docs: add Superjoin AI client

Author: buzo1234

docs/clients.mdx

@@ -54,6 +54,7 @@ This page provides an overview of applications that support the Model Context Pr
 | [Sourcegraph Cody][Cody]                    | ✅          | ❌        | ❌      | ❓                     | ❌          | ❌    | Supports resources through OpenCTX                                          |
 | [SpinAI][SpinAI]                            | ❌          | ❌        | ✅      | ❓                     | ❌          | ❌    | Supports tools for Typescript AI Agents                                     |
 | [Superinterface][Superinterface]            | ❌          | ❌        | ✅      | ❓                     | ❌          | ❌    | Supports tools                                                              |
+| [Superjoin AI][Superjoin AI]                | ❌          | ❌        | ✅  | ❓                     | ❌          | ❌    | Supports tools.                                               |
 | [TheiaAI/TheiaIDE][TheiaAI/TheiaIDE]        | ❌          | ❌        | ✅      | ❓                     | ❌          | ❌    | Supports tools for Agents in Theia AI and the AI-powered Theia IDE          |
 | [Tome][Tome]                                | ❌          | ❌        | ✅      | ❓                     | ❌          | ❌    | Supports tools, manages MCP servers.                                        |
 | [TypingMind App][TypingMind App]            | ❌          | ❌        | ✅      | ❓                     | ❌          | ❌    | Supports tools at app-level (appear as plugins) or when assigned to Agents  |
@@ -104,6 +105,7 @@ This page provides an overview of applications that support the Model Context Pr
 [Cody]: https://sourcegraph.com/cody
 [SpinAI]: https://spinai.dev
 [Superinterface]: https://superinterface.ai
+[Superjoin AI]: https://superjoin.ai
 [TheiaAI/TheiaIDE]: https://eclipsesource.com/blogs/2024/12/19/theia-ide-and-theia-ai-support-mcp/
 [Tome]: https://github.com/runebookai/tome
 [TypingMind App]: https://www.typingmind.com
@@ -532,6 +534,12 @@ Programmatically assemble prompts for LLMs using [GenAIScript](https://microsoft
 - SSE transport support
 - Use any AI model from any AI provider (OpenAI, Anthropic, Ollama, others)
 
+### Superjoin AI
+[Superjoin AI](https://superjoin.ai) is a platform for building and orchestrating agents with support for MCP servers.
+
+**Key features:**
+- Use tools from MCP servers in agent workflows
+
 ### TheiaAI/TheiaIDE
 [Theia AI](https://eclipsesource.com/blogs/2024/10/07/introducing-theia-ai/) is a framework for building AI-enhanced tools and IDEs. The [AI-powered Theia IDE](https://eclipsesource.com/blogs/2024/10/08/introducting-ai-theia-ide/) is an open and flexible development environment built on Theia AI.