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OpenAgent — The Open Agent Platform

OpenAgent is an open-source personal AI assistant platform that connects 30+ model providers, builds intelligent agents with MCP tool use, and deploys across 20+ messaging channels.

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About this tool

OpenAgent is an open-source personal AI assistant platform that lets you build and deploy personal AI agents with MCP tool use across messaging channels.

Key Capabilities

  • Multi-model support: Connect 30+ model providers, including DeepSeek, OpenAI, Anthropic, and others, by supplying the corresponding API key.
  • MCP tool use: Add tools to your agent via MCP servers, enabling it to search the internet, browse live websites, execute code, or call external APIs. Tools are queried at conversation start, and changes to the server's exposed tools are reflected immediately in new conversations without restarting OpenAgent.
  • Knowledge Retrieval (RAG): Index your own documents so the agent retrieves relevant passages at query time to provide grounded, accurate answers.
  • Multi-channel deployment: Deploy agents across 20+ messaging channels.
  • Built-in tools: Pre-packaged built-in tool implementations work out of the box.
  • Cross-platform: Supports Linux, macOS, and Windows with corresponding binaries.
  • Air-gap deployable: Suitable for regulated environments.

How

to Use Obtain an API key from a model provider, configure MCP servers to add tools, and optionally guide tool selection via system prompt. Built-in Skills can be extended by creating custom Skills.

Security

Note Tools like Shell or Browser can perform actions on your host machine; configure them carefully.

Best for
  • self-hosters
  • regulated environments
  • developers
  • no-code builders
Use cases
  • index documents for RAG knowledge retrieval
  • deploy agents across messaging channels
  • connect MCP tools for web search and code execution
  • build a chat assistant with any LLM provider
  • air-gapped deployment for regulated environments
Strengths
  • Open source and free
  • Supports 30+ model providers
  • MCP tool use capability
  • Deploys across 20+ messaging channels
  • Air-gap deployable
  • Cross-platform support
Limitations
  • Requires your own API key from a model provider
  • Official pages do not disclose free-tier limits or usage caps

Features & use cases

Connect 30+ model providersMCP tool useKnowledge Retrieval (RAG)Deploy across 20+ messaging channelsBuilt-in toolsCross-platform (Linux, macOS, Windows)Air-gap deployableOpen source

Quick facts

Self-hosting supported

Sources

Every profile keeps its sources and latest verification date.
01https://www.openagentai.org/docs/add-a-knowledge-base

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