nanochat

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Turn any MCP Server into a ready-to-go AI Agent — in minutes.

Nanochat is a lightweight, self-hosted chat interface that connects directly to any Model Context Protocol (MCP) server and exposes it as a fully functional AI agent. Drop in your agent.yaml, point it at your MCP server, and your team has a branded, conversational interface to interact with your tools — no extra infrastructure required.

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Most MCP servers expose powerful tools — databases, APIs, file systems, internal services — but have no user-facing interface. Nanochat bridges that gap:

• Any MCP Server → Conversational Agent. Connect Nanochat to your MCP server and it automatically discovers all available tools, making them accessible through natural language.
• Zero friction for end users. No login, no accounts. Each user gets an anonymous session automatically — just open the browser and start chatting.
• Brand it as your own. Configure the agent name, description, avatar, system prompt, and starter messages through a single YAML file at deploy time.
• Self-hosted and private. Runs entirely in your infrastructure. Your conversations, your data.

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• MCP tool calling — full agentic loop with real-time tool call visibility in the chat
• Streaming responses — tokens streamed live via Server-Sent Events
• File & image input — attach images (vision) and PDFs; files persist across the conversation and can be re-sent in follow-up messages
• Agent configuration — customize name, avatar, description, system prompt, and starter messages via agent.yaml
• Per-user settings — each user configures their own OpenAI API key and model through the UI
• Conversation history — persistent per-session history stored in SQLite
• Collapsible sidebar — clean ChatGPT-style UI that works on smaller screens