OpenTag
OpenTag: The Channels SDK starter application, a self-hosted AI on-call triage bot for Slack and Microsoft Teams, built with AG-UI and LangGraph. Fork it and ship your own.
OpenTag is an open-source, self-hosted AI agent for Slack and Microsoft Teams that handles knowledge work and on-call triage through natural conversation. Built with LangGraph and the Channels SDK, it transforms spreadsheet uploads into native charts, creates Linear issues with approval gates, conducts cited web research, and renders rich UI components directly in chat threads. Developers can fork the complete application, customize the agent's persona and tools, and deploy it to their own workspace with managed channel infrastructure from CopilotKit Intelligence or self-hosted runners.
Key Features
Use Cases
- 01Automated on-call triage and incident response in Slack channels
- 02Converting CSV uploads into visual charts and data insights without leaving chat
- 03Creating and tracking Linear issues or Notion pages with human approval workflow
- 04Conducting live web research with cited sources for team knowledge requests
- 05Repository code search and CI status queries via GitHub integration
- 06Analytics exploration and PostHog data queries through conversational interface
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OpenTag — FAQ
What is OpenTag?+
OpenTag is a self-hosted AI agent built with LangGraph that provides knowledge work assistance and on-call triage capabilities in Slack and Microsoft Teams. It's designed as a starter application for the Channels SDK that you can fork, customize, and deploy under your own name.
How do I install and run OpenTag?+
Clone the repository, install dependencies with pnpm, run 'npx copilotkit@latest channels setup' to create a managed channel, configure your .env file with API keys, and run 'pnpm dev' to start both the Python agent and Node runtime. Then invite the bot to a Slack channel with '/invite @OpenTag'.
What prerequisites and API keys does OpenTag require?+
OpenTag requires Node.js 22+, Python 3.12, a CopilotKit account, an OpenAI API key, and a Slack workspace for installation. Optional sources include Tavily (web research), GitHub PAT, PostHog API key, Linear API key, Notion MCP credentials, and Daytona for coding tasks.
Which AI clients does OpenTag work with?+
OpenTag is a standalone agent application that operates in Slack and Microsoft Teams workspaces, not a plugin for AI coding assistants. It runs as its own service and communicates through chat platforms rather than integrating into IDE-based AI clients.
Is OpenTag free to use?+
Yes, OpenTag is open-source under the MIT license. However, it requires API keys for OpenAI (paid) and optionally CopilotKit Intelligence managed channels (free plan available), plus any third-party services like Tavily, Linear, or Notion that you choose to integrate.
Can I customize the agent behavior and tools?+
Yes, OpenTag is built to be forked and customized. The persona lives in agent/prompts/, tools are in agent/tools.py, UI components are in app/components/, and you can even swap the entire LangGraph agent by pointing AGENT_URL to any AG-UI-compatible agent.
How do I install OpenTag?+
Open the source repository on GitHub and follow its README. OpenTag is a agent — MCP Agents Market links you directly to the official repo.
Is OpenTag free?+
OpenTag is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.