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OpenTag

Bring Claude Code, Codex or Pi to Slack and Lark.

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Description

Bring Claude Code, Codex or Pi to Slack and Lark. openTag is a free, open source AI coworker that runs on your machine with your own plan or API key.

About OpenTag

What is OpenTag?

OpenTag is an open source AI coworker that connects Slack and Lark to coding agents running on your local machine.

What OpenTag does

OpenTag connects Slack and Lark chat workspaces to coding agent runtimes including Codex, Claude Code, and Pi. When mentioned in a thread, openTag routes tasks to a background process on a Mac or Linux computer using your own model subscription or API key. The platform preserves shared team memory in a git-backed Context Tree repository.

Who OpenTag is for

Software engineers, startup teams, and open source maintainers managing tasks from chat.

How OpenTag works

Users create an agent profile, paste a connection command into their local terminal, and link their agent to a Slack or Lark workspace.

Key features

  • Open source AI coworker with Docker self-hosting support under Apache 2.0.
  • Chat integration with Slack and Lark to delegate tasks directly from message threads.
  • Local agent execution on Mac and Linux using existing subscriptions or API keys.
  • Works with agents including Claude Code, Codex, and Pi.
  • Shared team memory using Context Tree, a file-based, git-backed markdown repository.
  • Connects with development tools including GitHub, Notion, Linear, Jira, and Figma.

Pricing

As listed on opentag.build, checked 8 November 2026. Prices can change; see the site for current terms.

  • Free: open source and free to use with your own model subscriptions or API keys.

Facts from opentag.build, checked 8 November 2026

  • Open source software under Apache 2.0.
  • Connects to Slack and Lark messaging workspaces.
  • Runs locally on Mac and Linux computers.
  • Works with Claude Code, Codex, and Pi runtimes.

Written from OpenTag's own website (Homepage). The maker can claim this listing to edit it.

Categories

Open SourceDeveloper ToolsAI & Machine Learning

Frequently asked questions

What is openTag?

openTag is an open source AI coworker that lives in Slack and Lark and runs coding agents on your computer.

Which messaging platforms are supported?

openTag supports Slack and Lark.

Which agent runtimes can I connect?

It supports agent runtimes including Claude Code, Codex, and Pi.

How is team memory managed?

Team memory is stored in Context Tree, a file-based, git-backed memory layer hosted in your GitHub organization.

Is openTag free?

Yes. openTag is free and open source under the Apache 2.0 license.

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