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Twin Slack

FreeMaintained

Deterministic Slack Web API twin for agent testing — REST + MCP, SQLite-backed state.

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About

Deterministic Slack Web API twin for agent testing — REST + MCP, SQLite-backed state.

Install Twin Slack in Claude Desktop, Claude Code & Cursor

Recommended · one command, every IDE
unyly install twin-slack

Installs into Claude Desktop, Claude Code, Cursor & VS Code — handles npx, uvx and build-from-source repos for you.

First time? Get the CLI: curl -fsSL https://unyly.org/install | sh

Or configure manually

Run in your terminal:

claude mcp add twin-slack --env ANTHROPIC_API_KEY="" --env TOKEN="" --env TWIN_AUTH_SECRET="" -- npx -y @pome-sh/twin-slack

Step-by-step: how to install Twin Slack

Install Twin Slack in Claude DesktopInstall Twin Slack in Claude CodeInstall Twin Slack in CursorInstall Twin Slack in VS Code

FAQ

Is Twin Slack MCP free?

Yes, Twin Slack MCP is free — one-click install via Unyly at no cost.

Does Twin Slack need an API key?

Yes, it requires environment variables: ANTHROPIC_API_KEY, TOKEN, TWIN_AUTH_SECRET. Unyly injects them into the config during install.

Is Twin Slack hosted or self-hosted?

Self-hosted: the server runs locally on your machine via the install command above.

How do I install Twin Slack in Claude Desktop, Claude Code or Cursor?

Open Twin Slack on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

Changes

Versions and requested access over time.

  • New version published
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  • New version published
  • New version published
  • New version published
  • New version published
  • New version published
  • New version published

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