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Connect Slack to GitHub Copilot CLI

Give GitHub Copilot CLI governed access to Slack’s 37 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo GitHub Copilot CLI setup guide

Set up

Add Slack to GitHub Copilot CLI in four steps

Admins approve the server once. Everyone in GitHub Copilot CLI then gets it through the same governed connection.

  1. 1

    Approve Slack in Runlayer

    Add Slack from the catalog and choose who can use it and which of its tools are allowed.

  2. 2

    Connect GitHub Copilot CLI to Runlayer

    Users add the Runlayer Plugin to GitHub Copilot CLI by following Runlayer’s setup guide. GitHub Copilot CLI reaches Slack’s 37 tools through the Runlayer Plugin’s search and execute tools instead of listing each one.

    GitHub Copilot CLI setup guide
  3. 3

    Sign in to Slack

    Each user signs in to Slack with OAuth. Runlayer keeps the tokens out of the client’s configuration.

  4. 4

    Use Slack from GitHub Copilot CLI

    Slack’s approved tools appear in GitHub Copilot CLI. Every call is checked against policy and recorded.

Tools

37 Slack tools in GitHub Copilot CLI

Runlayer policy decides which of these GitHub Copilot CLI users can call. 5 read data only.

  • Add list record

    Adds a new record (row) to a Slack list.

  • Add reaction

    Adds a reaction (emoji) to a Slack message.

  • Complete file upload

    Finalizes a file upload started with slack_get_file_upload_url, using the file_id from that call.

  • Create canvas

    Creates a Slack Canvas document from Canvas-flavored Markdown content.

  • Create conversation

    Create a channel, DM, or group DM.

  • Create list

    Creates a new Slack List with optional columns and a description.

  • Get file upload URL

    Generates a signed upload URL for a file, plus a file ID.

  • Get reactions

    Retrieves all reactions (emoji) on a specific Slack message.

See all 37 Slack tools

Control

What Runlayer can see and stop in GitHub Copilot CLI

Some controls apply to every client at the gateway. Others depend on what GitHub Copilot CLI exposes to Runlayer.

  • Gateway policy (available)

    Every Slack call from GitHub Copilot CLI passes through Runlayer, where your policies can allow, alert, mask, or block it.

  • Audit trail (available)

    Each call is recorded with the user, GitHub Copilot CLI as the client, the tool, and the policy and scanner decisions.

  • Client hooks (available)

    Capture supported prompts, reasoning, local and MCP tool calls, responses, and scanner decisions in real time.

  • Stop a call before it runs (available)

    Runlayer can deny a tool call or permission request before GitHub Copilot CLI runs it.

  • Block output after it runs (available)

    Runlayer can block a tool’s output before GitHub Copilot CLI’s model sees it.

  • Redact output in place (available)

    Runlayer can mask sensitive parts of a successful tool’s output in GitHub Copilot CLI and pass the rest through.

In GitHub Copilot CLI

  • When a tool fails, Runlayer records the error but cannot replace it.

Frequently asked questions

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