Cyrus Setup Slack

CRITICAL: Never use Read, Edit, or Write tools on ~/.cyrus/.env or any file inside ~/.cyrus/. Use only Bash commands (grep, printf >>, etc.) to interact with env files — secrets must never be read into the conversation context. Never scrape, extract, or read secret values from web pages — guide the user to copy them manually.

Setup Slack

Creates a Slack application from a pre-built manifest so Cyrus can respond to messages in Slack channels.

Step 1: Check Existing Configuration

grep -E '^SLACK_BOT_TOKEN=' ~/.cyrus/.env 2>/dev/null

If SLACK_BOT_TOKEN is already set, inform the user:

Slack is already configured. Skipping this step. To reconfigure, remove SLACK_BOT_TOKEN and SLACK_SIGNING_SECRET from ~/.cyrus/.env and re-run.

Skip to completion.

Step 2: Read Variables

Read the base URL (set by setup-endpoint):

grep '^CYRUS_BASE_URL=' ~/.cyrus/.env | cut -d= -f2-

You also need AGENT_NAME and AGENT_DESCRIPTION — these were collected in Step 0 of the orchestrator and should be available from the conversation context.

Step 3: Build Manifest JSON

Construct the manifest, substituting <AGENT_NAME>, <AGENT_DESCRIPTION>, and <CYRUS_BASE_URL> with actual values.

IMPORTANT: Use the manifest template EXACTLY as shown below. The event subscription path MUST be /slack-webhook (not /slack/events or any other path). This matches the route registered by SlackEventTransport in the Cyrus codebase.

NOTE: this list of scopes must be kept in sync with the Slack App configuration and the list of scopes defined at https://github.com/cyrusagents/cyrus-hosted/blob/main/apps/app/src/lib/slack/constants.ts. If you change scopes here, propose matching changes there and update any live Slack App configuration that relies on this manifest.

{
    "display_information": {
        "name": "<AGENT_NAME>",
        "description": "<AGENT_DESCRIPTION>",
        "background_color": "#00240e"
    },
    "features": {
        "bot_user": {
            "display_name": "<AGENT_NAME>",
            "always_online": true
        }
    },
    "oauth_config": {
        "redirect_urls": [
            "<CYRUS_BASE_URL>/slack/oauth/callback"
        ],
        "scopes": {
            "user": [
                "canvases:read",
                "canvases:write",
                "channels:history",
                "chat:write",
                "groups:history",
                "im:history",
                "mpim:history",
                "users:read",
                "users:read.email",
                "reactions:write",
                "search:read.public",
                "search:read.private",
                "search:read.mpim",
                "search:read.im",
                "search:read.files",
                "search:read.users"
            ],
            "bot": [
                "groups:read",
                "app_mentions:read",
                "assistant:write",
                "canvases:write",
                "channels:history",
                "channels:read",
                "chat:write",
                "chat:write.customize",
                "groups:history",
                "im:history",
                "im:read",
                "files:read",
                "files:write",
                "mpim:history",
                "reactions:write",
                "search:read.files",
                "search:read.public",
                "search:read.users",
                "users:read",
                "users:read.email",
                "mpim:read"
            ]
        },
        "pkce_enabled": false
    },
    "settings": {
        "event_subscriptions": {
            "request_url": "<CYRUS_BASE_URL>/slack-webhook",
            "bot_events": [
                "app_mention",
                "member_joined_channel",
                "message.channels",
                "message.groups",
                "message.mpim",
                "message.im"
            ]
        },
        "org_deploy_enabled": false,
        "socket_mode_enabled": false,
        "token_rotation_enabled": false
    }
}

Step 4: Create Slack App

All paths use the "From a manifest" flow. Never create the app "From scratch".

Determine which browser automation mode to use (see orchestrator rules):

1. If claude-in-chrome MCP tools are available → use Path A-1 (claude-in-chrome)
2. If agent-browser is installed and a Chrome debug session is connected → use Path A-2 (agent-browser)
3. Otherwise → use Path B (manual)

Path A-1: claude-in-chrome Automation

Use the mcp__claude-in-chrome__* tools to navigate and interact with the user's existing Chrome browser.

1. Navigate to https://api.slack.com/apps
2. Click Create New App
3. Select From a manifest in the modal
4. Pick the workspace
5. Click Next
6. Select JSON tab and paste the manifest from Step 3 (fully substituted with real values)
7. Click Next, review, click Create

After creation, the app lands on the Basic Information page. Do NOT take screenshots of credential pages. Proceed to Step 5 (credential collection).

Path A-2: agent-browser Automation

If agent-browser is connected to a Chrome debug session:

4a. Navigate to Slack app creation

agent-browser navigate "https://api.slack.com/apps"

Take a screenshot to verify the page loaded and the user is logged in.

4b. Click "Create New App"

agent-browser click "button:text('Create New App')"

4c. Select "From a manifest" in the modal

agent-browser click "button:text('From a manifest')"

4d. Select workspace

Take a screenshot to see the workspace picker. Click the appropriate workspace. If multiple are listed, ask the user which one.

agent-browser click "button:text('Next')"

4e. Select JSON format and paste manifest

Click the JSON tab if not already selected:

agent-browser click "button:text('JSON')"

Paste the manifest using JavaScript:

agent-browser eval "var editor = document.querySelector('textarea, [role=\"textbox\"], .ace_editor textarea, .CodeMirror textarea'); if (editor) { var nativeInputValueSetter = Object.getOwnPropertyDescriptor(window.HTMLTextAreaElement.prototype, 'value').set; nativeInputValueSetter.call(editor, JSON.stringify(<MANIFEST_JSON>, null, 2)); editor.dispatchEvent(new Event('input', { bubbles: true })); 'pasted'; } else { 'editor not found'; }"

If that doesn't work, try:

agent-browser click "textarea"
agent-browser keyboard "Control+a"
agent-browser type '<MANIFEST_JSON_STRING>'

Take a screenshot to verify, then click Next:

agent-browser click "button:text('Next')"

4f. Review and create

Take a screenshot to verify the summary, then click Create:

agent-browser click "button:text('Create')"

After creation, do NOT screenshot credential pages or attempt to scrape secrets. Proceed to Step 5.

Path B: Manual Guided Setup

Guide the user through the manifest flow:

Create a Slack App

1. Go to https://api.slack.com/apps
2. Click Create New App
3. In the modal, select From a manifest
4. Pick the workspace you want to associate the app with
5. Click Next
6. Select JSON format and paste the following manifest:

Print the fully-substituted manifest JSON for the user to copy.

7. Click Next, review the summary, then click Create

Proceed to Step 5.

Step 5: Install App & Collect Credentials

After the app is created (via any path), guide the user through installation and credential collection. The agent must NOT scrape, read, or extract secrets from the page. The user copies them manually.

5a. Install to Workspace

Tell the user:

1. In your Slack app settings, go to Install App in the left sidebar
2. Click Install to Workspace
3. Click Allow

If using browser automation (A-1 or A-2), the agent can navigate to the Install App page and click the buttons — but must stop after installation completes and not screenshot the resulting page.

5b. Add Credential Placeholders

Add placeholder lines to the env file so the user can fill them in:

grep -q '^SLACK_BOT_TOKEN=' ~/.cyrus/.env || echo 'SLACK_BOT_TOKEN=' >> ~/.cyrus/.env
grep -q '^SLACK_SIGNING_SECRET=' ~/.cyrus/.env || echo 'SLACK_SIGNING_SECRET=' >> ~/.cyrus/.env

5c. Open env file for editing

# macOS
code --new-window ~/.cyrus/.env 2>/dev/null || open -a TextEdit ~/.cyrus/.env
# Linux
code --new-window ~/.cyrus/.env 2>/dev/null || xdg-open ~/.cyrus/.env

5d. Guide the user to copy credentials

Tell the user:

I've opened ~/.cyrus/.env. You need to paste two values:

1. Bot User OAuth Token — go to your app's OAuth & Permissions page, copy the Bot User OAuth Token (starts with xoxb-), and paste it after SLACK_BOT_TOKEN=

2. Signing Secret — go to your app's Basic Information page, scroll to App Credentials, click Show next to Signing Secret, copy it, and paste it after SLACK_SIGNING_SECRET=

Save and close the file when done.

5e. Wait and verify

After the user confirms they've saved, verify:

grep -c '^SLACK_BOT_TOKEN=.' ~/.cyrus/.env
grep -c '^SLACK_SIGNING_SECRET=.' ~/.cyrus/.env

Both must return 1 (the . after = ensures the value is not empty). If either is 0, ask the user to check the file.

Completion

✓ Slack app created from manifest and installed ✓ Bot token and signing secret saved to ~/.cyrus/.env

Note: The event subscription request_url will fail Slack's verification challenge until Cyrus is actually running. Once Cyrus is started, go to the app's Event Subscriptions page and re-enter the URL to trigger verification, or Slack will retry automatically.