Slack Daily Summary Setup

A scheduled GitHub Actions workflow posts daily end-of-day summaries of changes shipped to the #platform Slack channel.

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What It Does

Every weekday at 6 PM ET, the workflow:

1. Fetches PRs merged to brainforge-platform in the last 24 hours
2. Formats a summary with PR titles, authors, and links
3. Posts to #platform (channel ID: C08CRQJ636X) via the Slack API

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Required Credentials

GitHub Secret: SLACK_BOT_TOKEN

This is a Slack bot token with chat:write scope, used to post messages as the Brainforge assistant.

Location in 1Password:

• Vault: Brainforge AI Team
• Item name: Look for the Slack bot token associated with the brainforge-assistant app

Adding to GitHub:

1. Go to Repository Settings > Secrets and variables > Actions
2. Click “New repository secret”
3. Name: SLACK_BOT_TOKEN
4. Value: Paste the token from 1Password (starts with xoxb-)

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Workflow Details

Property	Value
File	.github/workflows/daily-platform-summary.yml
Schedule	0 23 * * 1-5 (6 PM ET, Monday-Friday)
Manual trigger	workflow_dispatch (for testing)
Channel	C08CRQJ636X (#platform)

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Testing

Manual Test

# In GitHub UI:
# Actions > Daily Platform EOD Summary > Run workflow

Verify Token Permissions

curl -X POST https://slack.com/api/chat.postMessage \
  -H "Authorization: Bearer YOUR_TEST_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "channel": "C08CRQJ636X",
    "text": "Test message from CLI"
  }'

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Troubleshooting

Issue	Fix
”channel_not_found”	Bot is not in #platform — invite it to the channel
”not_allowed_token_type”	Token missing chat:write scope — regenerate with correct scope
”missing_scope”	Reinstall the Slack app with updated scopes
No PRs showing	Check GITHUB_TOKEN permissions; must have PR read access

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Related

• Workflow: .github/workflows/daily-platform-summary.yml
• Slack config: apps/dagster-pipelines/pipelines/slack_data_transformation/slack_data_transformation_config.yaml