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slack-gpt

Slack GPT integration

Docker: nakamasato/slack-gpt

Environment Varibales

  • SLACK_BOT_TOKEN: Slack bot token
  • SIGNING_SECRET: Slack signing secret
  • DEDICATED_CHANNELS (optional): Dedicated channel for the bot
  • GPT_MODEL (optional): GPT model (e.g. gpt-3.5-turbo, gpt-4, gemini-pro) (default: gpt-3.5-turbo)
  • OpenAI
    • OPENAI_ORGANIZATION: OpenAI organization
    • OPENAI_API_KEY: OpenAI API key
  • Gemini
    • GOOGLE_API_KEY: Google API key

Note

If you use Gemini, you need to generate an API key. gcloud services api-keys create --api-target=service=generativelanguage.service.com --display-name "Gemini API Key" --project $PROJECT

Create Slack app

  1. Create a Slack app https://api.slack.com/apps/
  2. Grant permission to the bot (chat:write, app_mentions:read, channels:history, reactions:read, reactions:write)
  3. Configure Event Subscriptions

Deploy to GCP Cloud Run

1. Set environment variables

PROJECT=xxxx
REGION=asia-northeast1
SA_NAME=slack-gpt

2. Create service account

gcloud iam service-accounts create $SA_NAME --project $PROJECT

3. Create Secrets and grant permission to the service account

# slack bot token
gcloud secrets create slack-bot-token --replication-policy automatic --project $PROJECT
echo -n "xoxb-xxx" | gcloud secrets versions add slack-bot-token --data-file=- --project $PROJECT
gcloud secrets add-iam-policy-binding slack-bot-token \
    --member="serviceAccount:${SA_NAME}@${PROJECT}.iam.gserviceaccount.com" \
    --role="roles/secretmanager.secretAccessor" --project ${PROJECT}

# slack signing secret
gcloud secrets create slack-signing-secret --replication-policy automatic --project $PROJECT
echo -n "xxx" | gcloud secrets versions add slack-signing-secret --data-file=- --project $PROJECT
gcloud secrets add-iam-policy-binding slack-signing-secret \
    --member="serviceAccount:${SA_NAME}@${PROJECT}.iam.gserviceaccount.com" \
    --role="roles/secretmanager.secretAccessor" --project ${PROJECT}

# openai organization
gcloud secrets create openai-organization --replication-policy automatic --project $PROJECT
echo -n "xxx" | gcloud secrets versions add openai-organization --data-file=- --project $PROJECT
gcloud secrets add-iam-policy-binding openai-organization \
    --member="serviceAccount:${SA_NAME}@${PROJECT}.iam.gserviceaccount.com" \
    --role="roles/secretmanager.secretAccessor" --project ${PROJECT}

# openai api key
gcloud secrets create openai-api-key --replication-policy automatic --project $PROJECT
echo -n "xxx" | gcloud secrets versions add openai-api-key --data-file=- --project $PROJECT
gcloud secrets add-iam-policy-binding openai-api-key \
    --member="serviceAccount:${SA_NAME}@${PROJECT}.iam.gserviceaccount.com" \
    --role="roles/secretmanager.secretAccessor" --project ${PROJECT}

4. Deploy to Cloud Run

gcloud run deploy slack-gpt \
    --image nakamasato/slack-gpt:0.0.5 \
    --platform managed \
    --region $REGION \
    --allow-unauthenticated \
    --service-account ${SA_NAME}@${PROJECT}.iam.gserviceaccount.com \
    --set-secrets=SLACK_BOT_TOKEN=slack-bot-token:latest \
    --set-secrets=SIGNING_SECRET=slack-signing-secret:latest \
    --set-secrets=OPENAI_ORGANIZATION=openai-organization:latest \
    --set-secrets=OPENAI_API_KEY=openai-api-key:latest \
    --project ${PROJECT}

5. Get Cloud Run URL

URL=$(gcloud run services describe slack-gpt --project $PROJECT --region ${REGION} --format json | jq -r .status.url)

6. Configure Slack Event Subscriptions

Use this ${URL}/slack/events for Slack Event Subscriptions.

Choose app_mention in Subscribe to bot events section

7. Check

Check with curl

curl -H 'Content-Type: application/json' -X POST -d '{"type": "url_verification", "challenge": "test"}' $URL/slack/events
{"challenge": "test"}

Check on Slack

Ref