Gilfoyle-persona Slack chatbot with AI agent tools

How it works

1. 1.A Webhook listens for POST requests on the slack-gilfoyle path from Slack events.
2. 2.An IF node checks the bot_id field to discard bot messages and only process human messages.
3. 3.The message text is passed to the Agent with a system message defining Gilfoyle's cynical, cutting persona.
4. 4.The Agent uses GPT-4 as its language model with window buffer memory keyed by channel ID (context window of 30).
5. 5.The Agent may invoke SerpAPI and Wikipedia tools to look up information when necessary.
6. 6.The Agent output is sent as a Slack direct message to the user who posted the original message.

Use cases

• A team Slack assistant that answers questions with a distinctive sarcastic persona.
• Fetching information from Wikipedia and web search without leaving Slack.
• A reference example for building an AI-agent Slack bot with per-channel conversation memory.

Requirements

• A Slack app configured with Event Subscriptions that deliver message events to the n8n Webhook URL.
• Slack API credentials configured in n8n for the message-sending node.
• OpenAI API credentials for the Chat OpenAI node (gpt-4 model).
• SerpAPI credentials for the search tool; the Wikipedia tool requires no credentials.

Setup and testing in n8n

1. Activate the workflow and set the Webhook URL in the Slack app's event subscription settings.
2. Post a text message as a user in a subscribed channel and verify a Gilfoyle-style reply arrives as a direct message.
3. Post a message from another bot and confirm it is ignored via the No Operation branch.
4. Ask a question requiring lookup and verify the Agent invokes the SerpAPI or Wikipedia tool.

Service Value

Ideal as a smart automation service combining integrations and AI to produce ready-to-use results.