Route Reddit Buying Signals to Slack (Bright Data + GPT-5.6)

Turn Reddit buying chatter into Slack signals—automatically (Bright Data + GPT-5.6)

This n8n workflow searches Reddit every day for exact-phrase queries, identifies new buying-related threads, and routes classified signals into dedicated Slack channels—using Bright Data Web Unlocker for fetching and OpenAI (GPT-5.6) for classification.

What this workflow does

• Runs on a schedule: executes daily at 08:00.
• Searches Reddit per watched phrase: builds a Reddit search URL for each item in watch_phrases, then fetches results pages through Bright Data Web Unlocker as JSON.
• Filters to relevant, fresh threads: extracts recent threads and filters out posts that are too old, have too few comments, are NSFW, or match a subreddit_blocklist.
• Deduplicates using an n8n Data Table: checks each thread against the n8n Data Table named reddit_threads_seen (by post_id) to keep only new, unreported threads.
• Classifies with OpenAI (GPT-5.6): sends each new thread to GPT-5.6 to label it as buying_intent, competitor_mention, or content_idea, including a short reason.
• Posts to the right Slack channels: publishes a formatted message for each classified thread to separate channels (e.g., slack_buying, slack_competitor, slack_content).

Use cases

• SaaS operators monitoring competitors and customer intent from real Reddit discussions.
• Product and marketing teams turning fresh threads into content ideas on the same day.
• Automation engineers building a reliable Reddit signal pipeline with deduplication and routing.

Technical details

• Integrations/Credentials: Bright Data Web Unlocker (HTTP Header Auth), OpenAI (model configured as gpt-5.6-terra), Slack OAuth.
• Workflow components: if, set, code, no op, Slack, and switch for routing.
• Configuration: set watch_phrases, lookback_days, plus optional min_comments and subreddit_blocklist.