Descriptions:
Nate Herk walks through a two-part n8n automation that converts post-meeting data from Fireflies.ai into a client-ready proposal slide deck via the Gamma API, with a human-approval gate in between. The system is designed for consultants and sales teams who need polished follow-up deliverables quickly after discovery calls.
Part one captures meeting data via Fireflies webhook — including a deliberate wait step to ensure the AI summary has finished processing before requesting the full transcript — and logs the title, attendees, meeting summary, and a status field to a Google Sheet. Herk explains a non-obvious Fireflies behavior: the webhook payload itself contains minimal data, requiring a separate API call with the meeting ID to retrieve the actual transcript and metadata.
Part two triggers on new Google Sheet rows and routes through a human-approval node before engaging the proposal generator. The AI agent is given a detailed system prompt defining its role as a senior solutions consultant, specifying a structured proposal format (executive summary, problem statement, proposed solution, ROI analysis, implementation roadmap, and success metrics), and explicitly instructing it not to mention AI generation or include follow-up questions. The resulting text block is then sent to Gamma’s generate API endpoint, which returns a fully designed slide deck. Herk covers the Gamma API setup in detail, including how he adapted the curl request from Gamma’s documentation into an n8n HTTP request node. The workflow template is available as a free download through his School community.
📺 Source: Nate Herk · Published January 19, 2026
🏷️ Format: Workflow Case Study
