Quick Overview
Quick Overview This workflow collects a campaign brief via an n8n form, uses Spendict to generate a targeting strategy, uses OpenAI to draft platform-specific ad variants, then has Spendict score and gate each draft before logging vetted variants to Google Sheets and posting updates to Slack. How it works Receives a campaign brief (product, platform, budget, objective, and optional funnel stage/vertical) via an n8n form submission. Sends the brief to Spendict’s strategize-targeting API to generate a targeting plan with segments, budget split, setup notes, and key risks. Formats the strategy into a readable message and posts the targeting plan to Slack. Sends the strategy summary and audience approach to the OpenAI Chat Completions API to generate three ad variants (headline + primary text) for the selected platform. Assesses each ad variant with Spendict’s assess API to get a score and a deterministic verdict (run, fix_first, or kill). Logs non-killed variants (including score and top recommended fix) to Google Sheets and posts a Slack message summarizing how many vetted variants were added. Setup Add a Spendict API key and configure HTTP Header Auth (Authorization: Bearer …) for both Spendict HTTP requests. Add an OpenAI API key and configure HTTP Header Auth (Authorization: Bearer …) for the OpenAI HTTP request. Connect Google Sheets credentials and select the target spreadsheet and sheet in the append step where variants are logged. Create or choose a Slack Incoming Webhook and replace the webhook URL in both Slack webhook requests. An n8n automation workflow template by Spendict.
Spendict
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