{"product_id":"n8n-anthropic-writer-critic-drafting-workflow-google-sheets","title":"n8n Anthropic Writer-Critic Drafting Workflow + Google Sheets","description":"\u003ch3\u003eDraft smarter with n8n: an Anthropic Writer-Critic workflow that iterates until your rubric says “approved”\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow generates a draft using an \u003cstrong\u003eAnthropic\u003c\/strong\u003e chat model, then critiques and revises it against your \u003cstrong\u003ehouse rules\u003c\/strong\u003e and \u003cstrong\u003erubric\u003c\/strong\u003e—automatically looping until it meets an approval threshold or stops for defined reasons. Each run is logged to \u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e, with an optional webhook notification when it finishes.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStarts\u003c\/strong\u003e when you run it manually or via an \u003cstrong\u003en8n Chat trigger\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoads configuration\u003c\/strong\u003e inputs: house rules, rubric, approval score, maximum rounds, and a default brief; initializes loop state using your brief.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWrites with an Anthropic writer agent\u003c\/strong\u003e to produce or revise a draft and return a structured result (draft plus self-assessment and any placeholders needing human input).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCritiques with an Anthropic critic agent\u003c\/strong\u003e to score the draft and return structured outcomes: must-fix items, optional improvements, and any rule violations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDecides to continue\u003c\/strong\u003e using three stop conditions: (1) approved with no must-fix items, (2) round limit reached, or (3) score stalled across recent rounds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerates revision instructions\u003c\/strong\u003e for the next round by converting the critique into actionable updates.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinalizes output\u003c\/strong\u003e with exit reason, final draft, remaining must-fix items\/human inputs, and a score history.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLogs results to Google Sheets\u003c\/strong\u003e and can \u003cstrong\u003ePOST\u003c\/strong\u003e a completion notice to a configured webhook URL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIteratively refine blog posts, product pages, or SOP drafts to match internal brand and quality standards.\u003c\/li\u003e\n  \u003cli\u003eEnforce consistent compliance and formatting using house rules + a scored rubric.\u003c\/li\u003e\n  \u003cli\u003eRun an approval-gated writing pipeline and keep an auditable ledger of draft iterations in Google Sheets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntegrations\/nodes reflected in the workflow: \u003cstrong\u003eif\u003c\/strong\u003e, \u003cstrong\u003eset\u003c\/strong\u003e, \u003cstrong\u003ecode\u003c\/strong\u003e, \u003cstrong\u003esticky note\u003c\/strong\u003e, \u003cstrong\u003ehttp request\u003c\/strong\u003e, and \u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eRelies on an \u003cstrong\u003eAnthropic\u003c\/strong\u003e chat model (writer + critic agents) to draft, critique, score, and produce structured revision instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSetup note:\u003c\/strong\u003e add your Anthropic (or compatible) chat model credentials to the workflow (details continue after the provided excerpt).\u003c\/p\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":45872820551859,"sku":"N8N-18475","price":10.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/Jkf-AEUZcyJkeMDw_Bk8P_i7f4uGwG.png?v=1787217033","url":"https:\/\/buyflowscripts.com\/products\/n8n-anthropic-writer-critic-drafting-workflow-google-sheets","provider":"N8N Commerce","version":"1.0","type":"link"}