{"product_id":"n8n-postgres-pgvector-consent-check-openai-embeddings-slack-alerts","title":"n8n Postgres pgvector Consent Check + OpenAI Embeddings, Slack Alerts","description":"\u003ch3\u003eNightly PGVector embeddings only when consent allows—plus Slack alerts\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow automatically reads unindexed knowledge base records from \u003cstrong\u003ePostgres\u003c\/strong\u003e, checks each one against a \u003cstrong\u003ePostgres consent register\u003c\/strong\u003e, and only generates \u003cstrong\u003eOpenAI embeddings\u003c\/strong\u003e to store in \u003cstrong\u003epgvector\u003c\/strong\u003e when the required lawful conditions are satisfied. Decisions (included, refused, or held) are logged to a manifest and the workflow posts a summary to \u003cstrong\u003eSlack\u003c\/strong\u003e whenever any records are refused or held.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRuns nightly\u003c\/strong\u003e on a schedule to keep your pgvector index up to date.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReads unindexed documents\u003c\/strong\u003e from \u003ccode\u003ekb_documents\u003c\/code\u003e (using \u003ccode\u003eindexed_at\u003c\/code\u003e to identify what still needs embedding).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoads consent information\u003c\/strong\u003e from a separate \u003ccode\u003econsent_register\u003c\/code\u003e table in Postgres.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePer-record consent matching \u0026amp; eligibility checks\u003c\/strong\u003e evaluate whether each document is eligible based on:\n    \u003cul\u003e\n      \u003cli\u003eRequired purpose\u003c\/li\u003e\n      \u003cli\u003eRetention window\u003c\/li\u003e\n      \u003cli\u003eWithdrawal status\u003c\/li\u003e\n      \u003cli\u003eProfiling objections\u003c\/li\u003e\n      \u003cli\u003eSpecial category flags\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEmbeds only eligible text\u003c\/strong\u003e: eligible documents are chunked, embedded via \u003cstrong\u003eOpenAI\u003c\/strong\u003e, and inserted into your \u003cstrong\u003epgvector\u003c\/strong\u003e index table with metadata.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWrites an inclusion manifest\u003c\/strong\u003e entry recording the decision and lawful ground; marks eligible documents as indexed in Postgres.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLogs refused\/held decisions\u003c\/strong\u003e to the same manifest table with the specific refusal\/hold ground.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosts a run report to Slack\u003c\/strong\u003e when any records are refused or held.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eKeeping a consent-aware knowledge base index in sync for RAG search using pgvector.\u003c\/li\u003e\n  \u003cli\u003ePreventing embedding of withdrawn or non-eligible records before they enter vector search.\u003c\/li\u003e\n  \u003cli\u003eOperational compliance monitoring: Slack alerts highlight refused\/held items for review.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePostgres\u003c\/strong\u003e integration: reads \u003ccode\u003ekb_documents\u003c\/code\u003e + \u003ccode\u003econsent_register\u003c\/code\u003e, stores vectors in a \u003cstrong\u003epgvector\u003c\/strong\u003e table, and writes to \u003ccode\u003eindex_manifest\u003c\/code\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpenAI\u003c\/strong\u003e embeddings: generates embeddings for eligible document chunks (model name must match your OpenAI access).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlack OAuth\u003c\/strong\u003e: sends notifications when refusals\/holds occur.\u003c\/li\u003e\n  \u003cli\u003eWorkflow nodes\/logic include: \u003cstrong\u003eif\u003c\/strong\u003e, \u003cstrong\u003eset\u003c\/strong\u003e, \u003cstrong\u003ecode\u003c\/strong\u003e, \u003cstrong\u003eno op\u003c\/strong\u003e, \u003cstrong\u003emerge\u003c\/strong\u003e, and \u003cstrong\u003eslack\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":46042471006387,"sku":"N8N-19639","price":68.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/p9LN1SxTC2m6VaWIvsWUU_RM2GEWcf.png?v=1789549519","url":"https:\/\/buyflowscripts.com\/products\/n8n-postgres-pgvector-consent-check-openai-embeddings-slack-alerts","provider":"N8N Commerce","version":"1.0","type":"link"}