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integrationSlack node
integrationSupabase node

Slack and Supabase integration

Save yourself the work of writing custom integrations for Slack and Supabase and use n8n instead. Build adaptable and scalable Communication, HITL, and Data & Storage workflows that work with your technology stack. All within a building experience you will love.

How to connect Slack and Supabase

  • Step 1: Create a new workflow
  • Step 2: Add and configure nodes
  • Step 3: Connect
  • Step 4: Customize and extend your integration
  • Step 5: Test and activate your workflow

Step 1: Create a new workflow and add the first step

In n8n, click the "Add workflow" button in the Workflows tab to create a new workflow. Add the starting point – a trigger on when your workflow should run: an app event, a schedule, a webhook call, another workflow, an AI chat, or a manual trigger. Sometimes, the HTTP Request node might already serve as your starting point.

Slack and Supabase integration: Create a new workflow and add the first step

Step 2: Add and configure Slack and Supabase nodes

You can find Slack and Supabase in the nodes panel. Drag them onto your workflow canvas, selecting their actions. Click each node, choose a credential, and authenticate to grant n8n access. Configure Slack and Supabase nodes one by one: input data on the left, parameters in the middle, and output data on the right.

Slack and Supabase integration: Add and configure Slack and Supabase nodes

Step 3: Connect Slack and Supabase

A connection establishes a link between Slack and Supabase (or vice versa) to route data through the workflow. Data flows from the output of one node to the input of another. You can have single or multiple connections for each node.

Slack and Supabase integration: Connect Slack and Supabase

Step 4: Customize and extend your Slack and Supabase integration

Use n8n's core nodes such as If, Split Out, Merge, and others to transform and manipulate data. Write custom JavaScript or Python in the Code node and run it as a step in your workflow. Connect Slack and Supabase with any of n8n’s 1000+ integrations, and incorporate advanced AI logic into your workflows.

Slack and Supabase integration: Customize and extend your Slack and Supabase integration

Step 5: Test and activate your Slack and Supabase workflow

Save and run the workflow to see if everything works as expected. Based on your configuration, data should flow from Slack to Supabase or vice versa. Easily debug your workflow: you can check past executions to isolate and fix the mistake. Once you've tested everything, make sure to save your workflow and activate it.

Slack and Supabase integration: Test and activate your Slack and Supabase workflow

Generate and send AI-powered sales quotes with Gmail, OpenAI and Supabase

An automated quote generation system that monitors your inbox, classifies quote requests using AI, calculates intelligent pricing based on historical data, and provides a professional dashboard for review and sending quotes with one click.

https://github.com/nickpuru/proposal-generation

Nodes used in this workflow

Popular Slack and Supabase workflows

Capture, score and route Gmail leads with Groq Llama 3.3, Supabase and Slack

How it works This workflow captures incoming leads from Gmail, validates and stores them in Supabase, then uses AI to score and classify each lead. Based on the classification, leads are automatically routed to the appropriate Slack channel. It runs continuously with a wait cycle to process new and updated leads. The result is a fully automated lead qualification and routing system. Step-by-step Lead capture and validation** Gmail Trigger – Monitors inbox for new lead emails. Get a message – Retrieves full email content. Normalize Incoming Lead Data – Extracts name, message, email, and source. Validate Lead Data – Ensures required fields are present. Lead storage and notification** Notify New Lead (Slack) – Sends alert to Slack channel. Store Lead in Database – Saves lead data in Supabase. AI lead scoring pipeline** Wait – Delays execution before next cycle. Fetch Unscored Leads – Retrieves leads with score = 0. AI Lead Scoring Engine – Generates score and summary. LLM (Scoring) – Provides AI model for scoring. Structured Output Parser – Formats AI response. Map AI Score Output – Prepares score data fields. Update Lead Score – Updates score and status in database. Lead qualification and classification** Fetch Scored Leads – Gets leads ready for routing. Check Message Exists – Filters valid messages. AI Lead Classification Engine – Categorizes lead type. LLM (Classification) – Provides classification logic. Smart routing and notifications** Route Lead by Category – Splits leads by category. Send to Sales Channel – Sends sales leads to Slack. Send to Support Channel – Sends support leads. Send to Billing Channel – Sends billing-related leads. End – Stops workflow for unmatched cases. Why use this? Automatically prioritizes high-quality leads using AI scoring Eliminates manual lead sorting and routing effort Ensures faster response by notifying the right team instantly Centralizes lead data in a structured database Scales easily for high-volume inbound lead processing

Monitor WooCommerce inventory daily and send Slack alerts with Supabase

Daily Inventory Monitoring & Reorder System This workflow automatically monitors your WooCommerce store inventory, calculates stock health based on recent sales, classifies products, computes reorder quantities, assigns urgency levels and sends actionable alerts to Slack. This workflow runs daily to track your inventory and prevent stock issues. It fetches all active products and recent completed orders, calculates units sold in the last 30 days, evaluates stock health, and classifies products as Top Performer, Steady, At Risk, or Consider Discontinue. You receive: Daily inventory check (automated)** Database record of each product’s stock and recommended action** Slack alerts for urgent items and a daily summary** Ideal for teams wanting simple, automated visibility of inventory without manually reviewing stock levels. Quick Start – Implementation Steps Connect your WooCommerce account (products and orders). Connect Supabase to store inventory records. Connect Slack to receive alerts and daily summaries. Set the schedule time for daily checks. Review and adjust stock thresholds (lead time, safety days) if needed. Activate the workflow — daily inventory monitoring begins automatically. What It Does This workflow automates inventory monitoring: Fetches all published products from WooCommerce with current stock. Retrieves completed orders from the last 30 days to calculate sales. Calculates units sold per product and estimates average daily demand. Merges product and sales data for stock evaluation. Classifies products based on stock and demand: Top Performer Steady At Risk Consider Discontinue Calculates safety stock, reorder points, and reorder quantities. Assigns urgency levels (Normal, High, Critical) with clear action messages. Sends Slack alerts for high-priority products. Saves all inventory data into Supabase for tracking. Builds and sends a daily summary with totals, at-risk products, and reorder needs. This ensures your team always knows stock status and can act quickly to prevent shortages. Who’s It For This workflow is ideal for: Inventory managers Operations teams E-commerce teams Supply chain planners Anyone needing automated stock monitoring and alerts Requirements to Use This Workflow To run this workflow, you need: n8n instance** (cloud or self-hosted) WooCommerce API credentials** (products & orders) Supabase account** (database for inventory tracking) Slack workspace** with API permissions Basic understanding of inventory management and reorder logic How It Works Daily Check – Workflow triggers automatically at the scheduled time. Fetch Products & Orders – Gets all published products and completed orders from the last 30 days. Calculate Sales & Demand – Determines units sold and average daily demand per product. Merge Data – Combines stock data with sales to evaluate inventory health. Inventory Classification – Categorizes products as Top Performer, Steady, At Risk, or Consider Discontinue. Reorder Calculations – Computes safety stock, reorder point, and recommended reorder quantity. Assign Urgency & Actions – Flags products as Normal, High, or Critical and sets clear action messages. Immediate Action Check – Identifies high-priority products that need urgent attention. Save to Database – Stores inventory status and recommendations in Supabase. Daily Summary – Builds summary and sends Slack notifications for overall stock health. Setup Steps Import the provided n8n JSON workflow. Connect your WooCommerce account (products and orders). Connect Supabase account and configure the table for inventory tracking. Connect Slack and select channels for urgent alerts and daily summary. Adjust lead time, safety stock days, and any thresholds if needed. Activate the workflow — daily automated inventory monitoring and reporting begins. How To Customize Nodes Customize Reorder Calculations Adjust safety stock days, lead time, or reorder formulas in the Reorder Calculator node. Customize Urgency & Actions Modify logic in the Urgency & Recommendation node to change thresholds or messaging. Customize Slack Alerts You can change: Slack channel Message format Include emojis or tags Customize Database Storage Add extra fields in Supabase to store more product information if needed. Add-Ons (Optional Enhancements) You can extend this workflow to: Track multiple warehouses Send alerts only for specific categories Generate weekly inventory reports Include stock valuation or cost metrics Integrate with other communication channels (email, Teams) Use Case Examples Daily Inventory Check Automatically tracks stock levels for all products. Urgent Stock Alerts Notifies the team immediately when items are At Risk or need reorder. Reporting & Tracking Keeps a historical record of stock health in the database. Troubleshooting Guide | Issue | Possible Cause | Solution | |-------|----------------|---------| | Slack alerts not sent | Invalid credentials | Update Slack API key | | Supabase row not saved | Wrong table/field mapping | Check table and field names | | Wrong stock classification | Thresholds incorrect | Adjust lead time, safety days, or demand calculation | | Workflow not running | Schedule not active | Enable Schedule Trigger node | Need Help? If you need help in customizing or extending this workflow with multi-warehouse tracking, advanced alerts, dashboards or scaling, then our n8n automation developers at WeblineIndia will be happy to assist you.
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Flag duplicate and risky AP invoices with Gmail, OpenAI and Supabase

🚀 How it works Monitors your AP inbox for incoming invoices, extracts structured data with AI, runs duplicate and vendor history checks against Supabase, then scores each invoice for fraud risk — routing suspicious ones to Slack and your AP team before any payment is processed. 📬 Gmail Trigger monitors your accounts payable inbox in real time 🤖 AI Agent extracts invoice number, vendor, amount, currency, dates and line items into structured JSON — no manual data entry 🔍 Checks Supabase for duplicate invoice numbers already in the system 🏢 Checks vendor payment history — flags unknown vendors and amount deviations above 50% from the vendor's historical average 🧠 Second AI Agent scores fraud risk: low / medium / high / critical with specific fraud indicators and a recommended action 🚨 High/critical risk — posts a detailed Slack alert to #invoice-alerts and emails your AP manager with a hold notice 🗄️ Logs every processed invoice to Supabase with risk score and status 🛠️ Set up steps Estimated setup time: ~20 minutes Gmail Trigger — connect Gmail OAuth2; point it at your AP inbox OpenAI — connect OpenAI API credential (used by both AI Agent nodes) Supabase — connect Supabase API credential; create two tables: invoices (invoice_number, vendor_name, amount, status, risk_level, created_at) and vendors (vendor_name, avg_amount, total_invoices, flagged) Slack — connect Slack OAuth2; update the channel name #invoice-alerts Gmail (Send) — connect Gmail OAuth2; replace [email protected] Follow the sticky notes inside the workflow for per-node guidance 📋 Prerequisites Gmail account receiving invoices OpenAI API key (GPT-4o) Supabase project with invoices and vendors tables Slack workspace with an alerts channel Custom Workflow Request with Personal Dashboard [email protected] https://www.smartflowcraft.com/contact More free templates https://www.smartflowcraft.com/n8n-templates

Analyze contract risk from PDFs with OpenAI, Supabase and Slack alerts

Who it's for Legal, Procurement, and Compliance teams at mid-size companies. ESN and agencies selling AI-powered contract review as a service. How it works Upload a contract PDF through a rich form (with metadata: contract type, counterparty, department, submitter). The workflow first checks Supabase for duplicates to avoid re-analyzing the same contract. Then it runs a two-pass AI analysis: Pass 1 classifies the contract (type, parties, dates, jurisdiction), Pass 2 performs deep risk analysis (clause-by-clause risk levels, missing clauses, obligations, negotiation points, compliance flags). Results are scored 0–100 with risk levels (CRITICAL / HIGH / MEDIUM / LOW). A structured report is generated as both Slack Block Kit (rich formatting) and HTML email. High-risk contracts trigger a Slack alert with full blocks and an email report to the submitter. Low-risk contracts get a summary Slack notification. All analyses are stored in Supabase with full metadata for audit. An Error Trigger sends admin notifications to a dedicated Slack channel. How to set up Run the SQL from the "Supabase Schema" sticky note in Supabase SQL Editor. Set environment variables: SUPABASE_URL, SUPABASE_SERVICE_KEY. Add credentials in n8n: OpenAI (Header Auth), Supabase, Slack, Gmail (optional). Configure the Config node: RISK_THRESHOLD, SLACK_CHANNEL, ADMIN_SLACK_CHANNEL, AI_MODEL, ALERT_EMAIL, ENABLE_EMAIL, CONTRACT_LANG. Activate the workflow and share the Form URL with your team.

Detect and move duplicate Google Drive files with Supabase and Slack

This workflow automatically detects duplicate files uploaded to a specific Google Drive folder by generating an MD5 hash of each file and comparing it against a Supabase database. If a duplicate is found, the file is moved to a dedicated Duplicates folder and a Slack notification is sent. All events, including unique uploads, duplicates, race conditions, and errors, are logged for audit purposes. It is designed for teams that handle high file volumes and need reliable, content based deduplication instead of simple filename checks. How it works Monitors a specific Google Drive folder for new files. Normalizes file metadata and downloads the binary content. Generates an MD5 hash from the file binary. Checks Supabase to see if the hash already exists. If duplicate, moves the file to a Duplicates folder and sends a Slack alert. If unique, stores the hash in Supabase. Logs every outcome, including errors and race conditions, in an audit table. Setup steps Connect your Google Drive account and select the folder to monitor. Connect your Supabase account and create the required tables: file_hashes dedup_audit_log Connect your Slack account and select a channel for duplicate alerts. Update the Duplicates folder ID in the Google Drive Move node. Setup typically takes 10 to 15 minutes if your Supabase project is ready.

Escalate negative Facebook Page reviews to Slack and Supabase tickets

Facebook Page Negative Review Watchdog → Slack Escalation + Supabase Ticket This workflow automatically monitors Facebook Page reviews, detects negative feedback (≤ 2 stars), alerts the support team via Slack and attempts to create a support record in Supabase with built-in error handling. This workflow listens for Facebook Page reviews through a webhook. When a review with a rating of 2 stars or less is received, the workflow prepares and standardizes the incoming data, sends an immediate Slack alert to the support team and attempts to store the review as a support record in Supabase. If the database operation fails, a fallback Slack alert is triggered with the relevant error details. You receive: Instant Slack alerts for negative Facebook reviews.** Centralized data preparation via a global configuration step.** Automated support record creation.** Error visibility if storage fails.** No manual monitoring of Facebook reviews.** Ideal for customer support teams that want immediate visibility and structured tracking of negative customer feedback. Quick Start – Implementation Steps Import the provided n8n workflow JSON. Configure the Facebook Page Review Trigger webhook URL in your Facebook integration. Review and adjust the Global Configuration node to match your incoming payload structure. Connect your Slack credentials and select the channel for alerts. Connect your Supabase credentials and configure the table used for storage. Activate the workflow — monitoring starts instantly. What It Does This workflow automates negative review handling: Receives Facebook Page review data via a webhook. Prepares and standardizes key review fields using a global configuration step. Checks whether the review rating is ≤ 2 stars. Sends a formatted Slack alert to the support team with full review context. Attempts to create a support record in Supabase. Detects Supabase insert failures. Sends a fallback Slack alert including the Supabase error message if record creation fails. This ensures no negative review is missed, even if downstream storage encounters issues. Who’s It For This workflow is ideal for: Customer support teams. Social media monitoring teams. SaaS companies handling public feedback. Operations teams needing visibility into failures. Product teams tracking user dissatisfaction. Any business receiving Facebook Page reviews. Requirements To run this workflow, you need: n8n instance** (cloud or self-hosted) Facebook Page review integration** (webhook-based) Slack workspace** with API access Supabase project** with insert permissions Basic understanding of JSON payloads and webhooks How It Works Facebook Page Review Trigger Receives new review data via POST webhook. Global Configuration Maps and standardizes incoming review fields such as rating, review text, reviewer name and page name for consistent downstream usage. Check Negative Review (≤ 2 Stars) Filters reviews and allows execution only for negative ratings. Slack – New Negative Review Alert Sends an immediate Slack notification with: Page name Reviewer name Rating Review text Create Support Case (Supabase) Attempts to store the review as a support record. Check Case Creation Failure Verifies whether the Supabase insert returned an error. Slack – Case Creation Failed Alert Sends a fallback Slack alert including review context and Supabase error details. Setup Steps Import the workflow JSON into n8n. Open Facebook Page Review Trigger and copy the webhook URL. Configure your Facebook system to send review events to this webhook. Review the Global Configuration node and update field mappings if needed. Connect Slack API credentials and select the desired channel. Connect Supabase credentials and configure the target table. Save and activate the workflow. How To Customize Nodes Customize Review Threshold Modify the Check Negative Review (≤ 2 Stars) IF node: Change the rating threshold (e.g., ≤ 1 or ≤ 3) Add additional conditions such as page name or keywords Customize Slack Alerts You may add: Emojis for urgency Mentions (@channel, @support) Links to the Facebook review Severity labels (LOW / HIGH) Customize Data Storage You can extend stored data with: Review timestamp Review ID Review URL Status (Open / In Progress / Resolved) Assigned support agent Add-Ons (Optional Enhancements) You can extend this workflow to: Prevent duplicate review inserts Add retry logic for storage failures Route alerts to different Slack channels per page Create dashboards from stored review data Integrate ticketing tools (Zendesk, Jira) Add sentiment analysis using AI Generate daily or weekly negative review summaries Use Case Examples Customer Support Monitoring Instant awareness of dissatisfied customers. Social Media Reputation Management No need to manually check Facebook reviews. SLA Enforcement Ensure negative feedback is logged and tracked. Operations Visibility Error alerts ensure failures never go unnoticed. Product Feedback Loop Capture recurring complaints for product improvement. Troubleshooting Guide | Issue | Possible Cause | Solution | |-----|---------------|----------| | Slack alert not sent | Invalid Slack credentials | Reconnect Slack API | | Storage insert fails | Table or permission issue | Verify table and access rules | | Error alert always triggers | Incorrect IF condition | Validate error field mapping | | Workflow not running | Workflow inactive | Activate workflow | | Webhook not firing | Incorrect URL | Re-check webhook configuration | Need Help? If you need help extending or productionizing this workflow like adding retries, scaling alerts, improving error handling or integrating additional systems — our n8n automation team at WeblineIndia can assist with advanced automation and workflow design.

Build your own Slack and Supabase integration

Create custom Slack and Supabase workflows by choosing triggers and actions. Nodes come with global operations and settings, as well as app-specific parameters that can be configured. You can also use the HTTP Request node to query data from any app or service with a REST API.

Slack supported actions

Archive
Archives a conversation
Close
Closes a direct message or multi-person direct message
Create
Initiates a public or private channel-based conversation
Get
Get information about a channel
Get Many
Get many channels in a Slack team
History
Get a conversation's history of messages and events
Invite
Invite a user to a channel
Join
Joins an existing conversation
Kick
Removes a user from a channel
Leave
Leaves a conversation
Member
List members of a conversation
Open
Opens or resumes a direct message or multi-person direct message
Rename
Renames a conversation
Replies
Get a thread of messages posted to a channel
Set Purpose
Sets the purpose for a conversation
Set Topic
Sets the topic for a conversation
Unarchive
Unarchives a conversation
Get
Get Many
Get & filters team files
Upload
Create or upload an existing file
Delete
Get Permalink
Search
Send
Send and Wait for Response
Update
Add
Adds a reaction to a message
Get
Get the reactions of a message
Remove
Remove a reaction of a message
Add
Add a star to an item
Delete
Delete a star from an item
Get Many
Get many stars of autenticated user
Get
Get information about a user
Get Many
Get a list of many users
Get User's Profile
Get a user's profile
Get User's Status
Get online status of a user
Update User's Profile
Update a user's profile
Add Users
Create
Disable
Enable
Get Many
Get Users
Update

Supabase supported actions

Create
Create a new row
Delete
Delete a row
Get
Get a row
Get Many
Get many rows
Update
Update a row

FAQs

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