Slack to Square Integration | MESA
Connect Slack to Square and automate your tasks
Describe to build
Activity reports
Fully supported
MESA's Slack to Square integration is the fastest way to sync data between the two — without touching a line of code. Choose which fields to send, how they're formatted, and when the sync happens. Start with a pre-built template, customize it with AI, or build something completely unique in under 10 minutes.
★★★★★ 4.9 rating on Shopify App Store
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Trusted by 1,000+ Shopify merchants
Why integrate Slack with Square
The Slack to Square integration helps you sync data, automate manual tasks, and keep your stack aligned — without writing code.
Alert your team the moment stock runs low
MESA watches inventory levels across your catalog and sends a Slack message the instant a threshold is hit. Your team can act before customers ever see a stockout.
Keep your team in the loop on every order
When an order comes in with specific conditions — high value, wholesale, flagged address — MESA sends a Slack alert instantly. No one has to check dashboards to know what needs attention.
Replace manual status updates with automatic ones
When a fulfillment status changes in Shopify, MESA posts the update to the right Slack channel. Your ops team always knows where orders stand without chasing tracking numbers.
Sync Square transactions into your Shopify customer records
When a purchase is made in Square — in-store, at an event, at a pop-up — MESA creates or updates the customer's record in Shopify. Your ecommerce and physical sales channels share a single view of every customer.
Keep inventory accurate across Square and Shopify
When a sale is made in Square, MESA updates the corresponding stock level in Shopify. Your online storefront reflects what was just sold in person without a manual sync between your point-of-sale and your store.
Trigger post-purchase workflows from Square transactions
When a customer buys in Square, MESA kicks off the right next step in Shopify — adding a tag, enrolling them in a Klaviyo flow, updating a loyalty record. Your in-person sales feed the same automation as your online ones.
Build any Slack and Square automation
MESA helps you connect apps to automate repetitive tasks. A trigger is an event that starts a workflow, and actions are the steps that occur when it's running.
Catalog Item Created
Starts when a catalog item is created.
Type
ID
Updated At
Version
Is Deleted
Custom Attribute Values
Catalog V1 Ids
Present At All Locations
Present At Location Ids
Absent At Location Ids
Item Data
Category Data
Item Variation Data
Tax Data
Discount Data
Modifier List Data
Modifier Data
Time Period Data
Product Set Data
Pricing Rule Data
Image Data
Subscription Plan Data
Item Option Data
Item Option Value Data
Custom Attribute Definition Data
Subscription Plan Variation Data
Catalog Item Updated
Starts when a catalog item is updated.
Type
ID
Updated At
Version
Is Deleted
Custom Attribute Values
Catalog V1 Ids
Present At All Locations
Present At Location Ids
Absent At Location Ids
Item Data
Category Data
Item Variation Data
Tax Data
Discount Data
Modifier List Data
Modifier Data
Time Period Data
Product Set Data
Pricing Rule Data
Image Data
Subscription Plan Data
Item Option Data
Item Option Value Data
Custom Attribute Definition Data
Subscription Plan Variation Data
Customer Created
Starts when a customer is created.
ID
Created At
Updated At
Given Name
Family Name
Nickname
Company Name
Email Address
Address
Phone Number
Birthday
Reference ID
Note
Preferences
Creation Source
Group Ids
Segment Ids
Version
Tax Ids
Customer Updated
Starts when a customer is updated.
ID
Created At
Updated At
Given Name
Family Name
Nickname
Company Name
Email Address
Address
Phone Number
Birthday
Reference ID
Note
Preferences
Creation Source
Group Ids
Segment Ids
Version
Tax Ids
Invoice Added
Starts when an invoice is added.
ID
Version
Location ID
Order ID
Primary Recipient
Payment Requests
Delivery Method
Invoice Number
Title
Description
Scheduled At
Public URL
Next Payment Amount Money
Status
Timezone
Created At
Updated At
Accepted Payment Methods
Custom Fields
Subscription ID
Sale Or Service Date
Payment Conditions
Store Payment Method Enabled
Attachments
Creator Team Member ID
Order Created
Starts when an order is created.
ID
Location ID
Reference ID
Source
Line Items
Taxes
Discounts
Service Charges
Fulfillments
Created At
Updated At
Closed At
State
Total Money
Total Tax Money
Total Discount Money
Total Tip Money
Total Service Charge Money
Pricing Options
Net Amount Due Money
Order Updated
Starts when an order is updated.
ID
Location ID
Reference ID
Source
Line Items
Taxes
Discounts
Service Charges
Fulfillments
Created At
Updated At
Closed At
State
Total Money
Total Tax Money
Total Discount Money
Total Tip Money
Total Service Charge Money
Pricing Options
Net Amount Due Money
Payment Created
Starts when a payment is created.
ID
Created At
Updated At
Amount Money
Tip Money
Total Money
App Fee Money
Approved Money
Processing Fee
Refunded Money
Status
Delay Duration
Delay Action
Delayed Until
Source Type
Card Details
Cash Details
Bank Account Details
External Details
Wallet Details
Buy Now Pay Later Details
Square Account Details
Location ID
Order ID
Reference ID
Customer ID
Team Member ID
Refund Ids
Buyer Email Address
Billing Address
Shipping Address
Note
Statement Description Identifier
Capabilities
Receipt Number
Receipt URL
Device Details
Application Details
Is Offline Payment
Offline Payment Details
Version Token
Payment Updated
Starts when a payment is updated.
ID
Created At
Updated At
Amount Money
Tip Money
Total Money
App Fee Money
Approved Money
Processing Fee
Refunded Money
Status
Delay Duration
Delay Action
Delayed Until
Source Type
Card Details
Cash Details
Bank Account Details
External Details
Wallet Details
Buy Now Pay Later Details
Square Account Details
Location ID
Order ID
Reference ID
Customer ID
Team Member ID
Refund Ids
Buyer Email Address
Billing Address
Shipping Address
Note
Statement Description Identifier
Capabilities
Receipt Number
Receipt URL
Device Details
Application Details
Is Offline Payment
Offline Payment Details
Version Token
Payout Created
Starts when a payout from the default location (associated with the seller) is created.
ID
Status
Location ID
Created At
Updated At
Amount Money
Destination
Version
Type
Payout Fee
Arrival Date
End To End ID
Refund Created
Starts when a refund is created.
ID
Location ID
Transaction ID
Tender ID
Created At
Reason
Amount Money
Status
Processing Fee Money
Refund Updated
Starts when a refund is updated.
ID
Location ID
Transaction ID
Tender ID
Created At
Reason
Amount Money
Status
Processing Fee Money
Channel Archived
Starts when a channel is archived.
Type
Channel
User
Is Moved
Event Ts
Channel Created
Starts when a channel is created.
ID
Name
Is Channel
Is Group
Is Im
Is Mpim
Is Private
Created
Is Archived
Is General
Unlinked
Name Normalized
Is Shared
Is Org Shared
Is Pending Ext Shared
Pending Shared
Context Team ID
Updated
Parent Conversation
Creator
Is Ext Shared
Shared Team Ids
Pending Connected Team Ids
Is Member
Last Read
Topic
Purpose
Previous Names
Priority
Success
Channel Deleted
Starts when a channel is deleted.
Type
Channel
Actor ID
Event Ts
Channel Renamed
Starts when a channel is renamed.
Type
Channel
Private Channel Received Message
Starts when a message is sent in a private channel.
Type
User
Text
Ts
Public Channel Received Message
Starts when a message is sent in a public channel.
Type
User
Text
Ts
User Joined Channel
Starts when a user joins a channel.
Subtype
User
Text
Type
Ts
Channel
Event Ts
Channel Type
Accept Dispute
Accept the loss on a dispute.
ID
Amount Money
Reason
State
Due At
Disputed Payment
Card Brand
Created At
Updated At
Brand Dispute ID
Reported At
Version
Location ID
Accumulate Loyalty Points
Add points earned from a purchase to a loyalty account.
ID
Type
Created At
Accumulate Points
Create Reward
Redeem Reward
Delete Reward
Adjust Points
Loyalty Account ID
Location ID
Source
Expire Points
Other Event
Accumulate Promotion Points
Add Group to Customer
Add a group membership to a customer.
Adjust Loyalty Points
Add points to or subtract points from a buyer's account.
Calculate Loyalty Points
Calculate the number of points a buyer can earn from a purchase.
Points
Promotion Points
Calculate Order
Enables applications to preview order pricing without creating an order.
Cancel Booking
Cancel a booking.
ID
Version
Status
Created At
Updated At
Start At
Location ID
Customer ID
Customer Note
Seller Note
Appointment Segments
Transition Time Minutes
All Day
Location Type
Creator Details
Source
Address
Cancel Payment
Cancel a payment.
ID
Created At
Updated At
Amount Money
Tip Money
Total Money
App Fee Money
Approved Money
Processing Fee
Refunded Money
Status
Delay Duration
Delay Action
Delayed Until
Source Type
Card Details
Cash Details
Bank Account Details
External Details
Wallet Details
Buy Now Pay Later Details
Square Account Details
Location ID
Order ID
Reference ID
Customer ID
Team Member ID
Refund Ids
Buyer Email Address
Billing Address
Shipping Address
Note
Statement Description Identifier
Capabilities
Receipt Number
Receipt URL
Device Details
Application Details
Is Offline Payment
Offline Payment Details
Version Token
Cancel Subscription
Cancel a subscription.
ID
Location ID
Plan Variation ID
Customer ID
Start Date
Canceled Date
Charged Through Date
Status
Tax Percentage
Invoice Ids
Price Override Money
Version
Created At
Card ID
Timezone
Phases
Cancel Terminal Checkout
Cancel a terminal checkout.
Complete Payment
Complete a payment.
Create Booking
Create a booking.
Create Break Type
Create a new break type.
Create Card
Add a card on file to an existing merchant.
Create Checkout
Create a checkout.
Create Customer
Create a new customer for the business, which can have associated cards on file.
Create Customer Card
Add a card on file to an existing customer.
Create Customer Group
Create a customer group.
Create Dispute Evidence File
Upload a file to use as evidence in a dispute challenge.
Create Dispute Evidence Text
Upload text to use as evidence for a dispute challenge.
Create Gift Card
Create a gift card.
Create Gift Card Activity
Create a gift card activity to manage the balance or state of a gift card.
Create Invoice
Create an invoice.
Create Location
Create a location.
Create Location Transaction
Create a location transaction.
Create Loyalty Account
Create a loyalty account.
Create Loyalty Rewards
Create a loyalty reward.
Reward
Idempotency Key
Create Order Shipment
Create an order shipment.
Create Payment
Create a payment.
Source ID
Idempotency Key
Amount Money
Tip Money
App Fee Money
Delay Duration
Delay Action
Autocomplete
Order ID
Customer ID
Location ID
Team Member ID
Reference ID
Verification Token
Accept Partial Authorization
Buyer Email Address
Buyer Phone Number
Billing Address
Shipping Address
Note
Statement Description Identifier
Cash Details
External Details
Customer Details
Offline Payment Details
Create Refund
Initiates a refund for a previously charged tender.
Create Shift
Create a new shift.
Create Subscription
Create a subscription.
Idempotency Key
Location ID
Plan Variation ID
Customer ID
Start Date
Canceled Date
Tax Percentage
Price Override Money
Card ID
Timezone
Phases
Create Team Member
Create a team member.
Idempotency Key
Team Member
Create Terminal Checkout
Create a terminal checkout.
Idempotency Key
Checkout
Delete Break Type
Remove a break type.
Delete Catalog Object
Remove a catalog object.
- 0
Delete Customer
Remove a customer.
Delete Customer Card
Remove a card on file from a customer.
Delete Customer Group
Remove a customer group.
Delete Dispute
Remove a specified evidence from a dispute.
Delete Group from Customer
Remove a customer from a business.
Delete Invoice
Remove an invoice.
Delete Loyalty Reward
Remove a loyalty reward.
Delete Shift
Remove a shift.
Disable Card
Disable a card, preventing any further updates or changes.
Get List of Additional Recipient Receivables
Obtain a list of additional recipient receivables.
Get List of Additional Recipient Receivables Refunds
Obtain a list of additional recipient receivables refunds.
Get List of Bank Accounts
Obtain a list of bank accounts linked to a Square account.
Get List of Cards
Obtain a list of cards owned by the account.
Get List of Catalog
Obtain a list of catalog objects.
Get List of Customer Groups
Obtain a list of customer groups.
Get List of Customer Segments
Obtain a list of customer segments.
Get List of Customers
Obtain a list of customers.
Get List of Dispute Evidence
Obtain a list of evidence associated with a dispute.
Get List of Disputes
Obtain a list of disputes.
Get List of Employee Wages
Obtain a list of employee wages.
Get List of Employees
Obtain a list of employees.
Get List of Invoices
Obtain a list of invoices.
Get List of Locations
Obtain a list of all of a seller's locations.
Get List of Loyalty Programs
Obtain a list of loyalty programs.
Get List of Merchants
Obtain a list of merchants.
Get List of Payment Refunds
Obtain a list of payment refunds.
Get List of Payments
Obtain a list of payments.
Get List of Refunds
Obtain a list of refunds.
Get List of Sites
Obtain a list of Square Online sites that belong to a seller.
Get List of Subscription Events
Obtain a list of subscription events.
Get List of Team Member Booking Profiles
Obtain a list of booking profiles for team members.
Get List of Team Member Wages
Obtain a list of team member wages.
Get List of Transactions
Obtain a list of transactions for a particular location.
Get List of Workweek Configs
Obtain a list of workweek configs instances for a business.
Link Customer to Gift Card
Link a customer to a gift card, which is also referred to as adding a card on file.
List Break Type
Get list of all break types
Pay Order
Pay for an order using one or more approved payments or settle an order with a total of 0.
Publish Invoice
Publish the specified draft invoice.
Redeem Loyalty Rewards
Redeem a loyalty reward.
Refund Payment
Refund a payment.
Register Domain
Activates a domain for us with Apple Pay on the Web and Square.
Retrieve Bank Account
Grab all details about a bank account.
Retrieve Bank Account by V1 ID
Grab all details about a bank account by V1 bank account id.
Retrieve Booking
Grab all details about a booking.
Retrieve Break Type
Grab all details about a break type.
Retrieve Card
Grab all details about a card.
Retrieve Catalog Object
Grab all details about a catalog object.
Retrieve Customer
Grab all details about a customer.
Retrieve Customer Group
Grab all details about a customer group.
Retrieve Customer Segments
Grab all details about a customer segment.
Retrieve Dispute
Grab all details about a dispute.
Retrieve Dispute Evidence
Grab all details about a dispute evidence.
Retrieve Employee
Grab all details about an employee.
Retrieve Employee Wage
Grab all details about an employee's wage.
Retrieve Gift Card
Grab all details about a gift card.
Retrieve Inventory Adjustment
Grab all details about an inventory adjustment.
Retrieve Inventory Changes
Grab all details about an inventory change.
Retrieve Inventory Count
Grab the inventory count for a given catalog.
Catalog Object ID
Catalog Object Type
State
Location ID
Quantity
Calculated At
Retrieve Inventory Physical Count
Grab the inventory physical count.
Retrieve Invoice
Grab all details about an invoice
ID
Version
Location ID
Order ID
Primary Recipient
Payment Requests
Delivery Method
Invoice Number
Title
Description
Scheduled At
Public URL
Next Payment Amount Money
Status
Timezone
Created At
Updated At
Accepted Payment Methods
Custom Fields
Subscription ID
Sale Or Service Date
Payment Conditions
Store Payment Method Enabled
Attachments
Creator Team Member ID
Retrieve Location
Grab all details about a location's details.
Retrieve Loyalty Account
Grab all details about a loyalty account.
ID
Program ID
Balance
Lifetime Points
Customer ID
Enrolled At
Created At
Updated At
Mapping
Expiring Point Deadlines
Retrieve Loyalty Reward
Grab all details about a loyalty reward.
ID
Status
Loyalty Account ID
Reward Tier ID
Points
Order ID
Created At
Updated At
Redeemed At
Retrieve Merchant
Grab all details about a merchant.
ID
Business Name
Country
Language Code
Currency
Status
Main Location ID
Created At
Retrieve Order
Grab all details about an order.
ID
Location ID
Reference ID
Source
Line Items
Taxes
Discounts
Service Charges
Fulfillments
Created At
Updated At
Closed At
State
Total Money
Total Tax Money
Total Discount Money
Total Tip Money
Total Service Charge Money
Pricing Options
Net Amount Due Money
Retrieve Payment
Grab all details about a payment.
ID
Created At
Updated At
Amount Money
Tip Money
Total Money
App Fee Money
Approved Money
Processing Fee
Refunded Money
Status
Delay Duration
Delay Action
Delayed Until
Source Type
Card Details
Cash Details
Bank Account Details
External Details
Wallet Details
Buy Now Pay Later Details
Square Account Details
Location ID
Order ID
Reference ID
Customer ID
Team Member ID
Refund Ids
Buyer Email Address
Billing Address
Shipping Address
Note
Statement Description Identifier
Capabilities
Receipt Number
Receipt URL
Device Details
Application Details
Is Offline Payment
Offline Payment Details
Version Token
Retrieve Payment Refund
Grab all details about a payment refund.
ID
Status
Location ID
Unlinked
Destination Type
Destination Details
Amount Money
App Fee Money
Processing Fee
Payment ID
Order ID
Reason
Created At
Updated At
Team Member ID
Retrieve Shift
Grab all details about a shift.
Retrieve Subscription
Grab all details about a subscription.
ID
Location ID
Plan Variation ID
Customer ID
Start Date
Canceled Date
Charged Through Date
Status
Tax Percentage
Invoice Ids
Price Override Money
Version
Created At
Card ID
Timezone
Phases
Retrieve Team Member
Grab all details about a team member.
ID
Reference ID
Is Owner
Status
Given Name
Family Name
Email Address
Phone Number
Created At
Updated At
Assigned Locations
Retrieve Terminal Checkout
Grab all details about a terminal checkout.
Retrieve Transaction
Grab all details about a transaction.
Retrieve Wage Setting
Grab all details about a wage setting.
Search Availability
Search availabilities for booking.
Start At
Location ID
Appointment Segments
Search Catalog
Search for a catalog.
Cursor
Objects
Related Objects
Search Customer
Search for a customer.
ID
Created At
Updated At
Given Name
Family Name
Nickname
Company Name
Email Address
Address
Phone Number
Birthday
Reference ID
Note
Preferences
Creation Source
Group Ids
Segment Ids
Version
Tax Ids
Search for Catalog Item
Search for a catalog item.
Search Invoice
Search for an invoice.
Search Loyalty Account
Search for a loyalty account.
ID
Program ID
Balance
Lifetime Points
Customer ID
Enrolled At
Created At
Updated At
Mapping
Expiring Point Deadlines
Search Loyalty Event
Search for a loyalty event.
ID
Type
Created At
Accumulate Points
Create Reward
Redeem Reward
Delete Reward
Adjust Points
Loyalty Account ID
Location ID
Source
Expire Points
Other Event
Accumulate Promotion Points
Search Loyalty Rewards
Search for a loyalty reward.
ID
Status
Loyalty Account ID
Reward Tier ID
Points
Order ID
Created At
Updated At
Redeemed At
Search Shifts
Search for a shift.
Search Subscription
Search for a subscription.
Search Team Members
Search for a team member.
ID
Reference ID
Is Owner
Status
Given Name
Family Name
Email Address
Phone Number
Created At
Updated At
Assigned Locations
Search Terminal Checkout
Search for a terminal checkout.
Searchorders /V2/Orders/Search
SearchOrders
Submit Evidence
Submit evidence to the cardholder's bank.
ID
Amount Money
Reason
State
Due At
Disputed Payment
Card Brand
Created At
Updated At
Brand Dispute ID
Reported At
Version
Location ID
Update Booking
Modify a booking's details.
Idempotency Key
Booking
Update Break Type
Modify a break type's details.
- Break Type
Update Customer
Modify a customer's details.
Given Name
Family Name
Company Name
Nickname
Email Address
Address
Phone Number
Reference ID
Note
Birthday
Version
Tax Ids
Update Customer Group
Modify a customer group.
Update Inventory
Modify inventory for an item.
Idempotency Key
Changes
Ignore Unchanged Counts
Update Invoice
Modify an invoice's details.
Invoice
Idempotency Key
Fields To Clear
Update Item Modifier Lists
Modify a catalog modifier list object that apply to the targeted catalog item.
Update Item Taxes
Modify a catalog tax object that apply to the targeted catalog item.
Update Location
Modify a location's details.
Update Order Fulfillment
Modify an order fulfillment's details.
Update Shift
Modify a shift's details.
Update Subscription
Modify a subscription's details.
- Subscription
Update Team Member
Modify a team member's details.
- Team Member
Update Wage Setting
Modify a wage setting's details.
Update Workweek Config
Modify a workweek's config details.
Void Transaction
Cancel a transaction.
Add Emoji Reaction
Add an emoji reaction to a message.
Success
Data
Archive Channel
Archive a channel.
Success
Data
Create Channel
Create a channel.
Name
Is Private
Create Reminder
Create a reminder.
Text
Timestamp
Team ID
User
Delete Message
Remove a message.
Channel
Ts
Success
Find User by Email
Find a user by an email address.
ID
Team ID
Name
Deleted
Color
Real Name
Tz
Tz Label
Tz Offset
Profile
Is Admin
Is Owner
Is Primary Owner
Is Restricted
Is Ultra Restricted
Is Bot
Updated
Is App User
Has 2fa
Get List of Channel's Messages
Obtain a list of a channel's messages.
Type
User
Text
Ts
Thread Ts
Team
Subtype
Bot Link
Bot ID
Get List of Channels
Obtain a list of channels.
ID
Name
Is Channel
Is Group
Is Im
Created
Creator
Is Archived
Is General
Unlinked
Name Normalized
Is Shared
Is Ext Shared
Is Org Shared
Pending Shared
Is Pending Ext Shared
Is Member
Is Private
Is Mpim
Updated
Topic
Purpose
Previous Names
Num Members
Get List of Members in Channel
Obtain a list of members in a channel.
- 0
Get List of Team's Users
Obtain a list of users in a team.
ID
Team ID
Name
Deleted
Color
Real Name
Tz
Tz Label
Tz Offset
Profile
Is Admin
Is Owner
Is Primary Owner
Is Restricted
Is Ultra Restricted
Is Bot
Updated
Is App User
Has 2fa
Get List of Thread's Replies
Obtain a list of replies from a specific thread.
Type
User
Text
Ts
Thread Ts
Team
Subtype
Bot Link
Bot ID
Invite User to Channel
Invite a user to a channel.
ID
Name
Is Channel
Is Group
Is Im
Created
Creator
Is Archived
Is General
Unlinked
Name Normalized
Is Read Only
Is Shared
Is Ext Shared
Is Org Shared
Pending Shared
Is Pending Ext Shared
Is Member
Is Private
Is Mpim
Last Read
Topic
Purpose
Previous Names
Kick User from Channel
Remove a user from a channel.
Success
Data
Send Message
Post a new message to a specific channel.
Channel
Ts
Success
Set Conversation Topic
Set a topic for a conversation.
ID
Name
Is Channel
Is Group
Is Im
Is Mpim
Is Private
Created
Is Archived
Is General
Unlinked
Name Normalized
Is Shared
Is Frozen
Is Org Shared
Is Pending Ext Shared
Pending Shared
Parent Conversation
Creator
Is Ext Shared
Shared Team Ids
Pending Connected Team Ids
Is Member
Last Read
Latest
Unread Count
Unread Count Display
Topic
Purpose
Previous Names
Update Message
Modify a message.
Channel
Message
Timestamp
Not just software—partnership
Expert support included
MESA includes hands-on support from automation experts who know how to get things done.
Free workflow setup
We'll build your first workflow with you live. Most merchants walk away with automation saving 5+ hours/week.
Fast response times
Average first response: Same day. Critical issues: Immediate escalation. Complex builds: 24-48 hours.
Managed services available
Personalized workflow reviews, and quarterly check-ins to identify new opportunities as your business grows.
Real humans, always
Chat with real automation experts (not bots). Email support 9am-5pm PST. Google Meet sessions for complex workflows.
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