---
title: "Customers 1st API"
account: c1st
slug: customers-1st-api
---

# Customers 1st API

Retail store management: customers, sales orders, gift cards, stock transactions, tickets and POS payments

- Operations: 263
- Versions: 1 (latest `4250bb326f2a`)
- Source: https://api-docs.c1st.com/spec.json
- OpenAPI document: https://skmtc.dev/c1st/apis/customers-1st-api/revisions/4250bb326f2a?raw

## Operations

263 in total, by tag:

- Billing (1)
- Bundle - Experimental (5)
- BundleFilter - Experimental (4)
- CustomerArticles (8)
- CustomerTags (5)
- Customers (5)
- CustomFields (2)
- DiscountTags (4)
- ExchangeRate (5)
- Finance (1)
- GiftCards (5)
- RestHooksLog (1)
- RestHooks (6)
- Inventory levels (2)
- Loyalty (4)
- Notifications (6)
- PartnerInventory (1)
- PartnerPermissions (1)
- PaymentTypes (5)
- PaymentTypeRelations (4)
- POSBalances (1)
- POSPayments (5)
- Cart (5)
- pospaymentmaterialreturntag (1)
- POSRegisters (5)
- ProductImage (3)
- Products (12)
- ProductAddon (2)
- ProductMasterData (3)
- ProductTags (5)
- Promotions (6)
- RecurringPayment - Experimental (7)
- SalesOrderFulfillmentMaterials (4)
- SalesOrderFullfillments (5)
- SalesOrdersMaterials (6)
- SalesOrders (5)
- ServicePlan (4)
- ServiceSubscription (5)
- Settings (6)
- ShoppingLists (7)
- ShoppingListOrders (7)
- StockTransactions (5)
- StockTransactionLists (8)
- StockTransactionTags (4)
- Suppliers (5)
- TicketComments (5)
- TicketFiles (3)
- TicketMaterials (5)
- TicketTags (4)
- Tickets (8)
- ServiceNotifications (2)
- TicketTemplate (15)
- TicketTemplateRelation (4)
- Users (5)
- VerifiedSupplier - Experimental (10)
- VerifiedSupplier (1)

Every operation, with a link to its markdown: https://skmtc.dev/c1st/apis/customers-1st-api/llms.txt