> ## Documentation Index > Fetch the complete documentation index at: https://docs.stigg.io/llms.txt > Use this file to discover all available pages before exploring further. # Get a list of contracts > Retrieves a customer's contracts, fetched live from the connected billing provider, each enriched with a preview of its upcoming (next) invoice when available. Returns an empty list when no billing provider is connected or the customer is not synced. ## OpenAPI ````yaml https://app.stainless.com/api/spec/documented/stigg/openapi.documented.yml get /api/v1/customers/{id}/contracts openapi: 3.0.0 info: title: Stigg API description: Stigg API documentation version: 7.129.2 contact: {} servers: - url: https://api.stigg.io description: Production security: - ApiKeyAuth: [] tags: - name: Customers description: Operations related to customers - name: Subscriptions description: Operations related to subscriptions - name: Coupons description: Operations related to coupons - name: Bulk Import description: Operations related to import of customers and subscriptions - name: Usage description: Operations related to usage & metering - name: Promotional Entitlements description: Operations related to promotional entitlements - name: Products description: Operations related to products - name: Features description: Operations related to features - name: Addons description: Operations related to addons - name: Plans description: Operations related to plans - name: Credit grants description: Operations related to credit grants - name: Credit ledger description: Operations related to credit ledger - name: Custom currencies description: Operations related to custom currencies paths: /api/v1/customers/{id}/contracts: get: tags: - Contracts summary: Get a list of contracts description: >- Retrieves a customer's contracts, fetched live from the connected billing provider, each enriched with a preview of its upcoming (next) invoice when available. Returns an empty list when no billing provider is connected or the customer is not synced. operationId: CustomerContractsController_getCustomerContracts parameters: - name: id required: true in: path description: The external identifier of the customer the contract belongs to schema: minLength: 1 maxLength: 255 pattern: ^[a-zA-Z0-9][a-zA-Z0-9_|.@-]*$ type: string - name: X-ACCOUNT-ID in: header description: >- Account ID — optional when authenticating with a user JWT (Bearer token); falls back to the user's first membership. Ignored for API-key auth. required: false schema: type: string - name: X-ENVIRONMENT-ID in: header description: >- Environment ID — required when authenticating with a user JWT (Bearer token) on environment-scoped endpoints. Ignored for API-key auth (env is intrinsic to the key). required: false schema: type: string responses: '200': description: >- The customer's contracts, each with its next-invoice preview when available. content: application/json: schema: $ref: '#/components/schemas/CustomerContractsListResponseDto' examples: default: value: data: - contractId: contract-acme-2026 billingId: ct_1a2b3c4d id: 3452155b-deca-4d7f-91e5-82d486dc8bb0 refId: contract-acme-2026 poNumber: PO-4821 externalId: contract-acme-2026 customerExternalId: customer-acme name: PO-4821 state: ACTIVE activationStartDate: '2026-01-01T00:00:00.000Z' activationEndDate: '2026-12-31T00:00:00.000Z' createdAt: '2025-12-15T09:30:00.000Z' nextInvoice: amount: amount: 4900 currency: usd dueDate: '2026-08-01T00:00:00.000Z' periodStart: '2026-07-01T00:00:00.000Z' periodEnd: '2026-08-01T00:00:00.000Z' latestInvoice: billingId: inv_abc123 status: OPEN createdAt: '2026-07-01T00:00:00.000Z' total: 4900 amountDue: 4900 currency: usd pdfUrl: null requiresAction: false billingReason: null subscriptions: - subscriptionId: subscription-acme-platform planDisplayName: Enterprise Platform productDisplayName: Revvenu '400': description: bad request. content: application/json: schema: $ref: '#/components/schemas/BadInputErrorResponseDto' '401': description: User is not authenticated. content: application/json: schema: $ref: '#/components/schemas/UnauthenticatedErrorResponseDto' '403': description: User is not allowed to access this resource. content: application/json: schema: $ref: '#/components/schemas/ForbiddenErrorResponseDto' '429': description: Too many requests. content: application/json: schema: $ref: '#/components/schemas/TooManyRequestsErrorResponseDto' x-codeSamples: - lang: JavaScript source: |- import Stigg from '@stigg/typescript'; const client = new Stigg({ apiKey: process.env['STIGG_API_KEY'], // This is the default and can be omitted }); const response = await client.v1.customers.listContracts('id'); console.log(response.data); - lang: Python source: |- import os from stigg import Stigg client = Stigg( api_key=os.environ.get("STIGG_API_KEY"), # This is the default and can be omitted ) response = client.v1.customers.list_contracts( id="id", ) print(response.data) - lang: Go source: "package main\n\nimport (\n\t\"context\"\n\t\"fmt\"\n\n\t\"github.com/stiggio/stigg-go\"\n\t\"github.com/stiggio/stigg-go/option\"\n)\n\nfunc main() {\n\tclient := stigg.NewClient(\n\t\toption.WithAPIKey(\"My API Key\"),\n\t)\n\tresponse, err := client.V1.Customers.ListContracts(\n\t\tcontext.TODO(),\n\t\t\"id\",\n\t\tstigg.V1CustomerListContractsParams{},\n\t)\n\tif err != nil {\n\t\tpanic(err.Error())\n\t}\n\tfmt.Printf(\"%+v\\n\", response.Data)\n}\n" - lang: Java source: |- package io.stigg.example; import io.stigg.client.StiggClient; import io.stigg.client.okhttp.StiggOkHttpClient; import io.stigg.models.v1.customers.CustomerListContractsParams; import io.stigg.models.v1.customers.CustomerListContractsResponse; public final class Main { private Main() {} public static void main(String[] args) { StiggClient client = StiggOkHttpClient.fromEnv(); CustomerListContractsResponse response = client.v1().customers().listContracts("id"); } } - lang: Ruby source: |- require "stigg" stigg = Stigg::Client.new(api_key: "My API Key") response = stigg.v1.customers.list_contracts("id") puts(response) - lang: C# source: |- using System; using Stigg.Client; using Stigg.Client.Models.V1.Customers; StiggClient client = new(); CustomerListContractsParams parameters = new() { ID = "id" }; var response = await client.V1.Customers.ListContracts(parameters); Console.WriteLine(response); - lang: CLI source: |- stigg v1:customers list-contracts \ --api-key 'My API Key' \ --id id components: schemas: CustomerContractsListResponseDto: type: object properties: data: type: array items: type: object properties: contractId: type: string maxLength: 255 description: >- The Stigg contract ref ID (the key used to fetch/update/delete this contract) billingId: type: string maxLength: 255 description: >- The billing provider (Received) contract ID; null until the contract has synced to the billing provider nullable: true id: type: string maxLength: 255 description: >- The persisted Stigg contract id (matches a subscription’s contractId; present for Stigg-managed contracts) nullable: true refId: type: string maxLength: 255 description: >- The Stigg contract ref ID (present for Stigg-managed contracts; the key used to update/delete) nullable: true poNumber: type: string maxLength: 255 description: Purchase-order number, when set on the contract nullable: true externalId: type: string maxLength: 255 description: The external identifier of the contract customerExternalId: type: string maxLength: 255 description: >- The external identifier of the customer the contract belongs to nullable: true name: type: string maxLength: 255 description: >- The contract name (the purchase-order number when set, otherwise the contract/customer name) nullable: true state: type: string enum: - DRAFT - ACTIVE - CANCELED - END_BILLING description: The current state of the contract activationStartDate: type: string format: date-time description: The date the contract becomes active nullable: true activationEndDate: type: string format: date-time description: The date the contract activation ends nullable: true createdAt: type: string format: date-time description: The date the contract was created nullable: true nextInvoice: type: object properties: amount: type: object properties: amount: type: number description: The price amount currency: description: ISO 4217 currency code type: string enum: - usd - aed - all - amd - ang - aud - awg - azn - bam - bbd - bdt - bgn - bif - bmd - bnd - bsd - bwp - byn - bzd - brl - cad - cdf - chf - cny - czk - dkk - dop - dzd - egp - etb - eur - fjd - gbp - gel - gip - gmd - gyd - hkd - hrk - htg - idr - ils - inr - isk - jmd - jpy - kes - kgs - khr - kmf - krw - kyd - kzt - lbp - lkr - lrd - lsl - mad - mdl - mga - mkd - mmk - mnt - mop - mro - mvr - mwk - mxn - myr - mzn - nad - ngn - nok - npr - nzd - pgk - php - pkr - pln - qar - ron - rsd - rub - rwf - sar - sbd - scr - sek - sgd - sle - sll - sos - szl - thb - tjs - top - try - ttd - tzs - uah - uzs - vnd - vuv - wst - xaf - xcd - yer - zar - zmw - clp - djf - gnf - ugx - pyg - xof - xpf title: Currency required: - amount - currency description: The total amount of the upcoming invoice dueDate: type: string format: date-time description: The date the upcoming invoice is due nullable: true periodStart: type: string format: date-time description: >- The start of the billing period the upcoming invoice covers nullable: true periodEnd: type: string format: date-time description: The end of the billing period the upcoming invoice covers nullable: true required: - amount - dueDate - periodStart - periodEnd title: ContractNextInvoice description: >- A preview of the contract's upcoming invoice, or null when none is available nullable: true latestInvoice: type: object properties: billingId: type: string maxLength: 255 description: Invoice billing ID status: type: string enum: - OPEN - CANCELED - PAID description: Invoice status createdAt: type: string format: date-time description: Invoice creation date total: type: number description: Total amount nullable: true amountDue: type: number description: Amount due nullable: true currency: type: string maxLength: 255 description: Invoice currency nullable: true pdfUrl: type: string maxLength: 255 description: Invoice PDF URL nullable: true requiresAction: type: boolean description: Whether payment requires action billingReason: type: string enum: - BILLING_CYCLE - SUBSCRIPTION_CREATION - SUBSCRIPTION_UPDATE - MANUAL - MINIMUM_INVOICE_AMOUNT_EXCEEDED - OTHER nullable: true description: Billing reason required: - billingId - status - createdAt - requiresAction title: LatestInvoice description: >- The most recent non-draft invoice for this contract (open, paid, or canceled), or null when none exists nullable: true subscriptions: type: array items: type: object properties: subscriptionId: type: string maxLength: 255 description: >- The subscription ref ID (use it to deep-link to the subscription) planDisplayName: type: string maxLength: 255 description: Display name of the subscription plan nullable: true productDisplayName: type: string maxLength: 255 description: >- Display name of the product the subscription plan belongs to nullable: true required: - subscriptionId - planDisplayName - productDisplayName title: ContractSubscriptionRef description: A custom subscription attached to a contract. description: >- The custom subscriptions attached to this contract (empty when none) required: - contractId - billingId - id - refId - poNumber - externalId - customerExternalId - name - state - activationStartDate - activationEndDate - createdAt - nextInvoice - latestInvoice - subscriptions title: Contract description: A billing contract as reported by the connected billing provider. required: - data title: CustomerContractsListResponse description: A list of a customer's contracts BadInputErrorResponseDto: type: object properties: message: type: string code: type: string enum: - BadUserInput - DuplicateIntegrationNotAllowed - EntityIsArchivedError - IntegrityViolation - FreePlanCantHaveCompatiblePackageGroupError - SubscriptionMustHaveSinglePlanError - AddonIsCompatibleWithPlan - AddonIsCompatibleWithGroup - DuplicateAddonProvisionedError - ScheduledMigrationAlreadyExistsError - SubscriptionAlreadyOnLatestPlan - EntityIdDifferentFromRefIdError - UnsupportedFeatureType - UnsupportedVendorIdentifier - UnsupportedSubscriptionScheduleType - InvalidEntitlementResetPeriod - IncompatibleSubscriptionAddon - UnPublishedPackage - MeteringNotAvailableForFeatureType - AuthCustomerMismatch - AuthCustomerReadonly - FetchAllCountriesPricesNotAllowed - MemberInvitationError - PlansCircularDependencyError - NoFeatureEntitlementInSubscription - CheckoutIsNotSupported - UnsupportedParameter - PricingModelNotSupportedByBillingIntegration - BillingIntegrationMissing - BillingIntegrationAlreadyExistsError - InvalidMemberDelete - PackageAlreadyPublished - DraftPlanCantBeArchived - DraftAddonCantBeArchived - PlanWithChildCantBeDeleted - PlanCannotBePublishWhenBasePlanIsDraft - PlanCannotBePublishWhenCompatibleAddonIsDraft - PlanIsUsedAsDefaultStartPlan - PlanIsUsedAsDowngradePlan - InvalidAddressError - InvalidQuantity - BillingPeriodMissingError - DowngradeBillingPeriodNotSupportedError - CustomerAlreadyUsesCouponError - CustomerAlreadyHaveCustomerCoupon - SubscriptionAlreadyCanceledOrExpired - TrialMustBeCancelledImmediately - SubscriptionDoesNotHaveBillingPeriod - InvalidCancellationDate - FailedToImportCustomer - FailedToImportSubscriptions - PackagePricingTypeNotSet - InvalidSubscriptionStatus - InvalidArgumentError - EditAllowedOnDraftPackageOnlyError - ResyncAlreadyInProgress - ArchivedCouponCantBeApplied - ImportAlreadyInProgress - AddonHasToHavePriceError - SelectedBillingModelDoesntMatchImportedItemError - CannotArchiveProductError - CannotUnarchiveProductError - CannotDeleteCustomerError - CannotRemovePaymentMethodFromCustomerError - CannotDeleteFeatureError - CannotArchiveFeatureError - InvalidUpdatePriceUnitAmountError - ExperimentAlreadyRunning - ExperimentStatusError - OperationNotAllowedDuringInProgressExperiment - EntitlementsMustBelongToSamePackage - CanNotUpdateEntitlementsFeatureGroup - MeterMustBeAssociatedToMeteredFeature - CannotEditPackageInNonDraftMode - CannotAddOverrideEntitlementToPlan - MissingEntityIdError - NoProductsAvailable - PromotionCodeNotForCustomer - PromotionCodeNotActive - PromotionCodeMaxRedemptionsReached - PromotionCodeMinimumAmountNotReached - PromotionCodeCustomerNotFirstPurchase - AddonWithDraftCannotBeDeletedError - CannotReportUsageForEntitlementWithMeterError - RecalculateEntitlementsError - ImportSubscriptionsBulkError - InvalidMetadataError - CannotUpsertToPackageThatHasDraft - IntegrationValidationError - AwsMarketplaceIntegrationValidationError - AwsMarketplaceIntegrationError - DataExportIntegrationError - HubspotIntegrationError - DuplicateProductValidationError - AmountTooLarge - CustomerHasNoEmailAddress - MergeEnvironmentValidationError - EntitlementLimitExceededError - EntitlementUsageOutOfRangeError - UsageMeasurementDiffOutOfRangeError - AddonQuantityExceedsLimitError - AddonDependencyMissingError - PackageGroupMinItemsError - CannotUpdateUnitTransformationError - SingleSubscriptionCantBeAutoCancellationTargetError - MultiSubscriptionCantBeAutoCancellationSourceError - ChangingPayingCustomerIsNotSupportedError - RequiredSsoAuthenticationError - InvalidDoggoSignatureError - InvalidReceivedSignatureError - CannotDeleteDefaultIntegration - CannotChangeBillingIntegration - FailedToResolveBillingIntegration - WorkflowTriggerNotFound - DeprecatedEstimateSubscriptionError - FeatureConfigurationExceededLimitError - FeatureNotBelongToFeatureGroupError - FeatureGroupMissingFeaturesError - VersionExceedsMaxValueError - CannotUpdateExpireAtForExpiredCreditGrantError - ExpireAtMustBeLaterThanEffectiveAtError - OfferAlreadyExists - DraftAlreadyExists - CreditGrantAlreadyVoided - CreditGrantCannotBeVoided - InvalidTaxId - ObjectAlreadyBeingUsedByAnotherRequestError - TooManySubscriptionsPerCustomer - TooManyCustomCurrencies - StripeError - SchedulingAtEndOfBillingPeriod - ApiKeyExpired - ApiKeyHasExpiry - OveragePriceNotSupportedOnAddon - OveragePriceRequiresUsageLimit - InvalidCreditOverageBillingModel - CreditOveragePriceCurrencyNotFound - InvoicePreviewNotAvailableForDraftContract nullable: true required: - message - code UnauthenticatedErrorResponseDto: type: object properties: message: type: string code: type: string enum: - Unauthenticated nullable: true required: - message - code ForbiddenErrorResponseDto: type: object properties: message: type: string code: type: string enum: - IdentityForbidden - AccessDeniedError - NoFeatureEntitlementError - GovernanceNotEnabled nullable: true required: - message - code TooManyRequestsErrorResponseDto: type: object properties: message: type: string code: type: string enum: - RateLimitExceeded nullable: true required: - message - code securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-KEY description: Server API Key ````