> For the complete documentation index, see [llms.txt](https://onestore-dev.gitbook.io/dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://onestore-dev.gitbook.io/dev/eng/tools.md).

# Development Tools

- [Payment Integration Guide](https://onestore-dev.gitbook.io/dev/eng/tools/billing.md)
- [ONE store IAP API V7 (SDK V21) Guide](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21.md)
- [Overview](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/ov.md)
- [Pre-Preparations](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/pre.md)
- [Test Purchases and Security](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/test.md)
- [Implementing ONE store IAP SDK](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/sdk.md)
- [ONE store IAP References](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references.md)
- [Annotations](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations.md)
- [PurchaseClient.ConnectionState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.connectionstate.md)
- [PurchaseClient.FeatureType](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.featuretype.md)
- [PurchaseClient.ProductType](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.producttype.md)
- [PurchaseClient.RecurringAction](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.recurringaction.md)
- [PurchaseClient.ResponseCode](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseclient.responsecode.md)
- [PurchaseData.AcknowledgeState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchasedata.acknowledgestate.md)
- [PurchaseData.PurchaseState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchasedata.purchasestate.md)
- [PurchaseData.RecurringState](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchasedata.recurringstate.md)
- [PurchaseFlowParams.ProrationMode](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/annptations/purchaseflowparams.prorationmode.md)
- [Classes](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes.md)
- [AcknowledgeParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/acknowledgeparams.md)
- [AcknowledgeParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/acknowledgeparams.builder.md)
- [ConsumeParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/consumeparams.md)
- [ConsumeParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/consumeparams.builder.md)
- [IapResult](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/iapresult.md)
- [IapResult.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/iapresult.builder.md)
- [ProductDetail](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/productdetail.md)
- [ProductDetailsParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/productdetailsparams.md)
- [ProductDetailsParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/productdetailsparams.builder.md)
- [PurchaseClient](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/purchaseclient.md)
- [PurchaseClient.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/purchaseclient.builder.md)
- [PurchaseData](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/purchasedata.md)
- [PurchaseFlowParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/purchaseflowparams.md)
- [PurchaseFlowParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/purchaseflowparams.builder.md)
- [RecurringProductParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/recurringproductparams.md)
- [RecurringProductParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/recurringproductparams.builder.md)
- [SubscriptionParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/subscriptionparams.md)
- [SubscriptionParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/subscriptionparams.builder.md)
- [SubscriptionUpdateParams](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/subscriptionupdateparams.md)
- [SubscriptionUpdateParams.Builder](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/classes/subscriptionupdateparams.builder.md)
- [Interfaces](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces.md)
- [AcknowledgeListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/acknowledgelistener.md)
- [ConsumeListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/consumelistener.md)
- [IapResultListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/iapresultlistener.md)
- [ProductDetailsListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/productdetailslistener.md)
- [PurchaseClientStateListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/purchaseclientstatelistener.md)
- [PurchasesListener (deprecated)](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/purchaseslistener-deprecated.md)
- [PurchasesUpdatedListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/purchasesupdatedlistener.md)
- [QueryPurchasesListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/querypurchaseslistener.md)
- [RecurringProductListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/recurringproductlistener.md)
- [StoreInfoListener](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/references/interfaces/storeinfolistener.md)
- [ONE store IAP Server API (API V7)](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/serverapi.md)
- [Using PNS (Push Notification Service)](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/pns.md)
- [Subscriptions](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/subs.md)
- [ONE store IAP Release Notes](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/releasenote.md)
- [Developer Tools](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/sample.md)
- [Upgrading ONE store IAP to V21](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/upgrade.md)
- [Using ONE store IAP (SDK V21) from Unity](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/unity.md)
- [Migrating from v1.1.x to v1.2.0](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/unity/mig.md)
- [Upgrading to IAP SDK V21 from Unity](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/unitymig.md)
- [Using the ONE Store In-App Library in Flutter](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/flutter.md)
- [Using In-App Purchases on the Web](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/web-payment.md)
- [Membership Authentication](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/web-payment/member.md)
- [Using In-App Purchases on the Web](https://onestore-dev.gitbook.io/dev/eng/tools/billing/v21/web-payment/uiapw.md)
- [Billing\_3rd party](https://onestore-dev.gitbook.io/dev/eng/tools/billing/billing_3rd-party.md)
- [(OLD Version) ONE store IAP Guide](https://onestore-dev.gitbook.io/dev/eng/tools/billing/old-version.md)
- [Billing\_3rd party](https://onestore-dev.gitbook.io/dev/eng/tools/billing/old-version/billing_3rd-party.md)
- [Webshop Integration Guide](https://onestore-dev.gitbook.io/dev/eng/tools/webshop.md)
- [User Information Integration](https://onestore-dev.gitbook.io/dev/eng/tools/webshop/app-links.md)
- [Server List Integration](https://onestore-dev.gitbook.io/dev/eng/tools/webshop/server.md)
- [User Validation](https://onestore-dev.gitbook.io/dev/eng/tools/webshop/validation.md)
- [Webshop Payment Integration](https://onestore-dev.gitbook.io/dev/eng/tools/webshop/billing.md)
- [App Links Developer Guide](https://onestore-dev.gitbook.io/dev/eng/tools/app-links.md)
- [Reference](https://onestore-dev.gitbook.io/dev/eng/tools/app-links/reference.md)
- [ALC Developer Guide](https://onestore-dev.gitbook.io/dev/eng/tools/alc.md)
- [Add ALC library dependency](https://onestore-dev.gitbook.io/dev/eng/tools/alc/add-alc-library-dependency.md)
- [ALC V2 Reference](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference.md)
- [Annotation](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference/annotation.md)
- [V2 AppLicenseChecker.ResponseCode](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference/annotation/v2-applicensechecker.responsecode.md)
- [Classes\_](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference/classes_.md)
- [V2 AppLicenseChecker](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference/classes_/v2-applicensechecker.md)
- [Interfaces\_](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference/interfaces_.md)
- [V2 LicenseCheckerListener](https://onestore-dev.gitbook.io/dev/eng/tools/alc/alc-v2-reference/interfaces_/v2-licensecheckerlistener.md)
- [Upgrading from Unity to ALC SDK v2](https://onestore-dev.gitbook.io/dev/eng/tools/alc/upgrading-from-unity-to-alc-sdk-v2.md)
- [Upgrading from V1 to V2](https://onestore-dev.gitbook.io/dev/eng/tools/alc/upgrading-from-v1-to-v2.md)
- [Using ALC SDK V2 in Unity](https://onestore-dev.gitbook.io/dev/eng/tools/alc/using-alc-sdk-v2-in-unity.md)
- [In-app Ads Monetization Guide](https://onestore-dev.gitbook.io/dev/eng/tools/one-admax.md)
- [ONE Billing Lab Guide](https://onestore-dev.gitbook.io/dev/eng/tools/one-billing-lab.md)
- [ONE store Developer Center App (Android)](https://onestore-dev.gitbook.io/dev/eng/tools/devcenter_app.md)
- [Guide to Linking Play Games Services](https://onestore-dev.gitbook.io/dev/eng/tools/play.md)
- [Image Production Guidelines](https://onestore-dev.gitbook.io/dev/eng/tools/icon-guide.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://onestore-dev.gitbook.io/dev/eng/tools.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.