diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 842d1edb2..2f62033bd 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.396.0"
+  ".": "0.397.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 4b965774e..55843fe6f 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 232
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-a559a6a1a1f3781fad8db5bcb96c40b69a78b952d659395840accce782098e0c.yml
 openapi_spec_hash: 2ae62041468e5cf6fe653d65b1b7a58a
-config_hash: 8a9bb9e2d5dd0ccc3e78ad59f924fd3c
+config_hash: 3ccb2793be25ae0b15e05dc9ef5da09c
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 887ad68e4..2a541be33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.397.0 (2026-01-16)
+
+Full Changelog: [v0.396.0...v0.397.0](https://github.com/Increase/increase-java/compare/v0.396.0...v0.397.0)
+
+### Features
+
+* **api:** api update ([d270889](https://github.com/Increase/increase-java/commit/d270889d3821b24bce29d3b74cc2b7472fbc7db1))
+
+
+### Chores
+
+* **internal:** clean up maven repo artifact script and add html documentation to repo root ([cf9cda9](https://github.com/Increase/increase-java/commit/cf9cda9e2963052c860047c6d6795ae977b52c0b))
+
 ## 0.396.0 (2026-01-14)
 
 Full Changelog: [v0.395.0...v0.396.0](https://github.com/Increase/increase-java/compare/v0.395.0...v0.396.0)
diff --git a/README.md b/README.md
index 8b57c83a4..05fc9e3e6 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 <!-- x-release-please-start-version -->
 
-[![Maven Central](https://img.shields.io/maven-central/v/com.increase.api/increase-java)](https://central.sonatype.com/artifact/com.increase.api/increase-java/0.396.0)
-[![javadoc](https://javadoc.io/badge2/com.increase.api/increase-java/0.396.0/javadoc.svg)](https://javadoc.io/doc/com.increase.api/increase-java/0.396.0)
+[![Maven Central](https://img.shields.io/maven-central/v/com.increase.api/increase-java)](https://central.sonatype.com/artifact/com.increase.api/increase-java/0.397.0)
+[![javadoc](https://javadoc.io/badge2/com.increase.api/increase-java/0.397.0/javadoc.svg)](https://javadoc.io/doc/com.increase.api/increase-java/0.397.0)
 
 <!-- x-release-please-end -->
 
@@ -13,7 +13,7 @@ The Increase Java SDK is similar to the Increase Kotlin SDK but with minor diffe
 
 <!-- x-release-please-start-version -->
 
-The REST API documentation can be found on [increase.com](https://increase.com/documentation). Javadocs are available on [javadoc.io](https://javadoc.io/doc/com.increase.api/increase-java/0.396.0).
+The REST API documentation can be found on [increase.com](https://increase.com/documentation). Javadocs are available on [javadoc.io](https://javadoc.io/doc/com.increase.api/increase-java/0.397.0).
 
 <!-- x-release-please-end -->
 
@@ -24,7 +24,7 @@ The REST API documentation can be found on [increase.com](https://increase.com/d
 ### Gradle
 
 ```kotlin
-implementation("com.increase.api:increase-java:0.396.0")
+implementation("com.increase.api:increase-java:0.397.0")
 ```
 
 ### Maven
@@ -33,7 +33,7 @@ implementation("com.increase.api:increase-java:0.396.0")
 <dependency>
   <groupId>com.increase.api</groupId>
   <artifactId>increase-java</artifactId>
-  <version>0.396.0</version>
+  <version>0.397.0</version>
 </dependency>
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 83eb758c8..e8740e0b2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,7 +8,7 @@ repositories {
 
 allprojects {
     group = "com.increase.api"
-    version = "0.396.0" // x-release-please-version
+    version = "0.397.0" // x-release-please-version
 }
 
 subprojects {
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/core/handlers/EmptyHandler.kt b/increase-java-core/src/main/kotlin/com/increase/api/core/handlers/EmptyHandler.kt
new file mode 100644
index 000000000..017902e09
--- /dev/null
+++ b/increase-java-core/src/main/kotlin/com/increase/api/core/handlers/EmptyHandler.kt
@@ -0,0 +1,12 @@
+@file:JvmName("EmptyHandler")
+
+package com.increase.api.core.handlers
+
+import com.increase.api.core.http.HttpResponse
+import com.increase.api.core.http.HttpResponse.Handler
+
+@JvmSynthetic internal fun emptyHandler(): Handler<Void?> = EmptyHandlerInternal
+
+private object EmptyHandlerInternal : Handler<Void?> {
+    override fun handle(response: HttpResponse): Void? = null
+}
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/models/events/UnwrapWebhookEvent.kt b/increase-java-core/src/main/kotlin/com/increase/api/models/events/UnwrapWebhookEvent.kt
new file mode 100644
index 000000000..a4f66d543
--- /dev/null
+++ b/increase-java-core/src/main/kotlin/com/increase/api/models/events/UnwrapWebhookEvent.kt
@@ -0,0 +1,113 @@
+// File generated from our OpenAPI spec by Stainless.
+
+package com.increase.api.models.events
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter
+import com.fasterxml.jackson.annotation.JsonAnySetter
+import com.fasterxml.jackson.annotation.JsonCreator
+import com.increase.api.core.ExcludeMissing
+import com.increase.api.core.JsonValue
+import com.increase.api.errors.IncreaseInvalidDataException
+import java.util.Collections
+import java.util.Objects
+
+class UnwrapWebhookEvent
+@JsonCreator(mode = JsonCreator.Mode.DISABLED)
+private constructor(private val additionalProperties: MutableMap<String, JsonValue>) {
+
+    @JsonCreator private constructor() : this(mutableMapOf())
+
+    @JsonAnySetter
+    private fun putAdditionalProperty(key: String, value: JsonValue) {
+        additionalProperties.put(key, value)
+    }
+
+    @JsonAnyGetter
+    @ExcludeMissing
+    fun _additionalProperties(): Map<String, JsonValue> =
+        Collections.unmodifiableMap(additionalProperties)
+
+    fun toBuilder() = Builder().from(this)
+
+    companion object {
+
+        /** Returns a mutable builder for constructing an instance of [UnwrapWebhookEvent]. */
+        @JvmStatic fun builder() = Builder()
+    }
+
+    /** A builder for [UnwrapWebhookEvent]. */
+    class Builder internal constructor() {
+
+        private var additionalProperties: MutableMap<String, JsonValue> = mutableMapOf()
+
+        @JvmSynthetic
+        internal fun from(unwrapWebhookEvent: UnwrapWebhookEvent) = apply {
+            additionalProperties = unwrapWebhookEvent.additionalProperties.toMutableMap()
+        }
+
+        fun additionalProperties(additionalProperties: Map<String, JsonValue>) = apply {
+            this.additionalProperties.clear()
+            putAllAdditionalProperties(additionalProperties)
+        }
+
+        fun putAdditionalProperty(key: String, value: JsonValue) = apply {
+            additionalProperties.put(key, value)
+        }
+
+        fun putAllAdditionalProperties(additionalProperties: Map<String, JsonValue>) = apply {
+            this.additionalProperties.putAll(additionalProperties)
+        }
+
+        fun removeAdditionalProperty(key: String) = apply { additionalProperties.remove(key) }
+
+        fun removeAllAdditionalProperties(keys: Set<String>) = apply {
+            keys.forEach(::removeAdditionalProperty)
+        }
+
+        /**
+         * Returns an immutable instance of [UnwrapWebhookEvent].
+         *
+         * Further updates to this [Builder] will not mutate the returned instance.
+         */
+        fun build(): UnwrapWebhookEvent = UnwrapWebhookEvent(additionalProperties.toMutableMap())
+    }
+
+    private var validated: Boolean = false
+
+    fun validate(): UnwrapWebhookEvent = apply {
+        if (validated) {
+            return@apply
+        }
+
+        validated = true
+    }
+
+    fun isValid(): Boolean =
+        try {
+            validate()
+            true
+        } catch (e: IncreaseInvalidDataException) {
+            false
+        }
+
+    /**
+     * Returns a score indicating how many valid values are contained in this object recursively.
+     *
+     * Used for best match union deserialization.
+     */
+    @JvmSynthetic internal fun validity(): Int = 0
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        return other is UnwrapWebhookEvent && additionalProperties == other.additionalProperties
+    }
+
+    private val hashCode: Int by lazy { Objects.hash(additionalProperties) }
+
+    override fun hashCode(): Int = hashCode
+
+    override fun toString() = "UnwrapWebhookEvent{additionalProperties=$additionalProperties}"
+}
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsync.kt b/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsync.kt
index 129d1066e..6dbc606a4 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsync.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsync.kt
@@ -5,10 +5,12 @@ package com.increase.api.services.async
 import com.increase.api.core.ClientOptions
 import com.increase.api.core.RequestOptions
 import com.increase.api.core.http.HttpResponseFor
+import com.increase.api.errors.IncreaseInvalidDataException
 import com.increase.api.models.events.Event
 import com.increase.api.models.events.EventListPageAsync
 import com.increase.api.models.events.EventListParams
 import com.increase.api.models.events.EventRetrieveParams
+import com.increase.api.models.events.UnwrapWebhookEvent
 import java.util.concurrent.CompletableFuture
 import java.util.function.Consumer
 
@@ -76,6 +78,13 @@ interface EventServiceAsync {
     fun list(requestOptions: RequestOptions): CompletableFuture<EventListPageAsync> =
         list(EventListParams.none(), requestOptions)
 
+    /**
+     * Unwraps a webhook event from its JSON representation.
+     *
+     * @throws IncreaseInvalidDataException if the body could not be parsed.
+     */
+    fun unwrap(body: String): UnwrapWebhookEvent
+
     /** A view of [EventServiceAsync] that provides access to raw HTTP responses for each method. */
     interface WithRawResponse {
 
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsyncImpl.kt b/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsyncImpl.kt
index ab2e1b434..3c4229241 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsyncImpl.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/services/async/EventServiceAsyncImpl.kt
@@ -15,11 +15,14 @@ import com.increase.api.core.http.HttpResponse.Handler
 import com.increase.api.core.http.HttpResponseFor
 import com.increase.api.core.http.parseable
 import com.increase.api.core.prepareAsync
+import com.increase.api.errors.IncreaseInvalidDataException
 import com.increase.api.models.events.Event
 import com.increase.api.models.events.EventListPageAsync
 import com.increase.api.models.events.EventListPageResponse
 import com.increase.api.models.events.EventListParams
 import com.increase.api.models.events.EventRetrieveParams
+import com.increase.api.models.events.UnwrapWebhookEvent
+import com.increase.api.services.blocking.EventServiceImpl
 import java.util.concurrent.CompletableFuture
 import java.util.function.Consumer
 import kotlin.jvm.optionals.getOrNull
@@ -50,6 +53,14 @@ class EventServiceAsyncImpl internal constructor(private val clientOptions: Clie
         // get /events
         withRawResponse().list(params, requestOptions).thenApply { it.parse() }
 
+    /**
+     * Unwraps a webhook event from its JSON representation.
+     *
+     * @throws IncreaseInvalidDataException if the body could not be parsed.
+     */
+    override fun unwrap(body: String): UnwrapWebhookEvent =
+        EventServiceImpl(clientOptions).unwrap(body)
+
     class WithRawResponseImpl internal constructor(private val clientOptions: ClientOptions) :
         EventServiceAsync.WithRawResponse {
 
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventService.kt b/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventService.kt
index b5ef780ae..737406268 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventService.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventService.kt
@@ -6,10 +6,12 @@ import com.google.errorprone.annotations.MustBeClosed
 import com.increase.api.core.ClientOptions
 import com.increase.api.core.RequestOptions
 import com.increase.api.core.http.HttpResponseFor
+import com.increase.api.errors.IncreaseInvalidDataException
 import com.increase.api.models.events.Event
 import com.increase.api.models.events.EventListPage
 import com.increase.api.models.events.EventListParams
 import com.increase.api.models.events.EventRetrieveParams
+import com.increase.api.models.events.UnwrapWebhookEvent
 import java.util.function.Consumer
 
 interface EventService {
@@ -70,6 +72,13 @@ interface EventService {
     fun list(requestOptions: RequestOptions): EventListPage =
         list(EventListParams.none(), requestOptions)
 
+    /**
+     * Unwraps a webhook event from its JSON representation.
+     *
+     * @throws IncreaseInvalidDataException if the body could not be parsed.
+     */
+    fun unwrap(body: String): UnwrapWebhookEvent
+
     /** A view of [EventService] that provides access to raw HTTP responses for each method. */
     interface WithRawResponse {
 
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventServiceImpl.kt b/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventServiceImpl.kt
index 1d9737984..59c35d52b 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventServiceImpl.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/services/blocking/EventServiceImpl.kt
@@ -2,6 +2,7 @@
 
 package com.increase.api.services.blocking
 
+import com.fasterxml.jackson.module.kotlin.jacksonTypeRef
 import com.increase.api.core.ClientOptions
 import com.increase.api.core.RequestOptions
 import com.increase.api.core.checkRequired
@@ -15,11 +16,13 @@ import com.increase.api.core.http.HttpResponse.Handler
 import com.increase.api.core.http.HttpResponseFor
 import com.increase.api.core.http.parseable
 import com.increase.api.core.prepare
+import com.increase.api.errors.IncreaseInvalidDataException
 import com.increase.api.models.events.Event
 import com.increase.api.models.events.EventListPage
 import com.increase.api.models.events.EventListPageResponse
 import com.increase.api.models.events.EventListParams
 import com.increase.api.models.events.EventRetrieveParams
+import com.increase.api.models.events.UnwrapWebhookEvent
 import java.util.function.Consumer
 import kotlin.jvm.optionals.getOrNull
 
@@ -43,6 +46,18 @@ class EventServiceImpl internal constructor(private val clientOptions: ClientOpt
         // get /events
         withRawResponse().list(params, requestOptions).parse()
 
+    /**
+     * Unwraps a webhook event from its JSON representation.
+     *
+     * @throws IncreaseInvalidDataException if the body could not be parsed.
+     */
+    override fun unwrap(body: String): UnwrapWebhookEvent =
+        try {
+            clientOptions.jsonMapper.readValue(body, jacksonTypeRef<UnwrapWebhookEvent>())
+        } catch (e: Exception) {
+            throw IncreaseInvalidDataException("Error parsing body", e)
+        }
+
     class WithRawResponseImpl internal constructor(private val clientOptions: ClientOptions) :
         EventService.WithRawResponse {
 
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/models/events/UnwrapWebhookEventTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/models/events/UnwrapWebhookEventTest.kt
new file mode 100644
index 000000000..70b5c210f
--- /dev/null
+++ b/increase-java-core/src/test/kotlin/com/increase/api/models/events/UnwrapWebhookEventTest.kt
@@ -0,0 +1,30 @@
+// File generated from our OpenAPI spec by Stainless.
+
+package com.increase.api.models.events
+
+import com.fasterxml.jackson.module.kotlin.jacksonTypeRef
+import com.increase.api.core.jsonMapper
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+
+internal class UnwrapWebhookEventTest {
+
+    @Test
+    fun create() {
+        val unwrapWebhookEvent = UnwrapWebhookEvent.builder().build()
+    }
+
+    @Test
+    fun roundtrip() {
+        val jsonMapper = jsonMapper()
+        val unwrapWebhookEvent = UnwrapWebhookEvent.builder().build()
+
+        val roundtrippedUnwrapWebhookEvent =
+            jsonMapper.readValue(
+                jsonMapper.writeValueAsString(unwrapWebhookEvent),
+                jacksonTypeRef<UnwrapWebhookEvent>(),
+            )
+
+        assertThat(roundtrippedUnwrapWebhookEvent).isEqualTo(unwrapWebhookEvent)
+    }
+}
diff --git a/scripts/upload-artifacts b/scripts/upload-artifacts
index 729e6f222..df0c8d9ff 100755
--- a/scripts/upload-artifacts
+++ b/scripts/upload-artifacts
@@ -7,6 +7,8 @@ GREEN='\033[32m'
 RED='\033[31m'
 NC='\033[0m' # No Color
 
+MAVEN_REPO_PATH="./build/local-maven-repo"
+
 log_error() {
     local msg="$1"
     local headers="$2"
@@ -24,7 +26,7 @@ upload_file() {
 
     if [ -f "$file_name" ]; then
         echo -e "${GREEN}Processing file: $file_name${NC}"
-        pkg_file_name="mvn${file_name#./build/local-maven-repo}"
+        pkg_file_name="mvn${file_name#"${MAVEN_REPO_PATH}"}"
 
         # Get signed URL for uploading artifact file
         signed_url_response=$(curl -X POST -G "$URL" \
@@ -47,6 +49,7 @@ upload_file() {
             md5|sha1|sha256|sha512) content_type="text/plain" ;;
             module)                 content_type="application/json" ;;
             pom|xml)                content_type="application/xml" ;;
+            html)                   content_type="text/html" ;;
             *)                      content_type="application/octet-stream" ;;
         esac
 
@@ -81,6 +84,41 @@ walk_tree() {
     done
 }
 
+generate_instructions() {
+    cat << EOF > "$MAVEN_REPO_PATH/index.html"
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Maven Repo</title>
+</head>
+<body>
+    <h1>Stainless SDK Maven Repository</h1>
+    <p>This is the Maven repository for your Stainless Java SDK build.</p>
+
+    <h1>Directions</h1>
+    <p>To use the uploaded Maven repository, add the following to your project's <code>pom.xml</code>:</p>
+    <pre>&lt;repositories&gt;
+    &lt;repository&gt;
+        &lt;id&gt;stainless-sdk-repo&lt;/id&gt;
+        &lt;url&gt;https://pkg.stainless.com/s/${PROJECT}/${SHA}/mvn&lt;/url&gt;
+    &lt;/repository&gt;
+&lt;/repositories&gt;</pre>
+
+    <p>If you're using Gradle, add the following to your <code>build.gradle</code> file:</p>
+    <pre>repositories {
+    maven {
+        url 'https://pkg.stainless.com/s/${PROJECT}/${SHA}/mvn'
+    }
+}</pre>
+</body>
+</html>
+EOF
+    upload_file "${MAVEN_REPO_PATH}/index.html"
+
+    echo "Configure maven or gradle to use the repo located at 'https://pkg.stainless.com/s/${PROJECT}/${SHA}/mvn'"
+    echo "For more details, see the directions in https://pkg.stainless.com/s/${PROJECT}/${SHA}/mvn/index.html"
+}
+
 cd "$(dirname "$0")/.."
 
 echo "::group::Creating local Maven content"
@@ -88,9 +126,9 @@ echo "::group::Creating local Maven content"
 echo "::endgroup::"
 
 echo "::group::Uploading to pkg.stainless.com"
-walk_tree "./build/local-maven-repo"
+walk_tree "$MAVEN_REPO_PATH"
 echo "::endgroup::"
 
 echo "::group::Generating instructions"
-echo "Configure maven or gradle to use the repo located at 'https://pkg.stainless.com/s/${PROJECT}/${SHA}/mvn'"
+generate_instructions
 echo "::endgroup::"