diff --git a/.teamcity/BuildParams.kt b/.teamcity/BuildParams.kt
index 5f6eb84bd95..97ba257f1f4 100644
--- a/.teamcity/BuildParams.kt
+++ b/.teamcity/BuildParams.kt
@@ -4,6 +4,7 @@ object BuildParams {
   const val KOTLINX_COROUTINES_RELEASE_TAG = "1.9.0-RC"
   const val KOTLINX_SERIALIZATION_RELEASE_TAG = "v1.7.2"
   const val KOTLINX_DATETIME_RELEASE_TAG = "v0.6.0"
+  const val KOTLINX_IO_RELEASE_TAG = "0.5.2"
   const val KOTLIN_RELEASE_TAG = "v2.0.20"
 
   const val SEARCH_APP_ID = "7961PKYRXV"
diff --git a/.teamcity/builds/apiReferences/BuildApiReferencesProject.kt b/.teamcity/builds/apiReferences/BuildApiReferencesProject.kt
index 2876ea2b580..9d328b0da7f 100644
--- a/.teamcity/builds/apiReferences/BuildApiReferencesProject.kt
+++ b/.teamcity/builds/apiReferences/BuildApiReferencesProject.kt
@@ -6,6 +6,9 @@ import builds.apiReferences.kotlinx.coroutines.KotlinxCoroutinesPrepareDokkaTemp
 import builds.apiReferences.kotlinx.datetime.KotlinxDatetimeBuildApiReference
 import builds.apiReferences.kotlinx.datetime.KotlinxDatetimeBuildSearchIndex
 import builds.apiReferences.kotlinx.datetime.KotlinxDatetimePrepareDokkaTemplates
+import builds.apiReferences.kotlinx.io.KotlinxIOBuildApiReference
+import builds.apiReferences.kotlinx.io.KotlinxIOBuildSearchIndex
+import builds.apiReferences.kotlinx.io.KotlinxIOPrepareDokkaTemplates
 import builds.apiReferences.kotlinx.metadataJvm.KotlinxMetadataJvmBuildApiReference
 import builds.apiReferences.kotlinx.metadataJvm.KotlinxMetadataJvmBuildSearchIndex
 import builds.apiReferences.kotlinx.metadataJvm.KotlinxMetadataJvmPrepareDokkaTemplates
@@ -21,6 +24,7 @@ import builds.apiReferences.templates.PrepareDokkaTemplate
 import builds.apiReferences.vcsRoots.KotlinMetadataJvm
 import builds.apiReferences.vcsRoots.KotlinxCoroutines
 import builds.apiReferences.vcsRoots.KotlinxDatetime
+import builds.apiReferences.vcsRoots.KotlinxIO
 import builds.apiReferences.vcsRoots.KotlinxSerialization
 import jetbrains.buildServer.configs.kotlin.Project
 
@@ -32,6 +36,10 @@ object BuildApiReferencesProject : Project({
   buildType(KotlinxDatetimeBuildSearchIndex)
   buildType(KotlinxDatetimePrepareDokkaTemplates)
 
+  buildType(KotlinxIOBuildApiReference)
+  buildType(KotlinxIOBuildSearchIndex)
+  buildType(KotlinxIOPrepareDokkaTemplates)
+
   buildType(KotlinxSerializationBuildApiReference)
   buildType(KotlinxSerializationBuildSearchIndex)
   buildType(KotlinxSerializationPrepareDokkaTemplates)
@@ -51,6 +59,7 @@ object BuildApiReferencesProject : Project({
   vcsRoot(KotlinxSerialization)
   vcsRoot(KotlinxCoroutines)
   vcsRoot(KotlinxDatetime)
+  vcsRoot(KotlinxIO)
   vcsRoot(KotlinMetadataJvm)
 
   template(PrepareDokkaTemplate)
diff --git a/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOBuildApiReference.kt b/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOBuildApiReference.kt
new file mode 100644
index 00000000000..2ada2d9c956
--- /dev/null
+++ b/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOBuildApiReference.kt
@@ -0,0 +1,52 @@
+package builds.apiReferences.kotlinx.io
+
+import BuildParams.KOTLINX_IO_RELEASE_TAG
+import builds.apiReferences.dependsOnDokkaTemplate
+import builds.apiReferences.templates.BuildApiReference
+import builds.apiReferences.templates.buildDokkaHTML
+import builds.apiReferences.templates.scriptDokkaVersionSync
+import builds.apiReferences.templates.scriptDropSnapshot
+import jetbrains.buildServer.configs.kotlin.BuildType
+import jetbrains.buildServer.configs.kotlin.buildSteps.script
+
+object KotlinxIOBuildApiReference : BuildType({
+    name = "kotlinx-io API reference"
+
+    templates(BuildApiReference)
+
+    artifactRules = "build/dokka/htmlMultiModule/** => pages.zip"
+
+    params {
+        param("release.tag", KOTLINX_IO_RELEASE_TAG)
+    }
+
+    vcs {
+        root(builds.apiReferences.vcsRoots.KotlinxIO)
+    }
+
+    dependencies {
+        dependsOnDokkaTemplate(KotlinxIOPrepareDokkaTemplates)
+    }
+
+    steps {
+        scriptDropSnapshot {
+          enabled = false // TODO readme, and disable this step for other libs too
+        }
+        scriptDokkaVersionSync {
+            enabled = false // TODO readme, and disable this step for other libs too
+        }
+        buildDokkaHTML {
+            enabled = false // TODO add useGradlewWrapper = true
+        }
+        script {
+            name = "build api reference"
+            scriptContent = """
+                #!/bin/bash
+                
+                 set -e -u
+                
+                ./gradlew dokkaHtmlMultiModule --no-daemon --no-configuration-cache
+            """.trimIndent()
+        }
+    }
+})
diff --git a/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOBuildSearchIndex.kt b/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOBuildSearchIndex.kt
new file mode 100644
index 00000000000..00f7b8046f9
--- /dev/null
+++ b/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOBuildSearchIndex.kt
@@ -0,0 +1,20 @@
+package builds.apiReferences.kotlinx.io
+
+import builds.apiReferences.dependsOnDokkaPagesJson
+import builds.apiReferences.templates.BuildApiReferenceSearchIndex
+import jetbrains.buildServer.configs.kotlin.BuildType
+
+object KotlinxIOBuildSearchIndex: BuildType({
+  name = "Build search index for kotlinx-io"
+
+  templates(BuildApiReferenceSearchIndex)
+
+  params {
+    param("env.ALGOLIA_INDEX_NAME", "kotlinx-io")
+    param("env.API_REFERENCE_URL", "/api/kotlinx-io")
+  }
+
+  dependencies {
+    dependsOnDokkaPagesJson(KotlinxIOBuildApiReference)
+  }
+})
diff --git a/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOPrepareDokkaTemplates.kt b/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOPrepareDokkaTemplates.kt
new file mode 100644
index 00000000000..f2671d53547
--- /dev/null
+++ b/.teamcity/builds/apiReferences/kotlinx/io/KotlinxIOPrepareDokkaTemplates.kt
@@ -0,0 +1,14 @@
+package builds.apiReferences.kotlinx.io
+
+import builds.apiReferences.templates.PrepareDokkaTemplate
+import jetbrains.buildServer.configs.kotlin.BuildType
+
+object KotlinxIOPrepareDokkaTemplates: BuildType({
+  name = "Prepare dokka templates for kotlinx-io"
+
+  templates(PrepareDokkaTemplate)
+
+  params {
+    param("env.ALGOLIA_INDEX_NAME", "kotlinx-io")
+  }
+})
diff --git a/.teamcity/builds/apiReferences/templates/BuildApiReference.kt b/.teamcity/builds/apiReferences/templates/BuildApiReference.kt
index 6274e2da47b..d223cf2522a 100644
--- a/.teamcity/builds/apiReferences/templates/BuildApiReference.kt
+++ b/.teamcity/builds/apiReferences/templates/BuildApiReference.kt
@@ -43,6 +43,7 @@ fun BuildSteps.buildDokkaHTML(block: GradleBuildStep.() -> Unit) = step(
         id = "step-build-dokka-html-id"
         name = "Build dokka html"
         tasks = "dokkaHtmlMultiModule"
+        useGradleWrapper = true
     }.apply(block),
 )
 
diff --git a/.teamcity/builds/apiReferences/vcsRoots/KotlinxIO.kt b/.teamcity/builds/apiReferences/vcsRoots/KotlinxIO.kt
new file mode 100644
index 00000000000..2c98e05766c
--- /dev/null
+++ b/.teamcity/builds/apiReferences/vcsRoots/KotlinxIO.kt
@@ -0,0 +1,18 @@
+package builds.apiReferences.vcsRoots
+
+import BuildParams.KOTLINX_IO_RELEASE_TAG
+import jetbrains.buildServer.configs.kotlin.vcs.GitVcsRoot
+
+object KotlinxIO : GitVcsRoot({
+  name = "kotlinx-io vcs root"
+  url = "git@github.com:Kotlin/kotlinx-io.git"
+  branch = "refs/heads/ktl-1576-kotlinlang-api-ref"
+  branchSpec = """
+        +:refs/heads/(*)
+        +:refs/tags/(*)
+    """.trimIndent()
+  useTagsAsBranches = true
+  authMethod = uploadedKey {
+    uploadedKey = "teamcity"
+  }
+})