diff --git a/model/addons_mgmt/v1/addon_config_type.model b/model/addons_mgmt/v1/addon_config_type.model
new file mode 100644
index 00000000..fe7481b0
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_config_type.model
@@ -0,0 +1,25 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon config.
+// The attributes under it are to be used by the addon once its installed in the cluster.
+struct AddonConfig {
+    // List of environment variables for the addon
+    EnvironmentVariables []AddonEnvironmentVariable
+
+    // List of secret propagations for the addon
+    SecretPropagations []AddonSecretPropagation
+}
diff --git a/model/addons_mgmt/v1/addon_credential_request_type.model b/model/addons_mgmt/v1/addon_credential_request_type.model
new file mode 100644
index 00000000..f2e30add
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_credential_request_type.model
@@ -0,0 +1,30 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Contains the necessary attributes to allow each operator to access the necessary AWS resources
+struct CredentialRequest {
+    // Name of the credentials secret used to access cloud resources
+    Name String
+
+    // Namespace where the credentials secret lives in the cluster
+    Namespace String
+
+    // Service account name to use when authenticating
+    ServiceAccount String
+
+    // List of policy permissions needed to access cloud resources
+    PolicyPermissions []String
+}
diff --git a/model/addons_mgmt/v1/addon_environment_variable_type.model b/model/addons_mgmt/v1/addon_environment_variable_type.model
new file mode 100644
index 00000000..4d19bd43
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_environment_variable_type.model
@@ -0,0 +1,27 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon env object.
+struct AddonEnvironmentVariable {
+    // Name of the env object.
+    Name String
+
+    // Value of the env object.
+    Value String
+
+    // Indicates is this environment variable is enabled for the addon
+    Enabled Boolean
+}
diff --git a/model/addons_mgmt/v1/addon_install_mode_type.model b/model/addons_mgmt/v1/addon_install_mode_type.model
new file mode 100644
index 00000000..a37ffa4c
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_install_mode_type.model
@@ -0,0 +1,26 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon InstallMode field.
+enum AddonInstallMode {
+    // This mode means that the the addon CRD exists in a single specific namespace.
+    // This namespace is reflected by the TargetNamespace addon field
+    OwnNamespace
+
+    // This mode means that the addon is deployed in all namespaces.
+    // However, the addon status is retrieved from the target namespace
+    AllNamespaces
+}
diff --git a/model/addons_mgmt/v1/addon_namespace_type.model b/model/addons_mgmt/v1/addon_namespace_type.model
new file mode 100644
index 00000000..75864a13
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_namespace_type.model
@@ -0,0 +1,30 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon namespace object.
+struct AddonNamespace {
+    // Name of the namespace
+    Name String
+
+    // Enabled shows if this namespace object is in use
+    Enabled Boolean
+
+    // Labels to be included in the addon namespace
+    Labels [String]String
+
+    // Annotations to be included in the addon namespace
+    Annotations [String]String
+}
diff --git a/model/addons_mgmt/v1/addon_parameter_option_type.model b/model/addons_mgmt/v1/addon_parameter_option_type.model
new file mode 100644
index 00000000..2a160670
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_parameter_option_type.model
@@ -0,0 +1,30 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon parameter option.
+struct AddonParameterOption {
+    // Name of the addon parameter option.
+    Name String
+
+    // Value of the addon parameter option.
+    Value String
+
+    // Rank of option to be used in cases where editable direction should be restricted.
+    Rank Integer
+
+    // List of addon requirements for this parameter option.
+    Requirements []AddonRequirement
+}
diff --git a/model/addons_mgmt/v1/addon_parameter_type.model b/model/addons_mgmt/v1/addon_parameter_type.model
new file mode 100644
index 00000000..b7b63f4d
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_parameter_type.model
@@ -0,0 +1,58 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon parameter.
+struct AddonParameter {
+    // ID for this addon parameter
+    ID String
+
+    // Name of the addon parameter.
+    Name String
+
+    // Description of the addon parameter.
+    Description String
+
+    // Type of value of the addon parameter.
+    ValueType AddonParameterValueType
+
+    // Validation rule for the addon parameter.
+    Validation String
+
+    // Error message to return should the parameter be invalid.
+    ValidationErrMsg String
+
+    // Indicates if this parameter is required by the addon.
+    Required Boolean
+
+    // Indicates if this parameter can be edited after creation.
+    Editable Boolean
+
+    // Restricts if the parameter can be upscaled/downscaled
+    // Expected values are "up", "down", or "" (no restriction).
+    EditableDirection String
+
+    // Indicates if this parameter is enabled for the addon.
+    Enabled Boolean
+
+    // Indicates the value default for the addon parameter.
+    DefaultValue String
+
+    // List of options for the addon parameter value.
+    Options []AddonParameterOption
+
+    // Conditions in which this parameter is valid for
+    Conditions []AddonRequirement
+}
diff --git a/model/addons_mgmt/v1/addon_parameter_value_type.model b/model/addons_mgmt/v1/addon_parameter_value_type.model
new file mode 100644
index 00000000..2019c8cc
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_parameter_value_type.model
@@ -0,0 +1,36 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of the value type for this specific addon parameter
+enum AddonParameterValueType {
+    // This value type must be a valid string
+    String
+
+    // This value type must be a valid boolean
+    Boolean
+
+    // This value type must be a valid number, this includes integer and float type numbers
+    Number
+
+    // This value type enforces a valid CIDR value to be passed as parameter value
+    CIDR
+
+    // This value must match a valid SKU resource in OCM
+    Resource
+
+    // This value must match a valid SKU resource in OCM and allows for validation of SKU resource in OCM
+    ResourceRequirement
+}
diff --git a/model/addons_mgmt/v1/addon_requirement_resource_type.model b/model/addons_mgmt/v1/addon_requirement_resource_type.model
new file mode 100644
index 00000000..b2a5b66c
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_requirement_resource_type.model
@@ -0,0 +1,28 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Addon requirement resource type
+enum AddonRequirementResource {
+    // This requirement resource data will be validated and checked against cluster resources
+    Cluster
+
+    // This requirement resource data will be validated and checked against machine pool resources
+    @json(name = "machine_pool")
+    MachinePool
+
+    // This requirement resource data will be validated and checked against addon installation resources
+    Addon
+}
diff --git a/model/addons_mgmt/v1/addon_requirement_status_type.model b/model/addons_mgmt/v1/addon_requirement_status_type.model
new file mode 100644
index 00000000..3c80ce87
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_requirement_status_type.model
@@ -0,0 +1,24 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon requirement status.
+struct AddonRequirementStatus {
+    // Indicates if this requirement is fulfilled.
+    Fulfilled Boolean
+
+    // Error messages detailing reasons for unfulfilled requirements.
+    ErrorMsgs []String
+}
diff --git a/model/addons_mgmt/v1/addon_requirement_type.model b/model/addons_mgmt/v1/addon_requirement_type.model
new file mode 100644
index 00000000..9e18abf9
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_requirement_type.model
@@ -0,0 +1,33 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon requirement.
+struct AddonRequirement {
+    // ID of the addon requirement.
+    ID String
+
+    // Type of resource of the addon requirement.
+    Resource AddonRequirementResource
+
+    // Data for the addon requirement.
+    Data [String]Interface
+
+    // Indicates if this requirement is enabled for the addon.
+    Enabled Boolean
+
+    // Optional cluster specific status for the addon.
+    Status AddonRequirementStatus
+}
diff --git a/model/addons_mgmt/v1/addon_resource.model b/model/addons_mgmt/v1/addon_resource.model
new file mode 100644
index 00000000..6147920a
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_resource.model
@@ -0,0 +1,41 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Manages a specific addon.
+resource Addon {
+	// Retrieves the details of the addon.
+	method Get {
+		out Body Addon
+	}
+
+	// Updates the addon.
+	method Update {
+		// DryRun indicates the request body will not be persisted when dryRun=true. 
+		@json(name = "dryRun")
+		in DryRun Boolean
+
+		in out Body Addon
+	}
+
+	// Deletes the addon.
+	method Delete {
+	}
+
+	// Reference to the resource that manages the collection of addon versions.
+	locator Versions {
+		target AddonVersions
+	}
+}
diff --git a/model/addons_mgmt/v1/addon_secret_propagation_type.model b/model/addons_mgmt/v1/addon_secret_propagation_type.model
new file mode 100644
index 00000000..d02935b9
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_secret_propagation_type.model
@@ -0,0 +1,30 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon secret propagation
+struct AddonSecretPropagation {
+    // ID of the secret propagation
+    ID string
+
+    // SourceSecret is location of the source secret
+    SourceSecret String
+
+    // DestinationSecret is location of the secret to be added
+    DestinationSecret String
+
+    // Indicates is this secret propagation is enabled for the addon
+    Enabled Boolean
+}
diff --git a/model/addons_mgmt/v1/addon_sub_operator_type.model b/model/addons_mgmt/v1/addon_sub_operator_type.model
new file mode 100644
index 00000000..208948e4
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_sub_operator_type.model
@@ -0,0 +1,29 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon sub operator. A sub operator is an operator
+// who's life cycle is controlled by the addon umbrella operator.
+struct AddonSubOperator {
+    // Name of the addon sub operator
+    OperatorName String
+
+    // Namespace of the addon sub operator
+    OperatorNamespace String
+
+    // Indicates if the sub operator is enabled for the addon
+    Enabled Boolean
+}
+
diff --git a/model/addons_mgmt/v1/addon_type.model b/model/addons_mgmt/v1/addon_type.model
new file mode 100644
index 00000000..d3df35ef
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_type.model
@@ -0,0 +1,81 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon that can be installed in a cluster.
+class Addon {
+    // Name of the addon.
+    Name String
+
+    // Description of the addon.
+    Description String
+
+    // Link to documentation about the addon.
+    DocsLink String
+
+    // Label used to attach to a cluster deployment when addon is installed.
+    Label String
+
+    // Base64-encoded icon representing an addon. The icon should be in PNG format.
+    Icon String
+
+    // Indicates if this addon can be added to clusters.
+    Enabled Boolean
+
+    // Indicates if this addon is hidden.
+    Hidden Boolean
+
+    // Used to determine from where to reserve quota for this addon.
+    ResourceName String
+
+    // Used to determine how many units of quota an addon consumes per resource name.
+    ResourceCost Float
+
+    // The namespace in which the addon CRD exists.
+    TargetNamespace String
+
+    // The mode in which the addon is deployed.
+    InstallMode AddonInstallMode
+
+    // The name of the operator installed by this addon.
+    OperatorName String
+
+    // Indicates if this addon has external resources associated with it
+    HasExternalResources Boolean
+
+    // List of parameters for this addon.
+    Parameters []AddonParameter
+
+    // List of requirements for this addon.
+    Requirements []AddonRequirement
+
+    // List of sub operators for this addon.
+    SubOperators []AddonSubOperator
+
+    // List of credentials requests to authenticate operators to access cloud resources.
+    CredentialsRequests []CredentialRequest
+
+    // Additional configs to be used by the addon once its installed in the cluster.
+    Config  AddonConfig
+
+    // List of namespaces associated with this addon.
+    Namespaces []AddonNamespace
+
+    // Link to the current default version of this addon.
+    link Version AddonVersion
+
+    // Indicates if addon is part of a managed service
+    ManagedService Boolean
+}
diff --git a/model/addons_mgmt/v1/addon_version_additional_catalog_sources_type.model b/model/addons_mgmt/v1/addon_version_additional_catalog_sources_type.model
new file mode 100644
index 00000000..1df0d133
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_version_additional_catalog_sources_type.model
@@ -0,0 +1,30 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon catalog source object used by addon versions.
+struct AdditionalCatalogSource {
+    // ID of the additional catalog source
+    ID String
+
+    // Name of the additional catalog source.
+    Name String
+
+    // Image of the additional catalog source.
+    Image String
+
+    // Indicates is this additional catalog source is enabled for the addon
+    Enabled Boolean
+}
diff --git a/model/addons_mgmt/v1/addon_version_resource.model b/model/addons_mgmt/v1/addon_version_resource.model
new file mode 100644
index 00000000..88473f4e
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_version_resource.model
@@ -0,0 +1,36 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Manages a specific addon version.
+resource AddonVersion {
+	// Retrieves the details of the addon version.
+	method Get {
+		out Body AddonVersion
+	}
+
+	// Updates the addon version.
+	method Update {
+		// DryRun indicates the request body will not be persisted when dryRun=true. 
+		@json(name = "dryRun")
+		in DryRun Boolean
+
+		in out Body AddonVersion
+	}
+
+	// Deletes the addon version.
+	method Delete {
+	}
+}
diff --git a/model/addons_mgmt/v1/addon_version_type.model b/model/addons_mgmt/v1/addon_version_type.model
new file mode 100644
index 00000000..dc373d0a
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_version_type.model
@@ -0,0 +1,48 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of an addon version.
+class AddonVersion {
+    // Indicates if this addon version can be added to clusters.
+    Enabled Boolean
+
+    // The catalog source image for this addon version.
+    SourceImage String
+
+    // The pull secret name used for this addon version.
+    PullSecretName String
+
+    // The specific addon catalog source channel of packages
+    Channel String
+
+    // Additional catalog sources associated with this addon version
+    AdditionalCatalogSources []AdditionalCatalogSource
+
+    // List of parameters for this addon version.
+    Parameters []AddonParameter
+
+    // List of requirements for this addon version.
+    Requirements []AddonRequirement
+
+    // List of sub operators for this addon version.
+    SubOperators []AddonSubOperator
+
+    // Additional configs to be used by the addon once its installed in the cluster.
+    Config  AddonConfig
+
+    // AvailableUpgrades is the list of versions this version can be upgraded to.
+    AvailableUpgrades []String
+}
diff --git a/model/addons_mgmt/v1/addon_versions_resource.model b/model/addons_mgmt/v1/addon_versions_resource.model
new file mode 100644
index 00000000..2d7edace
--- /dev/null
+++ b/model/addons_mgmt/v1/addon_versions_resource.model
@@ -0,0 +1,80 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Manages the collection of addon versions.
+resource AddonVersions {
+	// Retrieves the list of addon versions.
+	method List {
+		// Index of the requested page, where one corresponds to the first page.
+		in out Page Integer = 1
+
+		// Maximum number of items that will be contained in the returned page.
+		in out Size Integer = 100
+
+		// Search criteria.
+		//
+		// The syntax of this parameter is similar to the syntax of the _where_ clause of an
+		// SQL statement, but using the names of the attributes of the addon version instead
+		// of the names of the columns of a table. For example, in order to retrieve all the
+		// addon versions with an id starting with `0.1` the value should be:
+		//
+		// ```sql
+		// id like '0.1.%'
+		// ```
+		//
+		// If the parameter isn't provided, or if the value is empty, then all the addon
+		// versions that the user has permission to see will be returned.
+		in Search String
+
+		// Order criteria.
+		//
+		// The syntax of this parameter is similar to the syntax of the _order by_ clause of
+		// a SQL statement, but using the names of the attributes of the addon instead of
+		// the names of the columns of a table. For example, in order to sort the addon
+		// versions descending by id the value should be:
+		//
+		// ```sql
+		// id desc
+		// ```
+		//
+		// If the parameter isn't provided, or if the value is empty, then the order of the
+		// results is undefined.
+		in Order String
+
+		// Total number of items of the collection that match the search criteria,
+		// regardless of the size of the page.
+		out Total Integer
+
+		// Retrieved list of addon versions.
+		out Items []AddonVersion
+	}
+
+	// Create a new addon version and add it to the collection of addons.
+	method Add {
+		// DryRun indicates the request body will not be persisted when dryRun=true. 
+		@json(name = "dryRun")
+		in DryRun Boolean
+
+		// Description of the addon version.
+		in out Body AddonVersion
+	}
+
+	// Returns a reference to the service that manages a specific addon version.
+	locator Version {
+		target AddonVersion
+		variable ID
+	}
+}
diff --git a/model/addons_mgmt/v1/addons_resource.model b/model/addons_mgmt/v1/addons_resource.model
new file mode 100644
index 00000000..508bcbd9
--- /dev/null
+++ b/model/addons_mgmt/v1/addons_resource.model
@@ -0,0 +1,80 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Manages the collection of addons.
+resource Addons {
+	// Retrieves the list of addons.
+	method List {
+		// Index of the requested page, where one corresponds to the first page.
+		in out Page Integer = 1
+
+		// Maximum number of items that will be contained in the returned page.
+		in out Size Integer = 100
+
+		// Search criteria.
+		//
+		// The syntax of this parameter is similar to the syntax of the _where_ clause of an
+		// SQL statement, but using the names of the attributes of the addon instead of
+		// the names of the columns of a table. For example, in order to retrieve all the
+		// addons with a name starting with `my` the value should be:
+		//
+		// ```sql
+		// name like 'my%'
+		// ```
+		//
+		// If the parameter isn't provided, or if the value is empty, then all the addons
+		// that the user has permission to see will be returned.
+		in Search String
+
+		// Order criteria.
+		//
+		// The syntax of this parameter is similar to the syntax of the _order by_ clause of
+		// a SQL statement, but using the names of the attributes of the addon instead of
+		// the names of the columns of a table. For example, in order to sort the addons
+		// descending by name the value should be:
+		//
+		// ```sql
+		// name desc
+		// ```
+		//
+		// If the parameter isn't provided, or if the value is empty, then the order of the
+		// results is undefined.
+		in Order String
+
+		// Total number of items of the collection that match the search criteria,
+		// regardless of the size of the page.
+		out Total Integer
+
+		// Retrieved list of add-ons.
+		out Items []Addon
+	}
+
+	// Create a new addon and add it to the collection of addons.
+	method Add {
+		// DryRun indicates the request body will not be persisted when dryRun=true. 
+		@json(name = "dryRun")
+		in DryRun Boolean
+
+		// Description of the addon.
+		in out Body Addon
+	}
+
+	// Returns a reference to the service that manages a specific addon.
+	locator Addon {
+		target Addon
+		variable ID
+	}
+}
diff --git a/model/addons_mgmt/v1/root_resource.model b/model/addons_mgmt/v1/root_resource.model
new file mode 100644
index 00000000..e51ce6b2
--- /dev/null
+++ b/model/addons_mgmt/v1/root_resource.model
@@ -0,0 +1,23 @@
+/*
+Copyright (c) 2022 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Root of the tree of resources of the Addons Management.
+resource Root {
+    // Reference to the resource that manages the collection of Addons.
+    locator Addons {
+        target Addons
+    }
+}