diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 3f63a672..7f3f5c84 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.22.1"
+  ".": "0.23.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index cd23aeae..3d6e5e60 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 40
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/sent/sent-dm-ed2d25d8fc35788cd5a487e5041365c3d269407578e74930a2bab21152dcd082.yml
-openapi_spec_hash: f2858e2f82502940c623e8705564ac83
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/sent/sent-dm-1106fdaad5fe7a7d2eecc598cebbbcd80bd040ba2c5b1217d421835a5511c65a.yml
+openapi_spec_hash: 4205363fafa1cde6864a4691441463c2
 config_hash: 32929c7d4b1344f5bbf67df044a518af
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 331abd4a..13f8c200 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.23.0 (2026-06-29)
+
+Full Changelog: [v0.22.1...v0.23.0](https://github.com/sentdm/sent-dm-ruby/compare/v0.22.1...v0.23.0)
+
+### Features
+
+* **api:** api update ([441c4bd](https://github.com/sentdm/sent-dm-ruby/commit/441c4bdaabc474360f4ad3efd5a1805948e95686))
+* **api:** api update ([702b196](https://github.com/sentdm/sent-dm-ruby/commit/702b196e3037740b8980f60bc4c67719d582d261))
+
 ## 0.22.1 (2026-06-18)
 
 Full Changelog: [v0.22.0...v0.22.1](https://github.com/sentdm/sent-dm-ruby/compare/v0.22.0...v0.22.1)
diff --git a/Gemfile.lock b/Gemfile.lock
index 47d4f65c..121664d8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    sentdm (0.22.1)
+    sentdm (0.23.0)
       cgi
       connection_pool
 
diff --git a/README.md b/README.md
index e239f0f0..0b169867 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "sentdm", "~> 0.22.1"
+gem "sentdm", "~> 0.23.0"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/sentdm/models/message_send_params.rb b/lib/sentdm/models/message_send_params.rb
index c4cd7aa9..af5a02f9 100644
--- a/lib/sentdm/models/message_send_params.rb
+++ b/lib/sentdm/models/message_send_params.rb
@@ -27,7 +27,13 @@ class MessageSendParams < Sentdm::Internal::Type::BaseModel
       #   parameters.
       #
       #   @return [Sentdm::Models::MessageSendParams::Template, nil]
-      optional :template, -> { Sentdm::MessageSendParams::Template }
+      optional :template, -> { Sentdm::MessageSendParams::Template }, nil?: true
+
+      # @!attribute text
+      #   Plain-text (free-form) message body. Provide either Template or this.
+      #
+      #   @return [String, nil]
+      optional :text, String, nil?: true
 
       # @!attribute to
       #   List of recipient phone numbers in E.164 format (multi-recipient fan-out)
@@ -45,7 +51,7 @@ class MessageSendParams < Sentdm::Internal::Type::BaseModel
       #   @return [String, nil]
       optional :x_profile_id, String
 
-      # @!method initialize(channel: nil, sandbox: nil, template: nil, to: nil, idempotency_key: nil, x_profile_id: nil, request_options: {})
+      # @!method initialize(channel: nil, sandbox: nil, template: nil, text: nil, to: nil, idempotency_key: nil, x_profile_id: nil, request_options: {})
       #   Some parameter documentations has been truncated, see
       #   {Sentdm::Models::MessageSendParams} for more details.
       #
@@ -53,7 +59,9 @@ class MessageSendParams < Sentdm::Internal::Type::BaseModel
       #
       #   @param sandbox [Boolean] Sandbox flag - when true, the operation is simulated without side effects
       #
-      #   @param template [Sentdm::Models::MessageSendParams::Template] SDK-style template reference: resolve by ID or by name, with optional parameters
+      #   @param template [Sentdm::Models::MessageSendParams::Template, nil] SDK-style template reference: resolve by ID or by name, with optional parameters
+      #
+      #   @param text [String, nil] Plain-text (free-form) message body. Provide either Template or this.
       #
       #   @param to [Array<String>] List of recipient phone numbers in E.164 format (multi-recipient fan-out)
       #
diff --git a/lib/sentdm/models/profiles/tcr_campaign_with_use_cases.rb b/lib/sentdm/models/profiles/tcr_campaign_with_use_cases.rb
index b4f06d52..451a69b6 100644
--- a/lib/sentdm/models/profiles/tcr_campaign_with_use_cases.rb
+++ b/lib/sentdm/models/profiles/tcr_campaign_with_use_cases.rb
@@ -47,6 +47,16 @@ class TcrCampaignWithUseCases < Sentdm::Models::Profiles::BaseDto
         #   @return [String, nil]
         optional :description, String
 
+        # @!attribute has_submission_transaction
+        #   True when this campaign already has a billing transaction of reference type
+        #   TCR_CAMPAIGN_SUBMISSION (the one-time submission fee was charged). Populated
+        #   only by the campaigns-list path; defaults false on other responses.
+        #
+        #   @return [Boolean, nil]
+        optional :has_submission_transaction,
+                 Sentdm::Internal::Type::Boolean,
+                 api_name: :hasSubmissionTransaction
+
         # @!attribute help_keywords
         #
         #   @return [String, nil]
@@ -162,36 +172,70 @@ class TcrCampaignWithUseCases < Sentdm::Models::Profiles::BaseDto
                  -> { Sentdm::Internal::Type::ArrayOf[Sentdm::Profiles::TcrCampaignWithUseCases::UseCase] },
                  api_name: :useCases
 
-        # @!method initialize(billed_date: nil, brand_id: nil, cost: nil, csp_id: nil, customer_id: nil, dca_elections_complete: nil, dca_elections_completed_at: nil, description: nil, help_keywords: nil, help_message: nil, kyc_submission_form_id: nil, message_flow: nil, name: nil, optin_keywords: nil, optin_message: nil, optout_keywords: nil, optout_message: nil, privacy_policy_link: nil, reseller_id: nil, sharing_status: nil, status: nil, submitted_at: nil, submitted_to_tcr: nil, tcr_campaign_id: nil, tcr_sync_error: nil, telnyx_campaign_id: nil, terms_and_conditions_link: nil, type: nil, upstream_cnp_id: nil, use_cases: nil)
+        # @!method initialize(billed_date: nil, brand_id: nil, cost: nil, csp_id: nil, customer_id: nil, dca_elections_complete: nil, dca_elections_completed_at: nil, description: nil, has_submission_transaction: nil, help_keywords: nil, help_message: nil, kyc_submission_form_id: nil, message_flow: nil, name: nil, optin_keywords: nil, optin_message: nil, optout_keywords: nil, optout_message: nil, privacy_policy_link: nil, reseller_id: nil, sharing_status: nil, status: nil, submitted_at: nil, submitted_to_tcr: nil, tcr_campaign_id: nil, tcr_sync_error: nil, telnyx_campaign_id: nil, terms_and_conditions_link: nil, type: nil, upstream_cnp_id: nil, use_cases: nil)
+        #   Some parameter documentations has been truncated, see
+        #   {Sentdm::Models::Profiles::TcrCampaignWithUseCases} for more details.
+        #
         #   @param billed_date [Time, nil]
+        #
         #   @param brand_id [String, nil]
+        #
         #   @param cost [Float, nil]
+        #
         #   @param csp_id [String, nil]
+        #
         #   @param customer_id [String]
+        #
         #   @param dca_elections_complete [Boolean, nil]
+        #
         #   @param dca_elections_completed_at [Time, nil]
+        #
         #   @param description [String]
+        #
+        #   @param has_submission_transaction [Boolean] True when this campaign already has a billing transaction of reference type
+        #
         #   @param help_keywords [String, nil]
+        #
         #   @param help_message [String, nil]
+        #
         #   @param kyc_submission_form_id [String, nil]
+        #
         #   @param message_flow [String, nil]
+        #
         #   @param name [String]
+        #
         #   @param optin_keywords [String, nil]
+        #
         #   @param optin_message [String, nil]
+        #
         #   @param optout_keywords [String, nil]
+        #
         #   @param optout_message [String, nil]
+        #
         #   @param privacy_policy_link [String, nil]
+        #
         #   @param reseller_id [String, nil]
+        #
         #   @param sharing_status [Symbol, Sentdm::Models::Profiles::TcrCampaignWithUseCases::SharingStatus, nil]
+        #
         #   @param status [Symbol, Sentdm::Models::Profiles::TcrCampaignWithUseCases::Status, nil]
+        #
         #   @param submitted_at [Time, nil]
+        #
         #   @param submitted_to_tcr [Boolean]
+        #
         #   @param tcr_campaign_id [String, nil]
+        #
         #   @param tcr_sync_error [String, nil]
+        #
         #   @param telnyx_campaign_id [String, nil]
+        #
         #   @param terms_and_conditions_link [String, nil]
+        #
         #   @param type [String]
+        #
         #   @param upstream_cnp_id [String, nil]
+        #
         #   @param use_cases [Array<Sentdm::Models::Profiles::TcrCampaignWithUseCases::UseCase>]
 
         module SharingStatus
diff --git a/lib/sentdm/resources/messages.rb b/lib/sentdm/resources/messages.rb
index bb7ec5cc..9d1def11 100644
--- a/lib/sentdm/resources/messages.rb
+++ b/lib/sentdm/resources/messages.rb
@@ -69,13 +69,15 @@ def retrieve_status(id, params = {})
       # Returns immediately with per-recipient message IDs for async tracking via
       # webhooks or the GET /messages/{id} endpoint.
       #
-      # @overload send_(channel: nil, sandbox: nil, template: nil, to: nil, idempotency_key: nil, x_profile_id: nil, request_options: {})
+      # @overload send_(channel: nil, sandbox: nil, template: nil, text: nil, to: nil, idempotency_key: nil, x_profile_id: nil, request_options: {})
       #
       # @param channel [Array<String>, nil] Body param: Channels to broadcast on, e.g. ["whatsapp", "sms"].
       #
       # @param sandbox [Boolean] Body param: Sandbox flag - when true, the operation is simulated without side ef
       #
-      # @param template [Sentdm::Models::MessageSendParams::Template] Body param: SDK-style template reference: resolve by ID or by name, with optiona
+      # @param template [Sentdm::Models::MessageSendParams::Template, nil] Body param: SDK-style template reference: resolve by ID or by name, with optiona
+      #
+      # @param text [String, nil] Body param: Plain-text (free-form) message body. Provide either Template or this
       #
       # @param to [Array<String>] Body param: List of recipient phone numbers in E.164 format (multi-recipient fan
       #
diff --git a/lib/sentdm/version.rb b/lib/sentdm/version.rb
index c694c55f..d1ffd12d 100644
--- a/lib/sentdm/version.rb
+++ b/lib/sentdm/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Sentdm
-  VERSION = "0.22.1"
+  VERSION = "0.23.0"
 end
diff --git a/rbi/sentdm/models/message_send_params.rbi b/rbi/sentdm/models/message_send_params.rbi
index ebeb5ec3..30830f9d 100644
--- a/rbi/sentdm/models/message_send_params.rbi
+++ b/rbi/sentdm/models/message_send_params.rbi
@@ -30,9 +30,17 @@ module Sentdm
       sig { returns(T.nilable(Sentdm::MessageSendParams::Template)) }
       attr_reader :template
 
-      sig { params(template: Sentdm::MessageSendParams::Template::OrHash).void }
+      sig do
+        params(
+          template: T.nilable(Sentdm::MessageSendParams::Template::OrHash)
+        ).void
+      end
       attr_writer :template
 
+      # Plain-text (free-form) message body. Provide either Template or this.
+      sig { returns(T.nilable(String)) }
+      attr_accessor :text
+
       # List of recipient phone numbers in E.164 format (multi-recipient fan-out)
       sig { returns(T.nilable(T::Array[String])) }
       attr_reader :to
@@ -56,7 +64,8 @@ module Sentdm
         params(
           channel: T.nilable(T::Array[String]),
           sandbox: T::Boolean,
-          template: Sentdm::MessageSendParams::Template::OrHash,
+          template: T.nilable(Sentdm::MessageSendParams::Template::OrHash),
+          text: T.nilable(String),
           to: T::Array[String],
           idempotency_key: String,
           x_profile_id: String,
@@ -74,6 +83,8 @@ module Sentdm
         # SDK-style template reference: resolve by ID or by name, with optional
         # parameters.
         template: nil,
+        # Plain-text (free-form) message body. Provide either Template or this.
+        text: nil,
         # List of recipient phone numbers in E.164 format (multi-recipient fan-out)
         to: nil,
         idempotency_key: nil,
@@ -87,7 +98,8 @@ module Sentdm
           {
             channel: T.nilable(T::Array[String]),
             sandbox: T::Boolean,
-            template: Sentdm::MessageSendParams::Template,
+            template: T.nilable(Sentdm::MessageSendParams::Template),
+            text: T.nilable(String),
             to: T::Array[String],
             idempotency_key: String,
             x_profile_id: String,
diff --git a/rbi/sentdm/models/profiles/tcr_campaign_with_use_cases.rbi b/rbi/sentdm/models/profiles/tcr_campaign_with_use_cases.rbi
index 045e1eb9..78cd71eb 100644
--- a/rbi/sentdm/models/profiles/tcr_campaign_with_use_cases.rbi
+++ b/rbi/sentdm/models/profiles/tcr_campaign_with_use_cases.rbi
@@ -42,6 +42,15 @@ module Sentdm
         sig { params(description: String).void }
         attr_writer :description
 
+        # True when this campaign already has a billing transaction of reference type
+        # TCR_CAMPAIGN_SUBMISSION (the one-time submission fee was charged). Populated
+        # only by the campaigns-list path; defaults false on other responses.
+        sig { returns(T.nilable(T::Boolean)) }
+        attr_reader :has_submission_transaction
+
+        sig { params(has_submission_transaction: T::Boolean).void }
+        attr_writer :has_submission_transaction
+
         sig { returns(T.nilable(String)) }
         attr_accessor :help_keywords
 
@@ -155,6 +164,7 @@ module Sentdm
             dca_elections_complete: T.nilable(T::Boolean),
             dca_elections_completed_at: T.nilable(Time),
             description: String,
+            has_submission_transaction: T::Boolean,
             help_keywords: T.nilable(String),
             help_message: T.nilable(String),
             kyc_submission_form_id: T.nilable(String),
@@ -197,6 +207,10 @@ module Sentdm
           dca_elections_complete: nil,
           dca_elections_completed_at: nil,
           description: nil,
+          # True when this campaign already has a billing transaction of reference type
+          # TCR_CAMPAIGN_SUBMISSION (the one-time submission fee was charged). Populated
+          # only by the campaigns-list path; defaults false on other responses.
+          has_submission_transaction: nil,
           help_keywords: nil,
           help_message: nil,
           kyc_submission_form_id: nil,
@@ -233,6 +247,7 @@ module Sentdm
               dca_elections_complete: T.nilable(T::Boolean),
               dca_elections_completed_at: T.nilable(Time),
               description: String,
+              has_submission_transaction: T::Boolean,
               help_keywords: T.nilable(String),
               help_message: T.nilable(String),
               kyc_submission_form_id: T.nilable(String),
diff --git a/rbi/sentdm/resources/messages.rbi b/rbi/sentdm/resources/messages.rbi
index 1442f583..ac399408 100644
--- a/rbi/sentdm/resources/messages.rbi
+++ b/rbi/sentdm/resources/messages.rbi
@@ -51,7 +51,8 @@ module Sentdm
         params(
           channel: T.nilable(T::Array[String]),
           sandbox: T::Boolean,
-          template: Sentdm::MessageSendParams::Template::OrHash,
+          template: T.nilable(Sentdm::MessageSendParams::Template::OrHash),
+          text: T.nilable(String),
           to: T::Array[String],
           idempotency_key: String,
           x_profile_id: String,
@@ -69,6 +70,9 @@ module Sentdm
         # Body param: SDK-style template reference: resolve by ID or by name, with
         # optional parameters.
         template: nil,
+        # Body param: Plain-text (free-form) message body. Provide either Template or
+        # this.
+        text: nil,
         # Body param: List of recipient phone numbers in E.164 format (multi-recipient
         # fan-out)
         to: nil,
diff --git a/sig/sentdm/models/message_send_params.rbs b/sig/sentdm/models/message_send_params.rbs
index 3dd01487..2ca70dc9 100644
--- a/sig/sentdm/models/message_send_params.rbs
+++ b/sig/sentdm/models/message_send_params.rbs
@@ -4,7 +4,8 @@ module Sentdm
       {
         channel: ::Array[String]?,
         sandbox: bool,
-        template: Sentdm::MessageSendParams::Template,
+        template: Sentdm::MessageSendParams::Template?,
+        text: String?,
         to: ::Array[String],
         idempotency_key: String,
         x_profile_id: String
@@ -21,11 +22,9 @@ module Sentdm
 
       def sandbox=: (bool) -> bool
 
-      attr_reader template: Sentdm::MessageSendParams::Template?
+      attr_accessor template: Sentdm::MessageSendParams::Template?
 
-      def template=: (
-        Sentdm::MessageSendParams::Template
-      ) -> Sentdm::MessageSendParams::Template
+      attr_accessor text: String?
 
       attr_reader to: ::Array[String]?
 
@@ -42,7 +41,8 @@ module Sentdm
       def initialize: (
         ?channel: ::Array[String]?,
         ?sandbox: bool,
-        ?template: Sentdm::MessageSendParams::Template,
+        ?template: Sentdm::MessageSendParams::Template?,
+        ?text: String?,
         ?to: ::Array[String],
         ?idempotency_key: String,
         ?x_profile_id: String,
@@ -52,7 +52,8 @@ module Sentdm
       def to_hash: -> {
         channel: ::Array[String]?,
         sandbox: bool,
-        template: Sentdm::MessageSendParams::Template,
+        template: Sentdm::MessageSendParams::Template?,
+        text: String?,
         to: ::Array[String],
         idempotency_key: String,
         x_profile_id: String,
diff --git a/sig/sentdm/models/profiles/tcr_campaign_with_use_cases.rbs b/sig/sentdm/models/profiles/tcr_campaign_with_use_cases.rbs
index 186420c2..1b477a4c 100644
--- a/sig/sentdm/models/profiles/tcr_campaign_with_use_cases.rbs
+++ b/sig/sentdm/models/profiles/tcr_campaign_with_use_cases.rbs
@@ -11,6 +11,7 @@ module Sentdm
           dca_elections_complete: bool?,
           dca_elections_completed_at: Time?,
           description: String,
+          has_submission_transaction: bool,
           help_keywords: String?,
           help_message: String?,
           kyc_submission_form_id: String?,
@@ -68,6 +69,10 @@ module Sentdm
 
         def description=: (String _) -> String
 
+        def has_submission_transaction: -> bool?
+
+        def has_submission_transaction=: (bool _) -> bool
+
         def help_keywords: -> String?
 
         def help_keywords=: (String? _) -> String?
@@ -171,6 +176,7 @@ module Sentdm
           ?dca_elections_complete: bool?,
           ?dca_elections_completed_at: Time?,
           ?description: String,
+          ?has_submission_transaction: bool,
           ?help_keywords: String?,
           ?help_message: String?,
           ?kyc_submission_form_id: String?,
@@ -204,6 +210,7 @@ module Sentdm
           dca_elections_complete: bool?,
           dca_elections_completed_at: Time?,
           description: String,
+          has_submission_transaction: bool,
           help_keywords: String?,
           help_message: String?,
           kyc_submission_form_id: String?,
diff --git a/sig/sentdm/resources/messages.rbs b/sig/sentdm/resources/messages.rbs
index 11038026..a31242ab 100644
--- a/sig/sentdm/resources/messages.rbs
+++ b/sig/sentdm/resources/messages.rbs
@@ -16,7 +16,8 @@ module Sentdm
       def send_: (
         ?channel: ::Array[String]?,
         ?sandbox: bool,
-        ?template: Sentdm::MessageSendParams::Template,
+        ?template: Sentdm::MessageSendParams::Template?,
+        ?text: String?,
         ?to: ::Array[String],
         ?idempotency_key: String,
         ?x_profile_id: String,