diff --git a/app/graphql/types/flow_type.rb b/app/graphql/types/flow_type.rb
index 6afaeee7..9e0bedd6 100644
--- a/app/graphql/types/flow_type.rb
+++ b/app/graphql/types/flow_type.rb
@@ -23,9 +23,6 @@ class FlowType < Types::BaseObject
           null: false,
           method: :flow_settings,
           description: 'The settings of the flow'
-    field :signature, String,
-          null: false,
-          description: 'The signature of the flow'
     field :starting_node_id, Types::GlobalIdType[::NodeFunction],
           null: true,
           description: 'The ID of the starting node of the flow'
diff --git a/app/graphql/types/input/flow_input_type.rb b/app/graphql/types/input/flow_input_type.rb
index 48750c1d..321f5cf9 100644
--- a/app/graphql/types/input/flow_input_type.rb
+++ b/app/graphql/types/input/flow_input_type.rb
@@ -17,8 +17,6 @@ class FlowInputType < Types::BaseInputObject
 
       argument :type, Types::GlobalIdType[::FlowType], required: true,
                                                        description: 'The identifier of the flow type'
-
-      argument :signature, String, required: false, description: 'The signature of the flow'
     end
   end
 end
diff --git a/app/models/flow.rb b/app/models/flow.rb
index 7c451750..3871aec4 100644
--- a/app/models/flow.rb
+++ b/app/models/flow.rb
@@ -41,8 +41,6 @@ class Flow < ApplicationRecord
                    allow_blank: false,
                    uniqueness: { case_sensitive: false, scope: :project_id }
 
-  validates :signature, presence: true, length: { maximum: 500 }
-
   scope :enabled, -> { where(disabled_reason: nil) }
   scope :disabled, -> { where.not(disabled_reason: nil) }
 
@@ -61,7 +59,7 @@ def to_grpc
       settings: flow_settings.map(&:to_grpc),
       starting_node_id: starting_node&.id,
       node_functions: node_functions.map(&:to_grpc),
-      signature: signature
+      signature: flow_type.signature
     )
   end
 
diff --git a/app/services/namespaces/projects/flows/create_service.rb b/app/services/namespaces/projects/flows/create_service.rb
index 838c9e94..b2470f6c 100644
--- a/app/services/namespaces/projects/flows/create_service.rb
+++ b/app/services/namespaces/projects/flows/create_service.rb
@@ -38,8 +38,7 @@ def execute
             flow = Flow.new(
               project: namespace_project,
               name: flow_input.name,
-              flow_type: flow_type,
-              signature: flow_input.signature.presence || flow_type.signature
+              flow_type: flow_type
             )
 
             unless flow.save
diff --git a/app/services/namespaces/projects/flows/update_service.rb b/app/services/namespaces/projects/flows/update_service.rb
index 639b9b65..4ec3d656 100644
--- a/app/services/namespaces/projects/flows/update_service.rb
+++ b/app/services/namespaces/projects/flows/update_service.rb
@@ -48,7 +48,6 @@ def update_flow(t)
 
         def update_flow_attributes
           flow.name = flow_input.name
-          flow.signature = flow_input.signature if flow_input.signature.present?
           flow.validation_status = :unvalidated
         end
 
diff --git a/db/migrate/20260629120000_remove_signature_from_flows.rb b/db/migrate/20260629120000_remove_signature_from_flows.rb
new file mode 100644
index 00000000..28036220
--- /dev/null
+++ b/db/migrate/20260629120000_remove_signature_from_flows.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class RemoveSignatureFromFlows < Code0::ZeroTrack::Database::Migration[1.0]
+  def up
+    remove_column :flows, :signature
+  end
+
+  def down
+    add_column :flows, :signature, :text, null: false, default: '', limit: 500
+  end
+end
diff --git a/db/schema_migrations/20260629120000 b/db/schema_migrations/20260629120000
new file mode 100644
index 00000000..0e03ce5f
--- /dev/null
+++ b/db/schema_migrations/20260629120000
@@ -0,0 +1 @@
+68074a1fb7f8bdf3087c3b6823eaef35175c480f05d4bc73c190ef7b2811cf68
\ No newline at end of file
diff --git a/db/structure.sql b/db/structure.sql
index 8ddde1a7..ece51e27 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -361,9 +361,7 @@ CREATE TABLE flows (
     created_at timestamp with time zone NOT NULL,
     updated_at timestamp with time zone NOT NULL,
     validation_status integer DEFAULT 0 NOT NULL,
-    disabled_reason integer,
-    signature text DEFAULT ''::text NOT NULL,
-    CONSTRAINT check_8c731c24ec CHECK ((char_length(signature) <= 500))
+    disabled_reason integer
 );
 
 CREATE SEQUENCE flows_id_seq
diff --git a/docs/graphql/input_object/flowinput.md b/docs/graphql/input_object/flowinput.md
index 6c4809e5..c1774a17 100644
--- a/docs/graphql/input_object/flowinput.md
+++ b/docs/graphql/input_object/flowinput.md
@@ -11,6 +11,5 @@ Input type for creating or updating a flow
 | `name` | [`String!`](../scalar/string.md) | The name of the flow |
 | `nodes` | [`[NodeFunctionInput!]!`](../input_object/nodefunctioninput.md) | The node functions of the flow |
 | `settings` | [`[FlowSettingInput!]`](../input_object/flowsettinginput.md) | The settings of the flow |
-| `signature` | [`String`](../scalar/string.md) | The signature of the flow |
 | `startingNodeId` | [`NodeFunctionID`](../scalar/nodefunctionid.md) | The starting node of the flow |
 | `type` | [`FlowTypeID!`](../scalar/flowtypeid.md) | The identifier of the flow type |
diff --git a/docs/graphql/object/flow.md b/docs/graphql/object/flow.md
index d9491cc1..05128149 100644
--- a/docs/graphql/object/flow.md
+++ b/docs/graphql/object/flow.md
@@ -17,7 +17,6 @@ Represents a flow
 | `nodes` | [`NodeFunctionConnection!`](../object/nodefunctionconnection.md) | Nodes of the flow |
 | `project` | [`NamespaceProject!`](../object/namespaceproject.md) | The project the flow belongs to |
 | `settings` | [`FlowSettingConnection!`](../object/flowsettingconnection.md) | The settings of the flow |
-| `signature` | [`String!`](../scalar/string.md) | The signature of the flow |
 | `startingNodeId` | [`NodeFunctionID`](../scalar/nodefunctionid.md) | The ID of the starting node of the flow |
 | `type` | [`FlowType!`](../object/flowtype.md) | The flow type of the flow |
 | `updatedAt` | [`Time!`](../scalar/time.md) | Time when this Flow was last updated |
diff --git a/spec/factories/flows.rb b/spec/factories/flows.rb
index 9ddb18f0..71971eb9 100644
--- a/spec/factories/flows.rb
+++ b/spec/factories/flows.rb
@@ -9,7 +9,6 @@
     validation_status { :unvalidated }
     starting_node { nil }
     flow_settings { [] }
-    signature { '(): undefined' }
     name { generate(:flow_name) }
   end
 end
diff --git a/spec/models/flow_spec.rb b/spec/models/flow_spec.rb
index c943dcf4..b8941970 100644
--- a/spec/models/flow_spec.rb
+++ b/spec/models/flow_spec.rb
@@ -25,9 +25,6 @@
 
     it { is_expected.to validate_presence_of(:name) }
     it { is_expected.to validate_uniqueness_of(:name).case_insensitive.scoped_to(:project_id) }
-
-    it { is_expected.to validate_presence_of(:signature) }
-    it { is_expected.to validate_length_of(:signature).is_at_most(500) }
   end
 
   describe 'scopes' do
@@ -46,8 +43,11 @@
     let(:flow) do
       create(
         :flow,
-        flow_type: create(:flow_type, identifier: 'HTTP'),
-        signature: '(input: REST_ADAPTER_INPUT): HTTP_RESPONSE',
+        flow_type: create(
+          :flow_type,
+          identifier: 'HTTP',
+          signature: '(input: REST_ADAPTER_INPUT): HTTP_RESPONSE'
+        ),
         disabled_reason: 0,
         flow_settings: [
           create(
@@ -100,7 +100,7 @@
           project_id: flow.project.id,
           project_slug: flow.project.slug,
           type: flow.flow_type.identifier,
-          signature: flow.signature,
+          signature: flow.flow_type.signature,
           node_functions: [
             {
               database_id: starting_node.id,
diff --git a/spec/requests/graphql/mutation/namespace/projects/flows/create_mutation_spec.rb b/spec/requests/graphql/mutation/namespace/projects/flows/create_mutation_spec.rb
index 45dec25b..7cd7dfbd 100644
--- a/spec/requests/graphql/mutation/namespace/projects/flows/create_mutation_spec.rb
+++ b/spec/requests/graphql/mutation/namespace/projects/flows/create_mutation_spec.rb
@@ -14,7 +14,6 @@
           #{error_query}
           flow {
             id
-            signature
             startingNodeId
             nodes {
               count
@@ -180,12 +179,9 @@
         graphql_data_at(:namespaces_projects_flows_create, :flow)
       ).to match a_graphql_entity_for(
         flow,
-        :signature,
         starting_node_id: flow.starting_node.to_global_id.to_s
       )
 
-      expect(flow.signature).to eq(flow_type.signature)
-
       expect(graphql_data_at(:namespaces_projects_flows_create, :flow, :settings).size).to eq(1)
 
       nodes = graphql_data_at(:namespaces_projects_flows_create, :flow, :nodes, :nodes)
diff --git a/spec/requests/graphql/mutation/namespace/projects/flows/update_mutation_spec.rb b/spec/requests/graphql/mutation/namespace/projects/flows/update_mutation_spec.rb
index b467eb1d..a9652f29 100644
--- a/spec/requests/graphql/mutation/namespace/projects/flows/update_mutation_spec.rb
+++ b/spec/requests/graphql/mutation/namespace/projects/flows/update_mutation_spec.rb
@@ -14,7 +14,6 @@
           #{error_query}
           flow {
             id
-            signature
             startingNodeId
             nodes {
               count
@@ -92,7 +91,6 @@
       flowInput: {
         name: generate(:flow_name),
         type: flow_type.to_global_id.to_s,
-        signature: 'updated_signature',
         startingNodeId: 'gid://sagittarius/NodeFunction/1000',
         settings: {
           value: {
@@ -185,12 +183,9 @@
         graphql_data_at(:namespaces_projects_flows_update, :flow)
       ).to match a_graphql_entity_for(
         flow,
-        :signature,
         starting_node_id: flow.starting_node.to_global_id.to_s
       )
 
-      expect(flow.signature).to eq(input[:flowInput][:signature])
-
       expect(graphql_data_at(:namespaces_projects_flows_update, :flow, :settings).size).to eq(1)
       expect(
         graphql_data_at(:namespaces_projects_flows_update, :flow, :settings, :nodes).first
diff --git a/spec/services/namespaces/projects/flows/create_service_spec.rb b/spec/services/namespaces/projects/flows/create_service_spec.rb
index e827a1a8..4fc6b9bc 100644
--- a/spec/services/namespaces/projects/flows/create_service_spec.rb
+++ b/spec/services/namespaces/projects/flows/create_service_spec.rb
@@ -12,10 +12,9 @@
   let(:namespace_project) { create(:namespace_project, primary_runtime: runtime) }
 
   let(:flow_input) do
-    Struct.new(:settings, :type, :signature, :starting_node_id, :nodes, :name, keyword_init: true).new(
+    Struct.new(:settings, :type, :starting_node_id, :nodes, :name, keyword_init: true).new(
       settings: [],
       type: create(:flow_type, runtime: runtime).to_global_id,
-      signature: nil,
       starting_node_id: 'gid://sagittarius/NodeFunction/12345',
       nodes: [
         Struct.new(:id, :function_definition_id, :next_node_id, :parameters).new(
@@ -54,10 +53,9 @@
   context 'when starting node is nil' do
     let(:current_user) { create(:user) }
     let(:flow_input) do
-      Struct.new(:settings, :type, :signature, :starting_node_id, :nodes, :name, keyword_init: true).new(
+      Struct.new(:settings, :type, :starting_node_id, :nodes, :name, keyword_init: true).new(
         settings: [],
         type: create(:flow_type, runtime: runtime).to_global_id,
-        signature: nil,
         starting_node_id: nil,
         nodes: [
           Struct.new(:id, :function_definition_id, :next_node_id, :parameters).new(
diff --git a/spec/services/namespaces/projects/flows/update_service_spec.rb b/spec/services/namespaces/projects/flows/update_service_spec.rb
index 5cf7e45c..e9e43161 100644
--- a/spec/services/namespaces/projects/flows/update_service_spec.rb
+++ b/spec/services/namespaces/projects/flows/update_service_spec.rb
@@ -23,9 +23,8 @@
   end
   let(:flow) { create(:flow, project: namespace_project, flow_type: create(:flow_type, runtime: runtime)) }
   let(:flow_input) do
-    Struct.new(:settings, :signature, :starting_node_id, :nodes, :name, keyword_init: true).new(
+    Struct.new(:settings, :starting_node_id, :nodes, :name, keyword_init: true).new(
       settings: [],
-      signature: '(input: STRING): NUMBER',
       starting_node_id: starting_node.to_global_id,
       nodes: [
         Struct.new(:id, :function_definition_id, :next_node_id, :parameters).new(