diff --git a/.qlty/.gitignore b/.qlty/.gitignore
new file mode 100644
index 0000000..3036618
--- /dev/null
+++ b/.qlty/.gitignore
@@ -0,0 +1,7 @@
+*
+!configs
+!configs/**
+!hooks
+!hooks/**
+!qlty.toml
+!.gitignore
diff --git a/.qlty/configs/.shellcheckrc b/.qlty/configs/.shellcheckrc
new file mode 100644
index 0000000..6a38d92
--- /dev/null
+++ b/.qlty/configs/.shellcheckrc
@@ -0,0 +1 @@
+source-path=SCRIPTDIR
\ No newline at end of file
diff --git a/.qlty/configs/.yamllint.yaml b/.qlty/configs/.yamllint.yaml
new file mode 100644
index 0000000..d22fa77
--- /dev/null
+++ b/.qlty/configs/.yamllint.yaml
@@ -0,0 +1,8 @@
+rules:
+  document-start: disable
+  quoted-strings:
+    required: only-when-needed
+    extra-allowed: ["{|}"]
+  key-duplicates: {}
+  octal-values:
+    forbid-implicit-octal: true
diff --git a/.qlty/qlty.toml b/.qlty/qlty.toml
new file mode 100644
index 0000000..ce1d938
--- /dev/null
+++ b/.qlty/qlty.toml
@@ -0,0 +1,82 @@
+# This file was automatically generated by `qlty init`.
+# You can modify it to suit your needs.
+# We recommend you to commit this file to your repository.
+#
+# This configuration is used by both Qlty CLI and Qlty Cloud.
+#
+#     Qlty CLI -- Code quality toolkit for developers
+#     Qlty Cloud -- Fully automated Code Health Platform
+#
+# Try Qlty Cloud: https://qlty.sh
+#
+# For a guide to configuration, visit https://qlty.sh/d/config
+# Or for a full reference, visit https://qlty.sh/d/qlty-toml
+config_version = "0"
+
+exclude_patterns = [
+  "*_min.*",
+  "*-min.*",
+  "*.min.*",
+  "**/.yarn/**",
+  "**/*.d.ts",
+  "**/assets/**",
+  "**/bower_components/**",
+  "**/build/**",
+  "**/cache/**",
+  "**/config/**",
+  "**/db/**",
+  "**/deps/**",
+  "**/dist/**",
+  "**/extern/**",
+  "**/external/**",
+  "**/generated/**",
+  "**/Godeps/**",
+  "**/gradlew/**",
+  "**/mvnw/**",
+  "**/node_modules/**",
+  "**/protos/**",
+  "**/seed/**",
+  "**/target/**",
+  "**/templates/**",
+  "**/testdata/**",
+  "**/vendor/**",
+]
+
+test_patterns = [
+  "**/test/**",
+  "**/spec/**",
+  "**/*.test.*",
+  "**/*.spec.*",
+  "**/*_test.*",
+  "**/*_spec.*",
+  "**/test_*.*",
+  "**/spec_*.*",
+]
+
+[smells]
+mode = "comment"
+
+[smells.boolean_logic]
+threshold = 4
+
+[smells.file_complexity]
+threshold = 55
+
+[smells.return_statements]
+threshold = 4
+
+[smells.nested_control_flow]
+threshold = 4
+
+[smells.function_parameters]
+threshold = 4
+
+[smells.function_complexity]
+threshold = 5
+
+[smells.duplication]
+threshold = 22
+
+[[source]]
+name = "default"
+default = true
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..a4023dc
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+ruby 2.7.5
diff --git a/lib/cc/pull_requests.rb b/lib/cc/pull_requests.rb
index 9d26cb8..bcae0e3 100644
--- a/lib/cc/pull_requests.rb
+++ b/lib/cc/pull_requests.rb
@@ -79,6 +79,10 @@ def test_status_code
     raise NotImplementedError
   end
 
+  def create_migration_notice_commit_status_enabled?
+    false
+  end
+
   def receive_test_status
     url = base_status_url("0" * 40)
     params = { state: "success" }
@@ -103,6 +107,7 @@ def receive_request(*permitted_statuses, call_method)
 
     if permitted_statuses.flatten.include?(state) && report_status?
       send(call_method.to_s + "_#{state}")
+      create_migration_notice_commit_status(commit_sha)
     else
       @response = simple_failure("Unknown state")
     end
@@ -110,6 +115,23 @@ def receive_request(*permitted_statuses, call_method)
     response
   end
 
+  def create_migration_notice_commit_status(commit_sha)
+    return unless create_migration_notice_commit_status_enabled?
+
+    # Temporarily store the original target_url and replace it
+    original_target_url = @payload["details_url"]
+    @payload["details_url"] = "https://docs.qlty.sh/migration/guide"
+
+    update_status(
+      "error",
+      "Code Climate has been replaced by Qlty and will be EOL imminently.",
+      "codeclimate/upgrade"
+    )
+
+    # Restore the original target_url
+    @payload["details_url"] = original_target_url
+  end
+
   def presenter
     CC::Service::PullRequestsPresenter.new(@payload)
   end
diff --git a/lib/cc/services/github_pull_requests.rb b/lib/cc/services/github_pull_requests.rb
index 605d3f0..8f66443 100644
--- a/lib/cc/services/github_pull_requests.rb
+++ b/lib/cc/services/github_pull_requests.rb
@@ -19,6 +19,10 @@ class Config < CC::Service::Config
     attribute :rollout_percentage, Axiom::Types::Integer,
       label: "Author Rollout Percentage",
       description: "The percentage of users to report status for"
+    attribute :create_migration_notice_commit_status, Axiom::Types::Boolean,
+      label: "Create Migration Notice",
+      description: "Post a notice about the migration to Qlty.sh as a failing commit status",
+      default: false
 
     validates :oauth_token, presence: true
   end
@@ -135,4 +139,8 @@ def response_includes_repo_scope?(response)
   def test_status_code
     422
   end
+
+  def create_migration_notice_commit_status_enabled?
+    config.create_migration_notice_commit_status
+  end
 end
diff --git a/spec/cc/pull_requests_spec.rb b/spec/cc/pull_requests_spec.rb
index 8c5760b..24fedde 100644
--- a/spec/cc/pull_requests_spec.rb
+++ b/spec/cc/pull_requests_spec.rb
@@ -8,7 +8,7 @@
     end
 
     context "when the status is valid" do
-      let(:instance) { CC::PullRequests.new({}, name: "test", state: payload_status) }
+      let(:instance) { CC::PullRequests.new({}, commit_sha: "abcd", name: "test", state: payload_status) }
       let(:response) do
         {
           ok: true,