diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa4c83a238..28f4e8eeb8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,8 @@ and this project adheres to
 
 ### Fixed
 
+- Allow credentials (raw JSON, HTTP, OAuth) on common adaptor jobs
+  [#4513](https://github.com/OpenFn/lightning/pull/4513)
 - Migrate form error display from `phx-feedback-for` to `used_input?/1` so
   validation errors only appear on fields the user has interacted with
   [#4472](https://github.com/OpenFn/lightning/pull/4472)
diff --git a/assets/js/collaborative-editor/components/ConfigureAdaptorModal.tsx b/assets/js/collaborative-editor/components/ConfigureAdaptorModal.tsx
index 9b3597e98c..935da823ba 100644
--- a/assets/js/collaborative-editor/components/ConfigureAdaptorModal.tsx
+++ b/assets/js/collaborative-editor/components/ConfigureAdaptorModal.tsx
@@ -277,13 +277,6 @@ export function ConfigureAdaptorModal({
     onCredentialChange,
   ]);
 
-  // Check if the adaptor requires credentials
-  const adaptorNeedsCredentials = useMemo(() => {
-    const adaptorName = extractAdaptorName(currentAdaptor);
-    // Common adaptor doesn't require credentials
-    return adaptorName !== 'common';
-  }, [currentAdaptor]);
-
   // Filter credentials into sections
   const credentialSections = useMemo(() => {
     const adaptorName = extractAdaptorName(currentAdaptor);
@@ -442,7 +435,10 @@ export function ConfigureAdaptorModal({
   const handleCreateCredential = () => {
     const adaptorName = extractAdaptorName(currentAdaptor);
     if (adaptorName) {
-      onOpenCredentialModal(adaptorName);
+      // Adaptors like "common" have no credential schema file, so default
+      // to "raw" (Raw JSON) which is the most flexible credential type.
+      const schema = adaptorName === 'common' ? 'raw' : adaptorName;
+      onOpenCredentialModal(schema);
     }
   };
 
@@ -590,27 +586,19 @@ export function ConfigureAdaptorModal({
                         />
                       </Tooltip>
                     </span>
-                    {adaptorNeedsCredentials && (
-                      <button
-                        type="button"
-                        aria-label="Create new credential"
-                        className="text-primary-600 hover:text-primary-700 text-sm font-medium underline focus:outline-none"
-                        onClick={handleCreateCredential}
-                      >
-                        New Credential
-                      </button>
-                    )}
+                    <button
+                      type="button"
+                      aria-label="Create new credential"
+                      className="text-primary-600 hover:text-primary-700 text-sm font-medium underline focus:outline-none"
+                      onClick={handleCreateCredential}
+                    >
+                      New Credential
+                    </button>
                   </div>
 
-                  {!adaptorNeedsCredentials ? (
-                    <div className="border border-gray-200 rounded-md p-6 text-center bg-gray-50">
-                      <p className="text-gray-600 text-sm">
-                        This adaptor does not require credentials.
-                      </p>
-                    </div>
-                  ) : credentialSections.schemaMatched.length === 0 &&
-                    credentialSections.universal.length === 0 &&
-                    credentialSections.keychain.length === 0 ? (
+                  {credentialSections.schemaMatched.length === 0 &&
+                  credentialSections.universal.length === 0 &&
+                  credentialSections.keychain.length === 0 ? (
                     <div className="border border-gray-200 rounded-md p-6 text-center">
                       <p className="text-gray-500 mb-3">
                         No credentials found in this project
diff --git a/assets/test/collaborative-editor/components/ConfigureAdaptorModal.test.tsx b/assets/test/collaborative-editor/components/ConfigureAdaptorModal.test.tsx
index 78115c4e6d..68ffb84a47 100644
--- a/assets/test/collaborative-editor/components/ConfigureAdaptorModal.test.tsx
+++ b/assets/test/collaborative-editor/components/ConfigureAdaptorModal.test.tsx
@@ -742,7 +742,7 @@ describe('ConfigureAdaptorModal', () => {
       expect(radioButtons.length).toBe(3);
     });
 
-    it("shows informative message for adaptors that don't need credentials", () => {
+    it('shows universal and keychain credentials for common adaptor', () => {
       renderWithProviders(
         <ConfigureAdaptorModal
           {...defaultProps}
@@ -750,27 +750,24 @@ describe('ConfigureAdaptorModal', () => {
         />
       );
 
-      // Should show message that adaptor doesn't need credentials
+      // Should NOT show message that adaptor doesn't need credentials
       expect(
-        screen.getByText('This adaptor does not require credentials.')
-      ).toBeInTheDocument();
-
-      // Should NOT show credential list or New Credential button
-      expect(screen.queryByText('HTTP API Key')).not.toBeInTheDocument();
-      expect(screen.queryByText('Keychain Salesforce')).not.toBeInTheDocument();
-      expect(
-        screen.queryByText('Salesforce Production')
+        screen.queryByText('This adaptor does not require credentials.')
       ).not.toBeInTheDocument();
 
-      // New Credential button should be hidden
+      // Should show universal credentials (http, raw, oauth) and keychain
+      expect(screen.getByText('HTTP API Key')).toBeInTheDocument();
+      expect(screen.getByText('Keychain Salesforce')).toBeInTheDocument();
+
+      // Should NOT show schema-specific credentials (no schema matches "common")
       expect(
-        screen.queryByRole('button', { name: /new credential/i })
+        screen.queryByText('Salesforce Production')
       ).not.toBeInTheDocument();
 
-      // Should NOT show "Back to matching credentials" link (no matching credentials to go back to)
+      // New Credential button should be available
       expect(
-        screen.queryByText(/back to matching credentials/i)
-      ).not.toBeInTheDocument();
+        screen.getByRole('button', { name: /new credential/i })
+      ).toBeInTheDocument();
     });
 
     it('allows manual toggle between matching and other credentials', async () => {