diff --git a/GrepolisRemoteControl.user.js b/GrepolisRemoteControl.user.js
index 7e1fb68..e41e8a9 100644
--- a/GrepolisRemoteControl.user.js
+++ b/GrepolisRemoteControl.user.js
@@ -799,32 +799,45 @@
             let intercepted = false;
             let timeoutId;
 
-            // Wrap gpAjax to intercept ANY response that looks like market data
             const origAjaxPost = uw.gpAjax.ajaxPost.bind(uw.gpAjax);
-            uw.gpAjax.ajaxPost = function(controller, action, params, loader, callbacks) {
-                const wrappedCallbacks = callbacks && typeof callbacks === 'object' ? {
-                    success: function(resp) {
-                        // Market data has an 'offers' array
-                        if (!intercepted && resp && resp.offers) {
-                            intercepted = true;
-                            clearTimeout(timeoutId);
-                            uw.gpAjax.ajaxPost = origAjaxPost; // restore
-                            fetch(`${BASE_URL}/api/market_data?player_id=${uw.Game.player_id}`, {
-                                method: 'POST',
-                                headers: { 'Content-Type': 'application/json' },
-                                body: JSON.stringify(resp)
-                            })
-                            .then(() => resolve({ ok: true, msg: `Market scanned: ${resp.offers.length} offers` }))
-                            .catch(e => resolve({ ok: false, msg: 'Upload failed: ' + e }));
-                        }
-                        if (callbacks.success) callbacks.success(resp);
-                    },
-                    error: callbacks.error
-                } : callbacks;
-                return origAjaxPost(controller, action, params, loader, wrappedCallbacks);
+
+            // Handle BOTH Grepolis callback styles:
+            //   Style A: ajaxPost(ctrl, action, params, loader, {success, error})
+            //   Style B: ajaxPost(ctrl, action, params, loader, fnSuccess, fnError)
+            uw.gpAjax.ajaxPost = function(controller, action, params, loader, cbSuccessOrObj, cbError) {
+                const handleResp = function(resp) {
+                    log(`[Market intercept] ctrl:${controller} action:${action} has_offers:${!!(resp && resp.offers)}`);
+                    if (!intercepted && resp && resp.offers) {
+                        intercepted = true;
+                        clearTimeout(timeoutId);
+                        uw.gpAjax.ajaxPost = origAjaxPost;
+                        fetch(`${BASE_URL}/api/market_data?player_id=${uw.Game.player_id}`, {
+                            method: 'POST',
+                            headers: { 'Content-Type': 'application/json' },
+                            body: JSON.stringify(resp)
+                        })
+                        .then(() => resolve({ ok: true, msg: `Market scanned: ${resp.offers.length} offers` }))
+                        .catch(e => resolve({ ok: false, msg: 'Upload failed: ' + e }));
+                    }
+                };
+
+                if (cbSuccessOrObj && typeof cbSuccessOrObj === 'object') {
+                    // Style A — object with success/error keys
+                    const origSuccess = cbSuccessOrObj.success;
+                    return origAjaxPost(controller, action, params, loader, {
+                        success: function(resp) { handleResp(resp); if (origSuccess) origSuccess(resp); },
+                        error: cbSuccessOrObj.error
+                    });
+                } else {
+                    // Style B — separate function args
+                    return origAjaxPost(controller, action, params, loader,
+                        function(resp) { handleResp(resp); if (typeof cbSuccessOrObj === 'function') cbSuccessOrObj(resp); },
+                        cbError
+                    );
+                }
             };
 
-            // Trigger the getData
+            // Trigger getData through frontend_bridge
             origAjaxPost('frontend_bridge', 'execute', {
                 model_url: 'BuildingMarket',
                 action_name: 'getData',
@@ -841,7 +854,7 @@
             // Timeout after 15 seconds
             timeoutId = setTimeout(() => {
                 if (!intercepted) {
-                    uw.gpAjax.ajaxPost = origAjaxPost; // restore
+                    uw.gpAjax.ajaxPost = origAjaxPost;
                     resolve({ ok: false, msg: 'Market scan timed out' });
                 }
             }, 15000);