diff --git a/mcp-server/tools/media/upload.js b/mcp-server/tools/media/upload.js
index 1720338..739a6bc 100644
--- a/mcp-server/tools/media/upload.js
+++ b/mcp-server/tools/media/upload.js
@@ -100,11 +100,11 @@ async function resolveLocalImageAsBase64(imageUrl) {
 export function registerUploadRecordImageTool(server) {
     server.tool(
         "upload_record_image",
-        "Upload an image to a specific record field in Acai CMS. Downloads the image from a URL and uploads it. Table names are WITHOUT the 'cms_' prefix. The recordId is the 'num' primary key, never 'id'. If the URL came from generate_image, prefer uploadUrl (or fullUrl) over dockerUrl in Forge environments.",
+        "Upload an image to a specific record field in Acai CMS. MANDATORY: before calling this tool, you MUST call get_table_schema with minimal=true to find the EXACT upload field name. Look for fields with type='upload'. NEVER guess field names. Table names WITHOUT 'cms_' prefix. recordId is 'num', never 'id'. If the URL came from generate_image, prefer uploadUrl (or fullUrl) over dockerUrl.",
         withAuthParams({
             tableName: z.string().describe("Table name without 'cms_' prefix (e.g., 'productos')"),
             recordId: z.string().describe("Record 'num' (primary key)"),
-            fieldName: z.string().describe("Field name (e.g., 'galeria_imagenes')"),
+            fieldName: z.string().describe("EXACT field name from the schema. MUST match a field with type 'upload' from get_table_schema or get_module_config_vars. Do NOT guess."),
             imageUrl: z.string().describe("URL of the image to upload"),
             alt: z.string().optional().describe("Alt text for the image (optional)"),
         }),
diff --git a/mcp-server/tools/tables/schema.js b/mcp-server/tools/tables/schema.js
index f2cb06e..7b4d65b 100644
--- a/mcp-server/tools/tables/schema.js
+++ b/mcp-server/tools/tables/schema.js
@@ -12,9 +12,10 @@ export function registerGetTableSchemaTool(server) {
         withAuthParams({
             tableName: z.string().describe("Table name without cms_ prefix"),
             minimal: z.boolean().optional().describe("If true, returns only field names + types + labels"),
+            filterFields: z.string().optional().describe("Filter field names containing these terms (pipe-separated, e.g. 'galeria|foto|image'). Only matching fields are returned. Useful to find the exact field name without loading the full schema."),
         }),
         { readOnlyHint: true, destructiveHint: false },
-        withAuth(async ({ tableName, minimal }, extra) => {
+        withAuth(async ({ tableName, minimal, filterFields }, extra) => {
             try {
                 const validationError = validateRequired({ tableName }, ['tableName'], 'get_table_schema');
                 if (validationError) return validationError;
@@ -45,18 +46,41 @@ export function registerGetTableSchemaTool(server) {
 
                 const parsed = parseIniSchema(iniContent);
 
-                if (minimal) {
-                    const minimalSchema = { menuName: parsed.menuName, menuType: parsed.menuType, enlace: parsed.enlace };
-                    const minFields = {};
-                    for (const [key, value] of Object.entries(parsed.fields || {})) {
-                        minFields[key] = { type: value.type };
-                        if (value.label) minFields[key].label = value.label;
+                // Filtrar campos si se pasa filterFields (pipe-separated terms)
+                let fields = parsed.fields || {};
+                if (filterFields) {
+                    const terms = filterFields.toLowerCase().split("|").map(t => t.trim()).filter(Boolean);
+                    const filtered = {};
+                    for (const [key, value] of Object.entries(fields)) {
+                        const keyLower = key.toLowerCase();
+                        const labelLower = (value.label || "").toLowerCase();
+                        if (terms.some(t => keyLower.includes(t) || labelLower.includes(t))) {
+                            filtered[key] = value;
+                        }
+                    }
+                    fields = filtered;
+                    if (Object.keys(fields).length === 0) {
+                        return { content: [{ type: "text", text: JSON.stringify({
+                            tableName, filterFields, matches: 0,
+                            message: "No fields matching filter. Try broader terms or omit filterFields to see all.",
+                        }, null, 2) }] };
                     }
-                    minimalSchema.fields = minFields;
-                    return { content: [{ type: "text", text: JSON.stringify(minimalSchema, null, 2) }] };
                 }
 
-                return { content: [{ type: "text", text: JSON.stringify(parsed, null, 2) }] };
+                if (minimal || filterFields) {
+                    const result = { menuName: parsed.menuName, tableName };
+                    const minFields = {};
+                    for (const [key, value] of Object.entries(fields)) {
+                        minFields[key] = { type: value.type };
+                        if (value.label) minFields[key].label = value.label;
+                        if (value.maxUploads) minFields[key].maxUploads = value.maxUploads;
+                    }
+                    result.fields = minFields;
+                    if (filterFields) result.filterFields = filterFields;
+                    return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }] };
+                }
+
+                return { content: [{ type: "text", text: JSON.stringify({ ...parsed, fields }, null, 2) }] };
             } catch (error) {
                 return handleToolError(error, 'get_table_schema', { tableName });
             }