feat(editor): Improve how we show default Agent prompt and Memory session parameters (#11491)

packages/@n8n/nodes-langchain/nodes/agents/Agent/Agent.node.ts

@@ -21,7 +21,7 @@ import { sqlAgentAgentProperties } from './agents/SqlAgent/description';
 import { sqlAgentAgentExecute } from './agents/SqlAgent/execute';
 import { toolsAgentProperties } from './agents/ToolsAgent/description';
 import { toolsAgentExecute } from './agents/ToolsAgent/execute';
-import { promptTypeOptions, textInput } from '../../../utils/descriptions';
+import { promptTypeOptions, textFromPreviousNode, textInput } from '../../../utils/descriptions';
 
 // Function used in the inputs expression to figure out which inputs to
 // display based on the agent type
@@ -341,6 +341,17 @@ export class Agent implements INodeType {
 					},
 				},
 			},
+			{
+				...textFromPreviousNode,
+				displayOptions: {
+					show: { promptType: ['auto'], '@version': [{ _cnd: { gte: 1.7 } }] },
+					// SQL Agent has data source and credentials parameters so we need to include this input there manually
+					// to preserve the order
+					hide: {
+						agent: ['sqlAgent'],
+					},
+				},
+			},
 			{
 				...textInput,
 				displayOptions: {

packages/@n8n/nodes-langchain/nodes/agents/Agent/agents/SqlAgent/description.ts

@@ -1,6 +1,11 @@
 import type { INodeProperties } from 'n8n-workflow';
-import { promptTypeOptions, textInput } from '../../../../../utils/descriptions';
+
 import { SQL_PREFIX, SQL_SUFFIX } from './other/prompts';
+import {
+	promptTypeOptions,
+	textFromPreviousNode,
+	textInput,
+} from '../../../../../utils/descriptions';
 
 const dataSourceOptions: INodeProperties = {
 	displayName: 'Data Source',
@@ -114,6 +119,12 @@ export const sqlAgentAgentProperties: INodeProperties[] = [
 			},
 		},
 	},
+	{
+		...textFromPreviousNode,
+		displayOptions: {
+			show: { promptType: ['auto'], '@version': [{ _cnd: { gte: 1.7 } }], agent: ['sqlAgent'] },
+		},
+	},
 	{
 		...textInput,
 		displayOptions: {

packages/@n8n/nodes-langchain/nodes/agents/Agent/agents/SqlAgent/execute.ts

@@ -1,3 +1,9 @@
+import type { BaseChatMemory } from '@langchain/community/memory/chat_memory';
+import type { BaseLanguageModel } from '@langchain/core/language_models/base';
+import type { DataSource } from '@n8n/typeorm';
+import type { SqlCreatePromptArgs } from 'langchain/agents/toolkits/sql';
+import { SqlToolkit, createSqlAgent } from 'langchain/agents/toolkits/sql';
+import { SqlDatabase } from 'langchain/sql_db';
 import {
 	type IExecuteFunctions,
 	type INodeExecutionData,
@@ -6,19 +12,12 @@ import {
 	type IDataObject,
 } from 'n8n-workflow';
 
-import { SqlDatabase } from 'langchain/sql_db';
+import { getMysqlDataSource } from './other/handlers/mysql';
-import type { SqlCreatePromptArgs } from 'langchain/agents/toolkits/sql';
+import { getPostgresDataSource } from './other/handlers/postgres';
-import { SqlToolkit, createSqlAgent } from 'langchain/agents/toolkits/sql';
+import { getSqliteDataSource } from './other/handlers/sqlite';
-import type { BaseLanguageModel } from '@langchain/core/language_models/base';
+import { SQL_PREFIX, SQL_SUFFIX } from './other/prompts';
-import type { BaseChatMemory } from '@langchain/community/memory/chat_memory';
-import type { DataSource } from '@n8n/typeorm';
-
 import { getPromptInputByType, serializeChatHistory } from '../../../../../utils/helpers';
 import { getTracingConfig } from '../../../../../utils/tracing';
-import { getSqliteDataSource } from './other/handlers/sqlite';
-import { getPostgresDataSource } from './other/handlers/postgres';
-import { SQL_PREFIX, SQL_SUFFIX } from './other/prompts';
-import { getMysqlDataSource } from './other/handlers/mysql';
 
 const parseTablesString = (tablesString: string) =>
 	tablesString

packages/@n8n/nodes-langchain/nodes/agents/OpenAiAssistant/OpenAiAssistant.node.ts

@@ -1,5 +1,5 @@
 import { AgentExecutor } from 'langchain/agents';
-import { OpenAI as OpenAIClient } from 'openai';
+import type { OpenAIToolType } from 'langchain/dist/experimental/openai_assistant/schema';
 import { OpenAIAssistantRunnable } from 'langchain/experimental/openai_assistant';
 import { NodeConnectionType, NodeOperationError } from 'n8n-workflow';
 import type {
@@ -8,10 +8,11 @@ import type {
 	INodeType,
 	INodeTypeDescription,
 } from 'n8n-workflow';
-import type { OpenAIToolType } from 'langchain/dist/experimental/openai_assistant/schema';
+import { OpenAI as OpenAIClient } from 'openai';
+
+import { formatToOpenAIAssistantTool } from './utils';
 import { getConnectedTools } from '../../../utils/helpers';
 import { getTracingConfig } from '../../../utils/tracing';
-import { formatToOpenAIAssistantTool } from './utils';
 
 export class OpenAiAssistant implements INodeType {
 	description: INodeTypeDescription = {

packages/@n8n/nodes-langchain/nodes/chains/ChainLLM/ChainLlm.node.ts

@@ -36,6 +36,7 @@ import {
 	getCustomErrorMessage as getCustomOpenAiErrorMessage,
 	isOpenAiError,
 } from '../../vendors/OpenAi/helpers/error-handling';
+import { promptTypeOptions, textFromPreviousNode } from '../../../utils/descriptions';
 
 interface MessagesTemplate {
 	type: string;
@@ -253,7 +254,7 @@ export class ChainLlm implements INodeType {
 		name: 'chainLlm',
 		icon: 'fa:link',
 		group: ['transform'],
-		version: [1, 1.1, 1.2, 1.3, 1.4],
+		version: [1, 1.1, 1.2, 1.3, 1.4, 1.5],
 		description: 'A simple chain to prompt a large language model',
 		defaults: {
 			name: 'Basic LLM Chain',
@@ -315,30 +316,16 @@ export class ChainLlm implements INodeType {
 				},
 			},
 			{
-				displayName: 'Prompt',
+				...promptTypeOptions,
-				name: 'promptType',
-				type: 'options',
-				options: [
-					{
-						// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-						name: 'Take from previous node automatically',
-						value: 'auto',
-						description: 'Looks for an input field called chatInput',
-					},
-					{
-						// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-						name: 'Define below',
-						value: 'define',
-						description:
-							'Use an expression to reference data in previous nodes or enter static text',
-					},
-				],
 				displayOptions: {
 					hide: {
 						'@version': [1, 1.1, 1.2, 1.3],
 					},
 				},
-				default: 'auto',
+			},
+			{
+				...textFromPreviousNode,
+				displayOptions: { show: { promptType: ['auto'], '@version': [{ _cnd: { gte: 1.5 } }] } },
 			},
 			{
 				displayName: 'Text',

packages/@n8n/nodes-langchain/nodes/chains/ChainRetrievalQA/ChainRetrievalQa.node.ts

@@ -1,3 +1,12 @@
+import type { BaseLanguageModel } from '@langchain/core/language_models/base';
+import {
+	ChatPromptTemplate,
+	SystemMessagePromptTemplate,
+	HumanMessagePromptTemplate,
+	PromptTemplate,
+} from '@langchain/core/prompts';
+import type { BaseRetriever } from '@langchain/core/retrievers';
+import { RetrievalQAChain } from 'langchain/chains';
 import {
 	NodeConnectionType,
 	type IExecuteFunctions,
@@ -7,17 +16,9 @@ import {
 	NodeOperationError,
 } from 'n8n-workflow';
 
-import { RetrievalQAChain } from 'langchain/chains';
+import { promptTypeOptions, textFromPreviousNode } from '../../../utils/descriptions';
-import type { BaseLanguageModel } from '@langchain/core/language_models/base';
-import type { BaseRetriever } from '@langchain/core/retrievers';
-import {
-	ChatPromptTemplate,
-	SystemMessagePromptTemplate,
-	HumanMessagePromptTemplate,
-	PromptTemplate,
-} from '@langchain/core/prompts';
-import { getTemplateNoticeField } from '../../../utils/sharedFields';
 import { getPromptInputByType, isChatInstance } from '../../../utils/helpers';
+import { getTemplateNoticeField } from '../../../utils/sharedFields';
 import { getTracingConfig } from '../../../utils/tracing';
 
 const SYSTEM_PROMPT_TEMPLATE = `Use the following pieces of context to answer the users question.
@@ -31,7 +32,7 @@ export class ChainRetrievalQa implements INodeType {
 		name: 'chainRetrievalQa',
 		icon: 'fa:link',
 		group: ['transform'],
-		version: [1, 1.1, 1.2, 1.3],
+		version: [1, 1.1, 1.2, 1.3, 1.4],
 		description: 'Answer questions about retrieved documents',
 		defaults: {
 			name: 'Question and Answer Chain',
@@ -108,30 +109,16 @@ export class ChainRetrievalQa implements INodeType {
 				},
 			},
 			{
-				displayName: 'Prompt',
+				...promptTypeOptions,
-				name: 'promptType',
-				type: 'options',
-				options: [
-					{
-						// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-						name: 'Take from previous node automatically',
-						value: 'auto',
-						description: 'Looks for an input field called chatInput',
-					},
-					{
-						// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-						name: 'Define below',
-						value: 'define',
-						description:
-							'Use an expression to reference data in previous nodes or enter static text',
-					},
-				],
 				displayOptions: {
 					hide: {
 						'@version': [{ _cnd: { lte: 1.2 } }],
 					},
 				},
-				default: 'auto',
+			},
+			{
+				...textFromPreviousNode,
+				displayOptions: { show: { promptType: ['auto'], '@version': [{ _cnd: { gte: 1.4 } }] } },
 			},
 			{
 				displayName: 'Text',

packages/@n8n/nodes-langchain/nodes/memory/MemoryBufferWindow/MemoryBufferWindow.node.ts

@@ -1,4 +1,6 @@
 /* eslint-disable n8n-nodes-base/node-dirname-against-convention */
+import type { BufferWindowMemoryInput } from 'langchain/memory';
+import { BufferWindowMemory } from 'langchain/memory';
 import {
 	NodeConnectionType,
 	type INodeType,
@@ -6,12 +8,16 @@ import {
 	type ISupplyDataFunctions,
 	type SupplyData,
 } from 'n8n-workflow';
-import type { BufferWindowMemoryInput } from 'langchain/memory';
+
-import { BufferWindowMemory } from 'langchain/memory';
+import { getSessionId } from '../../../utils/helpers';
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
-import { sessionIdOption, sessionKeyProperty, contextWindowLengthProperty } from '../descriptions';
+import {
-import { getSessionId } from '../../../utils/helpers';
+	sessionIdOption,
+	sessionKeyProperty,
+	contextWindowLengthProperty,
+	expressionSessionKeyProperty,
+} from '../descriptions';
 
 class MemoryChatBufferSingleton {
 	private static instance: MemoryChatBufferSingleton;
@@ -72,7 +78,7 @@ export class MemoryBufferWindow implements INodeType {
 		name: 'memoryBufferWindow',
 		icon: 'fa:database',
 		group: ['transform'],
-		version: [1, 1.1, 1.2],
+		version: [1, 1.1, 1.2, 1.3],
 		description: 'Stores in n8n memory, so no credentials required',
 		defaults: {
 			name: 'Window Buffer Memory',
@@ -129,6 +135,7 @@ export class MemoryBufferWindow implements INodeType {
 					},
 				},
 			},
+			expressionSessionKeyProperty(1.3),
 			sessionKeyProperty,
 			contextWindowLengthProperty,
 		],

packages/@n8n/nodes-langchain/nodes/memory/MemoryMotorhead/MemoryMotorhead.node.ts

@@ -1,4 +1,5 @@
 /* eslint-disable n8n-nodes-base/node-dirname-against-convention */
+import { MotorheadMemory } from '@langchain/community/memory/motorhead_memory';
 import {
 	NodeConnectionType,
 	type INodeType,
@@ -7,11 +8,10 @@ import {
 	type SupplyData,
 } from 'n8n-workflow';
 
-import { MotorheadMemory } from '@langchain/community/memory/motorhead_memory';
+import { getSessionId } from '../../../utils/helpers';
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
-import { sessionIdOption, sessionKeyProperty } from '../descriptions';
+import { expressionSessionKeyProperty, sessionIdOption, sessionKeyProperty } from '../descriptions';
-import { getSessionId } from '../../../utils/helpers';
 
 export class MemoryMotorhead implements INodeType {
 	description: INodeTypeDescription = {
@@ -19,7 +19,7 @@ export class MemoryMotorhead implements INodeType {
 		name: 'memoryMotorhead',
 		icon: 'fa:file-export',
 		group: ['transform'],
-		version: [1, 1.1, 1.2],
+		version: [1, 1.1, 1.2, 1.3],
 		description: 'Use Motorhead Memory',
 		defaults: {
 			name: 'Motorhead',
@@ -82,6 +82,7 @@ export class MemoryMotorhead implements INodeType {
 					},
 				},
 			},
+			expressionSessionKeyProperty(1.3),
 			sessionKeyProperty,
 		],
 	};

packages/@n8n/nodes-langchain/nodes/memory/MemoryPostgresChat/MemoryPostgresChat.node.ts

@@ -1,4 +1,9 @@
 /* eslint-disable n8n-nodes-base/node-dirname-against-convention */
+import { PostgresChatMessageHistory } from '@langchain/community/stores/message/postgres';
+import { BufferMemory, BufferWindowMemory } from 'langchain/memory';
+import type { PostgresNodeCredentials } from 'n8n-nodes-base/dist/nodes/Postgres/v2/helpers/interfaces';
+import { postgresConnectionTest } from 'n8n-nodes-base/dist/nodes/Postgres/v2/methods/credentialTest';
+import { configurePostgres } from 'n8n-nodes-base/dist/nodes/Postgres/v2/transport';
 import type {
 	ISupplyDataFunctions,
 	INodeType,
@@ -6,16 +11,17 @@ import type {
 	SupplyData,
 } from 'n8n-workflow';
 import { NodeConnectionType } from 'n8n-workflow';
-import { BufferMemory, BufferWindowMemory } from 'langchain/memory';
-import { PostgresChatMessageHistory } from '@langchain/community/stores/message/postgres';
 import type pg from 'pg';
-import { configurePostgres } from 'n8n-nodes-base/dist/nodes/Postgres/v2/transport';
+
-import type { PostgresNodeCredentials } from 'n8n-nodes-base/dist/nodes/Postgres/v2/helpers/interfaces';
+import { getSessionId } from '../../../utils/helpers';
-import { postgresConnectionTest } from 'n8n-nodes-base/dist/nodes/Postgres/v2/methods/credentialTest';
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
-import { sessionIdOption, sessionKeyProperty, contextWindowLengthProperty } from '../descriptions';
+import {
-import { getSessionId } from '../../../utils/helpers';
+	sessionIdOption,
+	sessionKeyProperty,
+	contextWindowLengthProperty,
+	expressionSessionKeyProperty,
+} from '../descriptions';
 
 export class MemoryPostgresChat implements INodeType {
 	description: INodeTypeDescription = {
@@ -23,7 +29,7 @@ export class MemoryPostgresChat implements INodeType {
 		name: 'memoryPostgresChat',
 		icon: 'file:postgres.svg',
 		group: ['transform'],
-		version: [1, 1.1],
+		version: [1, 1.1, 1.2, 1.3],
 		description: 'Stores the chat history in Postgres table.',
 		defaults: {
 			name: 'Postgres Chat Memory',
@@ -56,6 +62,7 @@ export class MemoryPostgresChat implements INodeType {
 		properties: [
 			getConnectionHintNoticeField([NodeConnectionType.AiAgent]),
 			sessionIdOption,
+			expressionSessionKeyProperty(1.2),
 			sessionKeyProperty,
 			{
 				displayName: 'Table Name',

packages/@n8n/nodes-langchain/nodes/memory/MemoryRedisChat/MemoryRedisChat.node.ts

@@ -1,4 +1,7 @@
 /* eslint-disable n8n-nodes-base/node-dirname-against-convention */
+import type { RedisChatMessageHistoryInput } from '@langchain/redis';
+import { RedisChatMessageHistory } from '@langchain/redis';
+import { BufferMemory, BufferWindowMemory } from 'langchain/memory';
 import {
 	NodeOperationError,
 	type INodeType,
@@ -7,15 +10,18 @@ import {
 	type SupplyData,
 	NodeConnectionType,
 } from 'n8n-workflow';
-import { BufferMemory, BufferWindowMemory } from 'langchain/memory';
-import type { RedisChatMessageHistoryInput } from '@langchain/redis';
-import { RedisChatMessageHistory } from '@langchain/redis';
 import type { RedisClientOptions } from 'redis';
 import { createClient } from 'redis';
+
+import { getSessionId } from '../../../utils/helpers';
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
-import { sessionIdOption, sessionKeyProperty, contextWindowLengthProperty } from '../descriptions';
+import {
-import { getSessionId } from '../../../utils/helpers';
+	sessionIdOption,
+	sessionKeyProperty,
+	contextWindowLengthProperty,
+	expressionSessionKeyProperty,
+} from '../descriptions';
 
 export class MemoryRedisChat implements INodeType {
 	description: INodeTypeDescription = {
@@ -23,7 +29,7 @@ export class MemoryRedisChat implements INodeType {
 		name: 'memoryRedisChat',
 		icon: 'file:redis.svg',
 		group: ['transform'],
-		version: [1, 1.1, 1.2, 1.3],
+		version: [1, 1.1, 1.2, 1.3, 1.4],
 		description: 'Stores the chat history in Redis.',
 		defaults: {
 			name: 'Redis Chat Memory',
@@ -86,6 +92,7 @@ export class MemoryRedisChat implements INodeType {
 					},
 				},
 			},
+			expressionSessionKeyProperty(1.4),
 			sessionKeyProperty,
 			{
 				displayName: 'Session Time To Live',

packages/@n8n/nodes-langchain/nodes/memory/MemoryXata/MemoryXata.node.ts

@@ -1,4 +1,7 @@
 /* eslint-disable n8n-nodes-base/node-dirname-against-convention */
+import { XataChatMessageHistory } from '@langchain/community/stores/message/xata';
+import { BaseClient } from '@xata.io/client';
+import { BufferMemory, BufferWindowMemory } from 'langchain/memory';
 import { NodeConnectionType, NodeOperationError } from 'n8n-workflow';
 import type {
 	ISupplyDataFunctions,
@@ -6,13 +9,16 @@ import type {
 	INodeTypeDescription,
 	SupplyData,
 } from 'n8n-workflow';
-import { XataChatMessageHistory } from '@langchain/community/stores/message/xata';
+
-import { BufferMemory, BufferWindowMemory } from 'langchain/memory';
+import { getSessionId } from '../../../utils/helpers';
-import { BaseClient } from '@xata.io/client';
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
-import { sessionIdOption, sessionKeyProperty, contextWindowLengthProperty } from '../descriptions';
+import {
-import { getSessionId } from '../../../utils/helpers';
+	sessionIdOption,
+	sessionKeyProperty,
+	contextWindowLengthProperty,
+	expressionSessionKeyProperty,
+} from '../descriptions';
 
 export class MemoryXata implements INodeType {
 	description: INodeTypeDescription = {
@@ -20,7 +26,7 @@ export class MemoryXata implements INodeType {
 		name: 'memoryXata',
 		icon: 'file:xata.svg',
 		group: ['transform'],
-		version: [1, 1.1, 1.2, 1.3],
+		version: [1, 1.1, 1.2, 1.3, 1.4],
 		description: 'Use Xata Memory',
 		defaults: {
 			name: 'Xata',
@@ -86,6 +92,7 @@ export class MemoryXata implements INodeType {
 				},
 			},
 			sessionKeyProperty,
+			expressionSessionKeyProperty(1.4),
 			{
 				...contextWindowLengthProperty,
 				displayOptions: { hide: { '@version': [{ _cnd: { lt: 1.3 } }] } },

packages/@n8n/nodes-langchain/nodes/memory/MemoryZep/MemoryZep.node.ts

@@ -12,7 +12,7 @@ import { ZepCloudMemory } from '@langchain/community/memory/zep_cloud';
 
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
-import { sessionIdOption, sessionKeyProperty } from '../descriptions';
+import { expressionSessionKeyProperty, sessionIdOption, sessionKeyProperty } from '../descriptions';
 import { getSessionId } from '../../../utils/helpers';
 import type { BaseChatMemory } from '@langchain/community/dist/memory/chat_memory';
 import type { InputValues, MemoryVariables } from '@langchain/core/memory';
@@ -36,7 +36,7 @@ export class MemoryZep implements INodeType {
 		// eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg
 		icon: 'file:zep.png',
 		group: ['transform'],
-		version: [1, 1.1, 1.2],
+		version: [1, 1.1, 1.2, 1.3],
 		description: 'Use Zep Memory',
 		defaults: {
 			name: 'Zep',
@@ -99,6 +99,7 @@ export class MemoryZep implements INodeType {
 					},
 				},
 			},
+			expressionSessionKeyProperty(1.3),
 			sessionKeyProperty,
 		],
 	};

packages/@n8n/nodes-langchain/nodes/memory/descriptions.ts

@@ -21,6 +21,20 @@ export const sessionIdOption: INodeProperties = {
 	default: 'fromInput',
 };
 
+export const expressionSessionKeyProperty = (fromVersion: number): INodeProperties => ({
+	displayName: 'Session Key From Previous Node',
+	name: 'sessionKey',
+	type: 'string',
+	default: '={{ $json.sessionId }}',
+	disabledOptions: { show: { sessionIdType: ['fromInput'] } },
+	displayOptions: {
+		show: {
+			sessionIdType: ['fromInput'],
+			'@version': [{ _cnd: { gte: fromVersion } }],
+		},
+	},
+});
+
 export const sessionKeyProperty: INodeProperties = {
 	displayName: 'Key',
 	name: 'sessionKey',

packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/actions/assistant/message.operation.ts

@@ -18,6 +18,7 @@ import {
 } from 'n8n-workflow';
 import { OpenAI as OpenAIClient } from 'openai';
 
+import { promptTypeOptions, textFromPreviousNode } from '../../../../../utils/descriptions';
 import { getConnectedTools } from '../../../../../utils/helpers';
 import { getTracingConfig } from '../../../../../utils/tracing';
 import { formatToOpenAIAssistantTool } from '../../helpers/utils';
@@ -26,24 +27,18 @@ import { assistantRLC } from '../descriptions';
 const properties: INodeProperties[] = [
 	assistantRLC,
 	{
-		displayName: 'Prompt',
+		...promptTypeOptions,
 		name: 'prompt',
-		type: 'options',
+	},
-		options: [
+	{
-			{
+		...textFromPreviousNode,
-				// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
+		disabledOptions: { show: { prompt: ['auto'] } },
-				name: 'Take from previous node automatically',
+		displayOptions: {
-				value: 'auto',
+			show: {
-				description: 'Looks for an input field called chatInput',
+				prompt: ['auto'],
+				'@version': [{ _cnd: { gte: 1.7 } }],
 			},
-			{
+		},
-				// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-				name: 'Define below',
-				value: 'define',
-				description: 'Use an expression to reference data in previous nodes or enter static text',
-			},
-		],
-		default: 'auto',
 	},
 	{
 		displayName: 'Text',

packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/actions/versionDescription.ts

@@ -77,7 +77,7 @@ export const versionDescription: INodeTypeDescription = {
 	name: 'openAi',
 	icon: { light: 'file:openAi.svg', dark: 'file:openAi.dark.svg' },
 	group: ['transform'],
-	version: [1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6],
+	version: [1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7],
 	subtitle: `={{(${prettifyOperation})($parameter.resource, $parameter.operation)}}`,
 	description: 'Message an assistant or GPT, analyze images, generate audio, etc.',
 	defaults: {

packages/@n8n/nodes-langchain/utils/descriptions.ts

@@ -66,7 +66,7 @@ export const inputSchemaField: INodeProperties = {
 };
 
 export const promptTypeOptions: INodeProperties = {
-	displayName: 'Prompt',
+	displayName: 'Prompt Source',
 	name: 'promptType',
 	type: 'options',
 	options: [
@@ -97,3 +97,15 @@ export const textInput: INodeProperties = {
 		rows: 2,
 	},
 };
+
+export const textFromPreviousNode: INodeProperties = {
+	displayName: 'Text From Previous Node',
+	name: 'text',
+	type: 'string',
+	required: true,
+	default: '={{ $json.chatInput }}',
+	typeOptions: {
+		rows: 2,
+	},
+	disabledOptions: { show: { promptType: ['auto'] } },
+};

packages/editor-ui/src/components/ExpressionEditorModal/ExpressionEditorModalInput.vue

@@ -74,7 +74,7 @@ const { segments, readEditorValue, editor, hasFocus, focus } = useExpressionEdit
 	editorRef: root,
 	editorValue,
 	extensions,
-	isReadOnly: props.isReadOnly,
+	isReadOnly: computed(() => props.isReadOnly),
 	autocompleteTelemetry: { enabled: true, parameterPath: props.path },
 });
 
@@ -110,7 +110,15 @@ defineExpose({ editor });
 </template>
 
 <style lang="scss" module>
-:global(.cm-content) {
+.editor {
-	border-radius: var(--border-radius-base);
+	:global(.cm-content) {
+		border-radius: var(--border-radius-base);
+		&[aria-readonly='true'] {
+			--disabled-fill: var(--color-background-medium);
+			background-color: var(--disabled-fill, var(--color-background-light));
+			color: var(--disabled-color, var(--color-text-base));
+			cursor: not-allowed;
+		}
+	}
 }
 </style>

packages/editor-ui/src/components/InlineExpressionEditor/InlineExpressionEditorInput.vue

@@ -56,6 +56,7 @@ const extensions = computed(() => [
 	infoBoxTooltips(),
 ]);
 const editorValue = ref<string>(removeExpressionPrefix(props.modelValue));
+
 const {
 	editor: editorRef,
 	segments,
@@ -68,7 +69,7 @@ const {
 	editorRef: root,
 	editorValue,
 	extensions,
-	isReadOnly: props.isReadOnly,
+	isReadOnly: computed(() => props.isReadOnly),
 	autocompleteTelemetry: { enabled: true, parameterPath: props.path },
 	additionalData: props.additionalData,
 });
@@ -133,6 +134,17 @@ defineExpose({
 	padding-left: 0;
 }
 :deep(.cm-content) {
+	--disabled-fill: var(--color-background-medium);
 	padding-left: var(--spacing-2xs);
+
+	&[aria-readonly='true'] {
+		background-color: var(--disabled-fill, var(--color-background-light));
+		border-color: var(--disabled-border, var(--border-color-base));
+		color: var(--disabled-color, var(--color-text-base));
+		cursor: not-allowed;
+
+		border-top-left-radius: 0;
+		border-bottom-left-radius: 0;
+	}
 }
 </style>

packages/editor-ui/src/components/InlineExpressionEditor/InlineExpressionEditorOutput.vue

@@ -16,12 +16,14 @@ interface InlineExpressionEditorOutputProps {
 	editorState?: EditorState;
 	selection?: SelectionRange;
 	visible?: boolean;
+	isReadOnly?: boolean;
 }
 
 withDefaults(defineProps<InlineExpressionEditorOutputProps>(), {
 	visible: false,
 	editorState: undefined,
 	selection: undefined,
+	isReadOnly: false,
 	unresolvedExpression: undefined,
 });
 
@@ -51,7 +53,7 @@ onBeforeUnmount(() => {
 			>
 			</ExpressionOutput>
 		</n8n-text>
-		<div :class="$style.footer">
+		<div :class="$style.footer" v-if="!isReadOnly">
 			<InlineExpressionTip
 				:editor-state="editorState"
 				:selection="selection"

packages/editor-ui/src/components/ParameterInput.vue

@@ -983,7 +983,7 @@ watch(remoteParameterOptionsLoading, () => {
 
 // Focus input field when changing from fixed value to expression
 watch(isModelValueExpression, async (isExpression, wasExpression) => {
-	if (isExpression && !wasExpression) {
+	if (!props.isReadOnly && isExpression && !wasExpression) {
 		await nextTick();
 		inputField.value?.focus();
 	}
@@ -1497,7 +1497,7 @@ onUpdated(async () => {
 				:disabled="isReadOnly"
 				@update:model-value="valueChanged"
 			/>
-			<div v-if="showDragnDropTip" :class="$style.tip">
+			<div v-if="!isReadOnly && showDragnDropTip" :class="$style.tip">
 				<InlineExpressionTip />
 			</div>
 		</div>

packages/editor-ui/src/components/ParameterInputFull.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, ref } from 'vue';
+import { computed, ref, watch } from 'vue';
 import type { IUpdateInformation } from '@/Interface';
 
 import DraggableTarget from '@/components/DraggableTarget.vue';
@@ -189,6 +189,16 @@ function onDrop(newParamValue: string) {
 		forceShowExpression.value = false;
 	}, 200);
 }
+
+// When switching to read-only mode, reset the value to the default value
+watch(
+	() => props.isReadOnly,
+	(isReadOnly) => {
+		if (isReadOnly) {
+			valueChanged({ name: props.path, value: props.parameter.default });
+		}
+	},
+);
 </script>
 
 <template>

packages/editor-ui/src/components/ParameterInputList.vue

@@ -322,7 +322,10 @@ function mustHideDuringCustomApiCall(
 	return !MUST_REMAIN_VISIBLE.includes(parameter.name);
 }
 
-function displayNodeParameter(parameter: INodeProperties): boolean {
+function displayNodeParameter(
+	parameter: INodeProperties,
+	displayKey: 'displayOptions' | 'disabledOptions' = 'displayOptions',
+): boolean {
 	if (parameter.type === 'hidden') {
 		return false;
 	}
@@ -343,7 +346,7 @@ function displayNodeParameter(parameter: INodeProperties): boolean {
 		return false;
 	}
 
-	if (parameter.displayOptions === undefined) {
+	if (parameter[displayKey] === undefined) {
 		// If it is not defined no need to do a proper check
 		return true;
 	}
@@ -402,13 +405,19 @@ function displayNodeParameter(parameter: INodeProperties): boolean {
 		if (props.path) {
 			rawValues = deepCopy(props.nodeValues);
 			set(rawValues, props.path, nodeValues);
-			return nodeHelpers.displayParameter(rawValues, parameter, props.path, node.value);
+			return nodeHelpers.displayParameter(rawValues, parameter, props.path, node.value, displayKey);
 		} else {
-			return nodeHelpers.displayParameter(nodeValues, parameter, '', node.value);
+			return nodeHelpers.displayParameter(nodeValues, parameter, '', node.value, displayKey);
 		}
 	}
 
-	return nodeHelpers.displayParameter(props.nodeValues, parameter, props.path, node.value);
+	return nodeHelpers.displayParameter(
+		props.nodeValues,
+		parameter,
+		props.path,
+		node.value,
+		displayKey,
+	);
 }
 
 function valueChanged(parameterData: IUpdateInformation): void {
@@ -620,7 +629,10 @@ function getParameterValue<T extends NodeParameterValueType = NodeParameterValue
 					:value="getParameterValue(parameter.name)"
 					:display-options="shouldShowOptions(parameter)"
 					:path="getPath(parameter.name)"
-					:is-read-only="isReadOnly"
+					:is-read-only="
+						isReadOnly ||
+						(parameter.disabledOptions && displayNodeParameter(parameter, 'disabledOptions'))
+					"
 					:hide-label="false"
 					:node-values="nodeValues"
 					@update="valueChanged"

packages/editor-ui/src/components/ParameterOptions.vue

@@ -39,7 +39,7 @@ const isDefault = computed(() => props.parameter.default === props.value);
 const isValueAnExpression = computed(() => isValueExpression(props.parameter, props.value));
 const isHtmlEditor = computed(() => getArgument('editor') === 'htmlEditor');
 const shouldShowExpressionSelector = computed(
-	() => !props.parameter.noDataExpression && props.showExpressionSelector,
+	() => !props.parameter.noDataExpression && props.showExpressionSelector && !props.isReadOnly,
 );
 const shouldShowOptions = computed(() => {
 	if (props.isReadOnly) {

packages/editor-ui/src/composables/useNodeHelpers.ts

@@ -120,8 +120,9 @@ export function useNodeHelpers() {
 		parameter: INodeProperties | INodeCredentialDescription,
 		path: string,
 		node: INodeUi | null,
+		displayKey: 'displayOptions' | 'disabledOptions' = 'displayOptions',
 	) {
-		return NodeHelpers.displayParameterPath(nodeValues, parameter, path, node);
+		return NodeHelpers.displayParameterPath(nodeValues, parameter, path, node, displayKey);
 	}
 
 	function refreshNodeIssues(): void {

packages/workflow/src/Interfaces.ts

@@ -1417,6 +1417,7 @@ export interface INodeProperties {
 	default: NodeParameterValueType;
 	description?: string;
 	hint?: string;
+	disabledOptions?: IDisplayOptions;
 	displayOptions?: IDisplayOptions;
 	options?: Array<INodePropertyOptions | INodeProperties | INodePropertyCollection>;
 	placeholder?: string;
@@ -1657,6 +1658,7 @@ export interface INodeCredentialDescription {
 	name: string;
 	required?: boolean;
 	displayName?: string;
+	disabledOptions?: ICredentialsDisplayOptions;
 	displayOptions?: ICredentialsDisplayOptions;
 	testedBy?: ICredentialTestRequest | string; // Name of a function inside `loadOptions.credentialTest`
 }

packages/workflow/src/NodeHelpers.ts

@@ -639,12 +639,13 @@ export function displayParameter(
 	parameter: INodeProperties | INodeCredentialDescription,
 	node: Pick<INode, 'typeVersion'> | null, // Allow null as it does also get used by credentials and they do not have versioning yet
 	nodeValuesRoot?: INodeParameters,
+	displayKey: 'displayOptions' | 'disabledOptions' = 'displayOptions',
 ) {
-	if (!parameter.displayOptions) {
+	if (!parameter[displayKey]) {
 		return true;
 	}
 
-	const { show, hide } = parameter.displayOptions;
+	const { show, hide } = parameter[displayKey];
 
 	nodeValuesRoot = nodeValuesRoot || nodeValues;
 
@@ -691,6 +692,7 @@ export function displayParameterPath(
 	parameter: INodeProperties | INodeCredentialDescription,
 	path: string,
 	node: Pick<INode, 'typeVersion'> | null,
+	displayKey: 'displayOptions' | 'disabledOptions' = 'displayOptions',
 ) {
 	let resolvedNodeValues = nodeValues;
 	if (path !== '') {
@@ -703,7 +705,7 @@ export function displayParameterPath(
 		nodeValuesRoot = get(nodeValues, 'parameters') as INodeParameters;
 	}
 
-	return displayParameter(resolvedNodeValues, parameter, node, nodeValuesRoot);
+	return displayParameter(resolvedNodeValues, parameter, node, nodeValuesRoot, displayKey);
 }
 
 /**