n8n automations part 5

Custom LangChain agent written in JavaScript.txt

@@ -0,0 +1,290 @@
+{
+"id": "q2MJWAqpKF2BCJkq",
+"meta": {
+"instanceId": "021d3c82ba2d3bc090cbf4fc81c9312668bcc34297e022bb3438c5c88a43a5ff"
+},
+"name": "LangChain - Example - Code Node Example",
+"tags": [
+{
+"id": "snf16n0p2UrGP838",
+"name": "LangChain - Example",
+"createdAt": "2023-09-25T16:21:55.962Z",
+"updatedAt": "2023-09-25T16:21:55.962Z"
+}
+],
+"nodes": [
+{
+"id": "ad1a920e-1048-4b58-9c4a-a0469a1f189d",
+"name": "OpenAI",
+"type": "@n8n/n8n-nodes-langchain.lmOpenAi",
+"position": [
+900,
+628
+],
+"parameters": {
+"options": {}
+},
+"credentials": {
+"openAiApi": {
+"id": "4jRB4A20cPycBqP5",
+"name": "OpenAI account - n8n"
+}
+},
+"typeVersion": 1
+},
+{
+"id": "7dd04ecd-f169-455c-9c90-140140e37542",
+"name": "Sticky Note",
+"type": "n8n-nodes-base.stickyNote",
+"position": [
+800,
+340
+],
+"parameters": {
+"width": 432,
+"height": 237,
+"content": "## Self-coded LLM Chain Node"
+},
+"typeVersion": 1
+},
+{
+"id": "05ad7d68-5dc8-42f2-8274-fcb5bdeb68cb",
+"name": "When clicking \"Execute Workflow\"",
+"type": "n8n-nodes-base.manualTrigger",
+"position": [
+280,
+428
+],
+"parameters": {},
+"typeVersion": 1
+},
+{
+"id": "39e2fd34-3261-44a1-aa55-96f169d55aad",
+"name": "Set",
+"type": "n8n-nodes-base.set",
+"position": [
+620,
+428
+],
+"parameters": {
+"values": {
+"string": [
+{
+"name": "input",
+"value": "Tell me a joke"
+}
+]
+},
+"options": {}
+},
+"typeVersion": 2
+},
+{
+"id": "42a3184c-0c62-4e79-9220-7a93e313317e",
+"name": "Set1",
+"type": "n8n-nodes-base.set",
+"position": [
+620,
+820
+],
+"parameters": {
+"values": {
+"string": [
+{
+"name": "input",
+"value": "What year was Einstein born?"
+}
+]
+},
+"options": {}
+},
+"typeVersion": 2
+},
+{
+"id": "4e2af29d-7fc4-484b-8028-1b9a84d60172",
+"name": "Chat OpenAI",
+"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
+"position": [
+731,
+1108
+],
+"parameters": {
+"options": {}
+},
+"credentials": {
+"openAiApi": {
+"id": "4jRB4A20cPycBqP5",
+"name": "OpenAI account - n8n"
+}
+},
+"typeVersion": 1
+},
+{
+"id": "334e9176-3a18-4838-84cb-70e8154f1a30",
+"name": "Sticky Note1",
+"type": "n8n-nodes-base.stickyNote",
+"position": [
+880,
+1028
+],
+"parameters": {
+"width": 320.2172923777021,
+"height": 231,
+"content": "## Self-coded Tool Node"
+},
+"typeVersion": 1
+},
+{
+"id": "05e0d5c6-df18-42ba-99b6-a2b65633a14d",
+"name": "Custom - Wikipedia",
+"type": "@n8n/n8n-nodes-langchain.code",
+"position": [
+971,
+1108
+],
+"parameters": {
+"code": {
+"supplyData": {
+"code": "console.log('Custom Wikipedia Node runs');\nconst { WikipediaQueryRun } = require('langchain/tools');\nreturn new WikipediaQueryRun();"
+}
+},
+"outputs": {
+"output": [
+{
+"type": "ai_tool"
+}
+]
+}
+},
+"typeVersion": 1
+},
+{
+"id": "9c729e9a-f173-430c-8bcd-74101b614891",
+"name": "Custom - LLM Chain Node",
+"type": "@n8n/n8n-nodes-langchain.code",
+"position": [
+880,
+428
+],
+"parameters": {
+"code": {
+"execute": {
+"code": "const { PromptTemplate } = require('langchain/prompts');\n\nconst query = $input.item.json.input;\nconst prompt = PromptTemplate.fromTemplate(query);\nconst llm = await this.getInputConnectionData('ai_languageModel', 0);\nlet chain = prompt.pipe(llm);\nconst output = await chain.invoke();\nreturn [ {json: { output } } ];"
+}
+},
+"inputs": {
+"input": [
+{
+"type": "main"
+},
+{
+"type": "ai_languageModel",
+"required": true,
+"maxConnections": 1
+}
+]
+},
+"outputs": {
+"output": [
+{
+"type": "main"
+}
+]
+}
+},
+"typeVersion": 1
+},
+{
+"id": "6427bbf0-49a6-4810-9744-87d88151e914",
+"name": "Agent",
+"type": "@n8n/n8n-nodes-langchain.agent",
+"position": [
+880,
+820
+],
+"parameters": {
+"options": {}
+},
+"typeVersion": 1
+}
+],
+"active": false,
+"pinData": {},
+"settings": {
+"executionOrder": "v1"
+},
+"versionId": "e14a709d-08fe-4ed7-903a-fb2bae80b28a",
+"connections": {
+"Set": {
+"main": [
+[
+{
+"node": "Custom - LLM Chain Node",
+"type": "main",
+"index": 0
+}
+]
+]
+},
+"Set1": {
+"main": [
+[
+{
+"node": "Agent",
+"type": "main",
+"index": 0
+}
+]
+]
+},
+"OpenAI": {
+"ai_languageModel": [
+[
+{
+"node": "Custom - LLM Chain Node",
+"type": "ai_languageModel",
+"index": 0
+}
+]
+]
+},
+"Chat OpenAI": {
+"ai_languageModel": [
+[
+{
+"node": "Agent",
+"type": "ai_languageModel",
+"index": 0
+}
+]
+]
+},
+"Custom - Wikipedia": {
+"ai_tool": [
+[
+{
+"node": "Agent",
+"type": "ai_tool",
+"index": 0
+}
+]
+]
+},
+"When clicking \"Execute Workflow\"": {
+"main": [
+[
+{
+"node": "Set",
+"type": "main",
+"index": 0
+},
+{
+"node": "Set1",
+"type": "main",
+"index": 0
+}
+]
+]
+}
+}
+}