The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"name": "MCP Client - SeqBot",
"nodes": [
{
"parameters": {
"public": true,
"initialMessages": "Hi there! \ud83d\udc4b\nMy name is SeqBot. How can I assist you today?",
"options": {
"title": "SeqBot"
}
},
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"typeVersion": 1.3,
"position": [
-720,
-64
],
"id": "eae485b3-b38f-49b3-9a87-77f163c85c92",
"name": "When chat message received"
},
{
"parameters": {
"endpointUrl": "https://tecval.app.n8n.cloud/mcp/e7770090-9193-49e3-a613-f13b1874b952",
"options": {
"timeout": 120000
}
},
"type": "@n8n/n8n-nodes-langchain.mcpClientTool",
"typeVersion": 1.1,
"position": [
-256,
192
],
"id": "20332ce9-c630-417e-a1b9-e03234792a22",
"name": "MCP Client"
},
{
"parameters": {
"promptType": "define",
"text": "={{$json.chatInput}}",
"options": {
"systemMessage": "Eres un agente que se conecta al MCP Server Trigger, y a las herramientas que tiene disponible.\n\nResponde siempre seg\u00fan la base de datos, nunca respondas informaci\u00f3n que no funciona\nDebes responder en ingles.\n\n{{ $json.chatInput }}"
}
},
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 2.2,
"position": [
-512,
-64
],
"id": "1cfc5db4-f414-43a2-b833-34ff8b78a75d",
"name": "AI Agent"
},
{
"parameters": {
"model": {
"__rl": true,
"value": "gpt-4.1-mini",
"mode": "list",
"cachedResultName": "gpt-4.1-mini"
},
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"typeVersion": 1.2,
"position": [
-640,
192
],
"id": "a917fbf8-781f-48b8-a4d6-8c3cf62d1048",
"name": "OpenAI Chat Model",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"contextWindowLength": 10
},
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"typeVersion": 1.3,
"position": [
-448,
192
],
"id": "d41f6015-599e-4278-a4cd-03a15e1b8b4c",
"name": "Simple Memory"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "f6f646d1-c36a-489e-b808-79b0bd542b94",
"leftValue": "={{ $json.message.content.inicio }}",
"rightValue": "",
"operator": {
"type": "number",
"operation": "exists",
"singleValue": true
}
},
{
"id": "aa35c305-0002-47d3-b06c-f52599515ae3",
"leftValue": "={{ $json.message.content.final }}",
"rightValue": "",
"operator": {
"type": "number",
"operation": "exists",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
160,
-64
],
"id": "0cc0c1aa-d5b4-40a4-b97c-356f8787d2a1",
"name": "Is it about a biomarker region?"
},
{
"parameters": {
"url": "=https://api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom={{ $('Analyze the agent response').item.json.message.content.cromosoma }};start={{ $('Analyze the agent response').item.json.message.content.inicio }};end={{ $('Analyze the agent response').item.json.message.content.final }}",
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
416,
-160
],
"id": "df3ca3a7-c25b-4a8c-b814-d95ae35e8d06",
"name": "UCSC Genome API"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"jsCode": "let respuesta = $('AI Agent').item.json.output;\n\nconst cantidad = ($json.dna.toUpperCase().match(new RegExp('GCGC', \"g\")) || []).length;\n\nconst index = respuesta.indexOf('\u00bf');\nif(index > 0){\n respuesta = respuesta.substring(0, index) + '\\n- Sitios GCGC: ' + cantidad + '\\n- Secuencia: ' + $json.dna.toUpperCase() + '\\n\\n' + respuesta.substring(index);\n} else {\n respuesta = respuesta + '\\n- Sitios GCGC: ' + cantidad + '\\n- Secuencia: ' + $json.dna.toUpperCase() + '\\n\\n' + respuesta.substring(index);\n}\n\nreturn {\n output: respuesta\n}\n\n\n"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
720,
-160
],
"id": "6547b3e0-efc0-4ee2-9ef3-bd96979bebdb",
"name": "Attach the sequence"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"jsCode": "\nreturn {output:$('AI Agent').item.json.output};"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
416,
64
],
"id": "277d9c4b-e406-480d-a267-c8c79b5748fc",
"name": "Build a response"
},
{
"parameters": {
"modelId": {
"__rl": true,
"value": "chatgpt-4o-latest",
"mode": "list",
"cachedResultName": "CHATGPT-4O-LATEST"
},
"messages": {
"values": [
{
"content": "=Analiza el siguiente texto y si meciona region de biomarcadores para un gen especifico extrae del mismo la siguiente informacion Inicio, Fin y Chromosoma y retorna esa respuesta en formato JSON con esta estructura: \n\n{ inicio: <posicion inicial> \n final: <posicion final>\n cromosoma: <n\u00famero de cromosoma> \n}\n{{ $json.output }}"
}
]
},
"jsonOutput": true,
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.openAi",
"typeVersion": 1.8,
"position": [
-192,
-64
],
"id": "154fb4c4-2114-40dd-afa6-ba645989196d",
"name": "Analyze the agent response",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
}
],
"connections": {
"When chat message received": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"MCP Client": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Simple Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Analyze the agent response",
"type": "main",
"index": 0
}
]
]
},
"Is it about a biomarker region?": {
"main": [
[
{
"node": "UCSC Genome API",
"type": "main",
"index": 0
}
],
[
{
"node": "Build a response",
"type": "main",
"index": 0
}
]
]
},
"UCSC Genome API": {
"main": [
[
{
"node": "Attach the sequence",
"type": "main",
"index": 0
}
]
]
},
"Analyze the agent response": {
"main": [
[
{
"node": "Is it about a biomarker region?",
"type": "main",
"index": 0
}
]
]
}
},
"active": true,
"settings": {
"executionOrder": "v1"
},
"versionId": "9f4e8f5b-217e-46cc-8e5b-cbbd8fab1449",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "JPS5Xs2fFYTgwds1",
"tags": []
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
openAiApi
About this workflow
MCP Client - SeqBot. Uses chatTrigger, mcpClientTool, agent, lmChatOpenAi. Chat trigger; 10 nodes.
Source: https://gitlab.com/cancer-tools/ia-mcp-seqbot-client/-/blob/main/MCP_Client_-_SeqBot.json — original creator credit. Request a take-down →