This workflow follows the Agent → Chat Trigger recipe pattern — see all workflows that pair these two integrations.
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": "Sweeppea Create Participant Dynamic Form",
"nodes": [
{
"parameters": {
"jsCode": "/* Convert API v3 Response To Dynamic System Prompt */\n\nconst responseData = $input.first().json;\nconst data = responseData.Data;\n\nif (!data || !data.FormFields) {\n\tthrow new Error('Response data invalid or empty');\n}\n\n/* Create Slug Function: \"First Name\" \u2192 \"First_Name\", keep punctuation */\nconst toSlug = (name) => {\n\treturn name\n\t\t.trim()\n\t\t.replace(/\\s+/g, '_'); // Replace spaces with underscores\n};\n\n/* Create Field Mapping: slug -> field data */\nconst fieldMapping = {};\ndata.FormFields.forEach(f => {\n\tconst slug = toSlug(f.Name);\n\tfieldMapping[slug] = {\n\t\tid : f.Id,\n\t\tname : f.Name,\n\t\ttype : f.Type,\n\t\trequired : f.Required,\n\t\tplaceholder : f.Placeholder,\n\t\toptions : f.Options || []\n\t};\n});\n\n/* Find Email And Phone Fields */\nconst emailField = data.FormFields.find(f => f.Type === 'email');\nconst phoneField = data.FormFields.find(f => f.Type === 'usphonenumber');\n\n/* Separate Required And Optional Fields */\nconst requiredFields = data.FormFields.filter(f => f.Required);\nconst optionalFields = data.FormFields.filter(f => !f.Required);\n\n/* Build Required Fields List */\nconst requiredList = requiredFields.map(f => {\n\tconst placeholder = f.Placeholder && f.Placeholder !== '' ? ` - Example: ${f.Placeholder}` : '';\n\tconst options = f.Options && f.Options.length > 0 \n\t\t? ` - Options: ${f.Options.map(o => `${o.Id}: ${o.Name}`).join(', ')}`\n\t\t: '';\n\treturn `- ${f.Name}${placeholder}${options}`;\n}).join('\\n');\n\n/* Build Optional Fields List */\nconst optionalList = optionalFields.length > 0 \n\t? '\\n\\nOptional fields:\\n' + optionalFields.map(f => {\n\t\tconst placeholder = f.Placeholder && f.Placeholder !== '' ? ` - Example: ${f.Placeholder}` : '';\n\t\tconst options = f.Options && f.Options.length > 0 \n\t\t\t? ` - Options: ${f.Options.map(o => `${o.Id}: ${o.Name}`).join(', ')}`\n\t\t\t: '';\n\t\treturn `- ${f.Name}${placeholder}${options}`;\n\t}).join('\\n')\n\t: '';\n\n/* Build JSON Example */\nconst jsonExample = {};\ndata.FormFields.forEach(f => {\n\tconst slug = toSlug(f.Name);\n\tif (f.Type === 'list' && f.Options.length > 0) {\n\t\tjsonExample[slug] = String(f.Options[0].Id);\n\t} else if (f.Type === 'email') {\n\t\tjsonExample[slug] = 'user@example.com';\n\t} else if (f.Type === 'usphonenumber') {\n\t\tjsonExample[slug] = '1234567890';\n\t} else if (f.Type === 'birthdate') {\n\t\tjsonExample[slug] = 'MM/DD/YYYY';\n\t} else if (f.Type === 'number') {\n\t\tjsonExample[slug] = '0';\n\t} else {\n\t\tjsonExample[slug] = '<value>';\n\t}\n});\n\n/* Dynamic System Prompt */\nconst systemPrompt = `You are a friendly assistant helping users register for a sweepstake.\n\nWhen you have ALL the required data from the user, respond ONLY with a JSON object containing the user's information.\n\nRequired fields:\n${requiredList}${optionalList}\n\nWhen you have ALL the required data, respond with this EXACT JSON format (use the exact field names with underscores):\n\n{\n \"action\": \"create_participant\",\n${Object.entries(jsonExample).map(([key, val]) => ` \"${key}\": \"${val}\"`).join(',\\n')}\n}\n\nImportant:\n- Ask for ONE field at a time in a conversational way\n- Be friendly and engaging\n- Validate data formats before proceeding\n- When you have ALL the required data, respond ONLY with the JSON (no additional text)\n- Use EXACTLY the field names shown above (with underscores replacing spaces)\n- For list/select fields, use the option ID number, not the name\n- DO NOT use placeholder text, use actual user data\n- DO NOT include any other fields in the JSON`;\n\n/* Return System Prompt And Data */\nreturn {\n\tjson: {\n\t\tsystemPrompt : systemPrompt,\n\t\tfieldMapping : fieldMapping,\n\t\temailFieldSlug : emailField ? toSlug(emailField.Name) : 'Email',\n\t\tphoneFieldSlug : phoneField ? toSlug(phoneField.Name) : 'Mobile_Number',\n\t\tsweepstakesToken : data.SweepstakesToken,\n\t\tentryPageToken : data.EntryPageToken,\n\t\tchatInput : $('When chat message received').item.json.chatInput,\n\t\tsessionId : $('When chat message received').item.json.sessionId\n\t}\n};"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
224,
400
],
"id": "719ca6a8-a6d1-436c-ad79-a9eaa104ea1a",
"name": "Build Dynamic Prompt"
},
{
"parameters": {
"promptType": "define",
"text": "={{ $json.chatInput }}",
"options": {
"systemMessage": "={{ $json.systemPrompt }}"
}
},
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 2.2,
"position": [
464,
400
],
"id": "bab6dfb9-aa7a-44c8-993a-a1c82689cdb0",
"name": "AI Agent1"
},
{
"parameters": {
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"typeVersion": 1,
"position": [
416,
624
],
"id": "6ebc5b01-e92c-4d18-85d6-78fe4f87f444",
"name": "Google Gemini Chat Model1",
"credentials": {
"googlePalmApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"sessionIdType": "customKey",
"sessionKey": "={{ $json.sessionId }}",
"contextWindowLength": 10
},
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"typeVersion": 1.3,
"position": [
608,
624
],
"id": "5c66c3b2-5973-442a-8143-82a068df725e",
"name": "Simple Memory1"
},
{
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"leftValue": "={{ $json.output }}",
"rightValue": "create_participant",
"operator": {
"type": "string",
"operation": "contains"
},
"id": "f35b4e2a-6367-41c6-ac39-d864a45b4cd9"
}
],
"combinator": "and"
}
}
]
},
"options": {
"fallbackOutput": "extra"
}
},
"type": "n8n-nodes-base.switch",
"typeVersion": 3.3,
"position": [
816,
400
],
"id": "0a26d65d-85ac-45d7-85bb-3b6d1125e206",
"name": "Switch1"
},
{
"parameters": {
"message": "={{\n $json.Response === false\n ? ($json.Message?.includes('Duplicated entries not allowed')\n ? 'Thank you for your interest! Unfortunately, participants can only enter once per sweepstake. We appreciate your enthusiasm! \ud83c\udf89'\n : `Sorry, there was an error: ${$json.Message}`)\n : 'Thank you for participating! Your entry has been received. \ud83c\udf8a'\n}}",
"waitUserReply": false,
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.chat",
"typeVersion": 1,
"position": [
1504,
304
],
"id": "3b45c2ec-7b83-4f36-a1ca-51f3b46d3e59",
"name": "Respond to Chat2"
},
{
"parameters": {
"public": true,
"options": {
"responseMode": "responseNodes"
}
},
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"typeVersion": 1.3,
"position": [
-208,
400
],
"id": "5aa7ee6a-294b-41fc-983f-62a46efb53c0",
"name": "When chat message received"
},
{
"parameters": {
"message": "={{ $('AI Agent1').item.json.output }}",
"waitUserReply": false,
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.chat",
"typeVersion": 1,
"position": [
1040,
496
],
"id": "8a582ddd-7bdf-445f-baf8-804c7f904b08",
"name": "Respond to Chat"
},
{
"parameters": {
"jsCode": "/* Extract AI Response And Prompt Data */\nconst aiOutput = $input.first().json.output;\nconst promptData = $('Build Dynamic Prompt').first().json;\n\n/* Clean Markdown */\nconst cleanOutput = aiOutput.replace(/```json\\s*/g, '').replace(/```/g, '').trim();\n\n/* Parse JSON */\nconst parsed = JSON.parse(cleanOutput);\n\n/* Check Action */\nif (parsed.action !== 'create_participant') {\n\treturn { json: {} };\n}\n\n/* Remove Action */\nconst { action, ...fields } = parsed;\n\n/* Extract Email And Phone Values */\nconst keyEmail = fields[promptData.emailFieldSlug] || '';\nconst keyPhoneNumber = fields[promptData.phoneFieldSlug] || '';\n\n/* Debug Output */\nconst result = {\n\tKeyEmail : keyEmail,\n\tKeyPhoneNumber : keyPhoneNumber,\n\tBonusEntries : 0,\n\tFields : fields\n};\n\nconsole.log('=== TRANSFORM OUTPUT ===');\nconsole.log(JSON.stringify(result, null, 2));\n\n/* Return Format For Sweeppea Node */\nreturn {\n\tjson: result\n};"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1040,
304
],
"id": "3afc200f-359a-4bb7-a8c3-3aa002f163ab",
"name": "Transform AI Response to API Format"
},
{
"parameters": {
"operation": "getFormFields",
"sweepstakesToken": "965a7edb-1f46-4116-a394-9c8a63769284",
"additionalFields": {}
},
"type": "n8n-nodes-sweeppea.sweeppea",
"typeVersion": 1,
"position": [
16,
400
],
"id": "392dc422-851c-4105-b679-6637d2478ca5",
"name": "Get sweepstake form fields",
"credentials": {
"sweeppeaApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"sweepstakesToken": "965a7edb-1f46-4116-a394-9c8a63769284",
"additionalFields": {}
},
"type": "n8n-nodes-sweeppea.sweeppea",
"typeVersion": 1,
"position": [
1248,
304
],
"id": "da5f4fdf-7fa3-45d1-8fa2-b6a49f6fd781",
"name": "Create a participant",
"credentials": {
"sweeppeaApi": {
"name": "<your credential>"
}
},
"onError": "continueRegularOutput"
}
],
"connections": {
"Build Dynamic Prompt": {
"main": [
[
{
"node": "AI Agent1",
"type": "main",
"index": 0
}
]
]
},
"AI Agent1": {
"main": [
[
{
"node": "Switch1",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model1": {
"ai_languageModel": [
[
{
"node": "AI Agent1",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Simple Memory1": {
"ai_memory": [
[
{
"node": "AI Agent1",
"type": "ai_memory",
"index": 0
}
]
]
},
"Switch1": {
"main": [
[
{
"node": "Transform AI Response to API Format",
"type": "main",
"index": 0
}
],
[
{
"node": "Respond to Chat",
"type": "main",
"index": 0
}
]
]
},
"When chat message received": {
"main": [
[
{
"node": "Get sweepstake form fields",
"type": "main",
"index": 0
}
]
]
},
"Transform AI Response to API Format": {
"main": [
[
{
"node": "Create a participant",
"type": "main",
"index": 0
}
]
]
},
"Get sweepstake form fields": {
"main": [
[
{
"node": "Build Dynamic Prompt",
"type": "main",
"index": 0
}
]
]
},
"Create a participant": {
"main": [
[
{
"node": "Respond to Chat2",
"type": "main",
"index": 0
}
]
]
}
},
"active": true,
"settings": {
"executionOrder": "v1"
},
"versionId": "9aa4e720-5ce4-4c09-8aed-47258bdc889b",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "EUfRdBoReObMQEBB",
"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.
googlePalmApisweeppeaApi
Pro
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
About this workflow
Sweeppea Create Participant Dynamic Form. Uses agent, lmChatGoogleGemini, memoryBufferWindow, chat. Chat trigger; 11 nodes.
Source: https://github.com/Sweeppea-Development-Lab/sweeppea-n8n-nodes/blob/c4dbe5a70c9de86b27b1a226d1e2ab71f1ed64ee/examples/sweeppea-create-participant-dynamic-form.json — original creator credit. Request a take-down →
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