The workflow JSON
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{
"name": "Newsletter Agent",
"nodes": [
{
"parameters": {},
"id": "5f1cd3f3-4e55-460a-9e3f-bd81d4b2afd6",
"name": "Manual Trigger",
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
220,
320
]
},
{
"parameters": {
"keepOnlySet": true,
"values": {
"string": [
{
"name": "agent_slug",
"value": "newsletter-agent"
},
{
"name": "agent_title",
"value": "Newsletter Agent"
},
{
"name": "agent_description",
"value": "Schreibt Newsletter mit klarer Struktur, Storyline und CTA."
},
{
"name": "system_prompt",
"value": "Du bist ein hochspezialisierter Business-Agent. Arbeite pr\u00e4zise, strukturiert, umsetzungsorientiert und ohne Halluzinationen. Nutze ausschlie\u00dflich die bereitgestellten Eingaben. Wenn Daten fehlen oder unsicher sind, markiere sie explizit als offen. Antworte standardm\u00e4\u00dfig auf Deutsch, au\u00dfer die Eingabe verlangt etwas anderes. Liefere Ergebnisse so, dass ein Team sie direkt weiterverwenden kann.\n\nRolle: Newsletter Agent. Aufgabe: Schreibt Newsletter mit klarer Struktur, Storyline und CTA. Arbeite immer in diesem Output-Rahmen: Subject lines, Opening, Main body, CTA, PS."
},
{
"name": "task",
"value": "Erstelle einen Newsletter-Entwurf zum gegebenen Thema."
},
{
"name": "goal",
"value": "\u00d6ffnungsrate, Lesedauer und CTA-Klicks verbessern."
},
{
"name": "context",
"value": "B2B Audience interessiert an AI, Automatisierung und Wachstum."
},
{
"name": "input_data",
"value": "{\n \"topic\": \"Warum AI Agents 2026 kein Nice-to-have mehr sind\",\n \"audience\": \"KMU Gesch\u00e4ftsf\u00fchrer\",\n \"core_message\": \"Wer repetitive Kommunikation nicht automatisiert, verliert Marge und Geschwindigkeit.\",\n \"cta\": \"Strategiegespr\u00e4ch buchen\"\n}"
},
{
"name": "output_format",
"value": "Markdown mit klaren \u00dcberschriften und Bulletpoints"
},
{
"name": "output_schema",
"value": "\n- Subject lines\n- Opening\n- Main body\n- CTA\n- PS"
},
{
"name": "extra_rules",
"value": "Klar, intelligent, nicht zu lang."
},
{
"name": "sample_customer_value",
"value": "Dieser Agent erstellt klare B2B-Newsletter mit CTA."
}
]
}
},
"id": "e3bd715b-565e-4523-b328-924a7b6c72f8",
"name": "Set Agent Input",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
480,
320
]
},
{
"parameters": {
"jsCode": "const user_message = `Aufgabe: ${$json.task}\n\nZiel: ${$json.goal}\n\nKontext: ${$json.context}\n\nEingabedaten (JSON oder Text):\n${$json.input_data}\n\nErwartete Ausgabebausteine:\n${$json.output_schema}\n\nZusatzregeln:\n${$json.extra_rules}`;\n\nreturn [{\n json: {\n ...$json,\n user_message,\n import_note: 'Nach dem Import nur OPENAI_API_KEY bzw. HTTP Credential und optional OPENAI_MODEL anpassen.'\n }\n}];"
},
"id": "f3cfdeaf-6f54-4308-a1d2-633ca2c16eb1",
"name": "Build Prompt",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
760,
320
]
},
{
"parameters": {
"method": "POST",
"url": "https://api.openai.com/v1/responses",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "=Bearer {{$env.OPENAI_API_KEY}}"
},
{
"name": "Content-Type",
"value": "application/json"
}
]
},
"sendBody": true,
"specifyBody": "json",
"jsonBody": "={{ JSON.stringify({ model: $env.OPENAI_MODEL || 'gpt-4.1', instructions: $json.system_prompt, input: $json.user_message }) }}",
"options": {}
},
"id": "7ff6cc5a-06b9-4ee5-a87c-ce3466a4ffa1",
"name": "Call OpenAI Responses API",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1040,
320
]
},
{
"parameters": {
"jsCode": "const body = $json;\n let text = '';\n if (Array.isArray(body.output)) {\n for (const item of body.output) {\n if (Array.isArray(item.content)) {\n for (const c of item.content) {\n if (c.type === 'output_text' && c.text) text += c.text + '\n';\n }\n }\n }\n }\n return [{\n json: {\n agent: $('Set Agent Input').first().json.agent_title,\n result: text.trim(),\n raw_response: body\n }\n }];"
},
"id": "32fba313-4506-47b0-ba2b-36f90fe90215",
"name": "Extract Result",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1300,
320
]
}
],
"connections": {
"Manual Trigger": {
"main": [
[
{
"node": "Set Agent Input",
"type": "main",
"index": 0
}
]
]
},
"Set Agent Input": {
"main": [
[
{
"node": "Build Prompt",
"type": "main",
"index": 0
}
]
]
},
"Build Prompt": {
"main": [
[
{
"node": "Call OpenAI Responses API",
"type": "main",
"index": 0
}
]
]
},
"Call OpenAI Responses API": {
"main": [
[
{
"node": "Extract Result",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
},
"meta": {
"templateCredsSetupCompleted": false
},
"active": false,
"versionId": "167c0dcc-44f1-4289-912c-e3053feaa24e",
"id": "6e7f0ca9-99bf-4afe-8b23-5b7a62a24407",
"tags": [
"ai",
"template",
"newsletter-agent"
]
}
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About this workflow
Newsletter Agent. Uses httpRequest. Event-driven trigger; 5 nodes.
Source: https://github.com/kitz-labs/agent-templates-de/blob/1f4f4a5be56b818bda297731135696542f4907d5/newsletter-agent/n8n/newsletter-agent.n8n.json — original creator credit. Request a take-down →
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