This workflow follows the Agent → Gmail Tool 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 →
{
"nodes": [
{
"parameters": {
"rule": {
"interval": [
{
"field": "cronExpression",
"expression": "0 * * * *"
}
]
}
},
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.3,
"position": [
0,
300
],
"id": "alerta-001-schedule",
"name": "Trigger Cada Hora"
},
{
"parameters": {
"url": "https://tuclima-mundial.onrender.com/api/alertas/usuarios/",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "X-Alertas-Secret",
"value": "REEMPLAZAR_CON_N8N_ALERTAS_SECRET"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.4,
"position": [
240,
300
],
"id": "alerta-002-get-users",
"name": "Obtener Usuarios"
},
{
"parameters": {
"jsCode": "// Convertir el array de usuarios en items separados (uno por usuario)\nconst data = $input.first().json;\nif (!data.usuarios || data.usuarios.length === 0) {\n return [];\n}\nreturn data.usuarios.map(u => ({ json: u }));"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
480,
300
],
"id": "alerta-003-expand",
"name": "Expandir Usuarios"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": false,
"leftValue": "",
"typeValidation": "loose",
"version": 3
},
"conditions": [
{
"id": "filter-hora-alerta",
"leftValue": "={{ $json.hora_alerta }}",
"rightValue": "={{ $now.setZone('America/Argentina/Buenos_Aires').hour }}",
"operator": {
"type": "number",
"operation": "equals"
}
}
],
"combinator": "and"
},
"looseTypeValidation": true,
"options": {}
},
"type": "n8n-nodes-base.filter",
"typeVersion": 2.3,
"position": [
720,
300
],
"id": "alerta-004-filter-hora",
"name": "Filtrar por Hora"
},
{
"parameters": {
"url": "https://geocoding-api.open-meteo.com/v1/search",
"sendQuery": true,
"queryParameters": {
"parameters": [
{
"name": "name",
"value": "={{ $json.ubicacion_nombre }}"
},
{
"name": "count",
"value": "1"
},
{
"name": "language",
"value": "es"
},
{
"name": "format",
"value": "json"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.4,
"position": [
960,
300
],
"id": "alerta-005-geocoding",
"name": "Geocodificar Ubicacion"
},
{
"parameters": {
"jsCode": "// Verificar que la geocodificaci\u00f3n tuvo resultado\nconst geo = $input.first().json;\nif (!geo.results || geo.results.length === 0) {\n // Ciudad no encontrada: saltar este usuario\n return [];\n}\nconst loc = geo.results[0];\nreturn [{\n json: {\n lat: loc.latitude,\n lon: loc.longitude,\n city_resolved: `${loc.name}, ${loc.country_code || loc.country || ''}`\n }\n}];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1200,
300
],
"id": "alerta-006-verify-geo",
"name": "Verificar Geocodificacion"
},
{
"parameters": {
"url": "https://api.open-meteo.com/v1/forecast",
"sendQuery": true,
"queryParameters": {
"parameters": [
{
"name": "latitude",
"value": "={{ $json.lat }}"
},
{
"name": "longitude",
"value": "={{ $json.lon }}"
},
{
"name": "timezone",
"value": "America/Argentina/Buenos_Aires"
},
{
"name": "forecast_days",
"value": "3"
},
{
"name": "current",
"value": "temperature_2m,relative_humidity_2m,precipitation,rain,weather_code,wind_speed_10m,wind_gusts_10m,visibility"
},
{
"name": "daily",
"value": "weather_code,temperature_2m_max,temperature_2m_min,precipitation_sum,precipitation_probability_max,wind_speed_10m_max,et0_fao_evapotranspiration"
},
{
"name": "hourly",
"value": "cape,lifted_index,shortwave_radiation,cloud_cover"
}
]
},
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "User-Agent",
"value": "TuClimaApp-Alertas"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.4,
"position": [
1440,
300
],
"id": "alerta-007-forecast",
"name": "Obtener Pronostico"
},
{
"parameters": {
"jsCode": "// Evaluar umbrales clim\u00e1ticos por sector y preparar datos para el AI Agent\nconst usuario = $('Filtrar por Hora').item.json;\nconst geo = $('Verificar Geocodificacion').item.json;\nconst fc = $input.first().json; // forecast\n\nconst sectores = (usuario.sectores || 'agro').split(',').map(s => s.trim().toLowerCase());\nconst alertas = [];\nconst current = fc.current || {};\nconst daily = fc.daily || {};\nconst hourly = fc.hourly || {};\n\n// --- Valores clave del pron\u00f3stico ---\nconst tempMin3d = daily.temperature_2m_min?.length ? Math.min(...daily.temperature_2m_min) : 99;\nconst tempMax3d = daily.temperature_2m_max?.length ? Math.max(...daily.temperature_2m_max) : 0;\nconst lluviaMax = daily.precipitation_sum?.length ? Math.max(...daily.precipitation_sum) : 0;\nconst vientoMax3d = daily.wind_speed_10m_max?.length ? Math.max(...daily.wind_speed_10m_max) : 0;\nconst vientoActual = current.wind_speed_10m || 0;\nconst rafagaActual = current.wind_gusts_10m || 0;\nconst visibilidad = current.visibility || 99999;\nconst capePico = hourly.cape?.length ? Math.max(...hourly.cape.slice(0, 48)) : 0;\nconst radMedia = hourly.shortwave_radiation?.length\n ? hourly.shortwave_radiation.slice(0, 24).reduce((a, b) => a + b, 0) / 24\n : 200;\n\n// --- Umbrales por sector ---\nif (sectores.includes('agro')) {\n if (tempMin3d <= 2) alertas.push(`\ud83e\udd76 HELADA: m\u00ednima de ${tempMin3d.toFixed(1)}\u00b0C en los pr\u00f3ximos 3 d\u00edas`);\n if (lluviaMax >= 30) alertas.push(`\ud83c\udf27\ufe0f LLUVIA INTENSA: ${lluviaMax.toFixed(0)} mm m\u00e1x pronosticados`);\n if (vientoMax3d >= 60) alertas.push(`\ud83d\udca8 VIENTO FUERTE: r\u00e1fagas de hasta ${vientoMax3d.toFixed(0)} km/h`);\n}\n\nif (sectores.includes('naval')) {\n if (vientoActual > 40) alertas.push(`\u2693 VIENTO PELIGROSO: ${vientoActual.toFixed(0)} km/h \u2014 operaciones en riesgo`);\n if (visibilidad < 1000) alertas.push(`\ud83c\udf2b\ufe0f NIEBLA ESPESA: visibilidad ${Math.round(visibilidad)} m`);\n if (lluviaMax >= 20 && rafagaActual > 35)\n alertas.push(`\ud83c\udf0a MAL TIEMPO COMBINADO: lluvia + r\u00e1fagas de ${rafagaActual.toFixed(0)} km/h`);\n}\n\nif (sectores.includes('aereo')) {\n if (capePico > 1500) alertas.push(`\u26a1 ALTA INESTABILIDAD: CAPE ${Math.round(capePico)} J/kg \u2014 tormentas posibles`);\n if (vientoActual > 60) alertas.push(`\u2708\ufe0f VIENTOS INTENSOS: ${vientoActual.toFixed(0)} km/h en superficie`);\n if (visibilidad < 3000) alertas.push(`\ud83c\udf2b\ufe0f VISIBILIDAD REDUCIDA: ${(visibilidad / 1000).toFixed(1)} km`);\n}\n\nif (sectores.includes('energia')) {\n if (radMedia < 50) alertas.push(`\u2601\ufe0f BAJA RADIACI\u00d3N SOLAR: ${radMedia.toFixed(0)} W/m\u00b2 promedio \u2014 impacto en paneles`);\n if (vientoMax3d > 80) alertas.push(`\ud83c\udf00 VIENTO EXTREMO: ${vientoMax3d.toFixed(0)} km/h \u2014 revisar turbinas e\u00f3licas`);\n}\n\nreturn [{\n json: {\n ...usuario,\n alertas,\n nivel: alertas.length > 0 ? 'alerta' : 'normal',\n alertas_texto: alertas.length > 0 ? alertas.join('\\n') : 'Sin condiciones cr\u00edticas hoy.',\n ubicacion_resuelta: geo.city_resolved || usuario.ubicacion_nombre,\n clima_resumen: {\n temp_actual: current.temperature_2m,\n temp_min_3d: tempMin3d,\n temp_max_3d: tempMax3d,\n lluvia_max_3d: lluviaMax,\n viento_actual: vientoActual,\n rafaga_actual: rafagaActual,\n humedad: current.relative_humidity_2m,\n }\n }\n}];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1680,
300
],
"id": "alerta-008-umbrales",
"name": "Evaluar Umbrales"
},
{
"parameters": {
"modelName": "models/gemini-2.0-flash",
"options": {
"maxOutputTokens": 700
}
},
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"typeVersion": 1,
"position": [
1800,
520
],
"id": "alerta-009-gemini",
"name": "Google Gemini Chat Model",
"credentials": {
"googlePalmApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"promptType": "define",
"text": "Sos el asistente clim\u00e1tico profesional de TuClima.\n\nDatos del usuario:\n- Nombre: {{ $json.nombre }}\n- Sectores: {{ $json.sectores }}\n- Ubicaci\u00f3n: {{ $json.ubicacion_resuelta }}\n- Nivel: {{ $json.nivel }}\n\nAlertas detectadas:\n{{ $json.alertas_texto }}\n\nClima actual y pron\u00f3stico 3 d\u00edas:\n- Temperatura actual: {{ $json.clima_resumen.temp_actual }}\u00b0C | Humedad: {{ $json.clima_resumen.humedad }}%\n- M\u00ednima pr\u00f3x. 3d: {{ $json.clima_resumen.temp_min_3d }}\u00b0C | M\u00e1xima: {{ $json.clima_resumen.temp_max_3d }}\u00b0C\n- Lluvia m\u00e1x. 3d: {{ $json.clima_resumen.lluvia_max_3d }} mm | Viento: {{ $json.clima_resumen.viento_actual }} km/h\n\nRedact\u00e1 un email en espa\u00f1ol profesional y conciso (m\u00e1x 200 palabras):\n- Si nivel='alerta': asunto '\u26a0\ufe0f Alerta clim\u00e1tica para tu sector \u2014 TuClima' \u2014 destac\u00e1 cada alerta con UNA acci\u00f3n concreta por sector\n- Si nivel='normal': asunto '\u2600\ufe0f Tu resumen clim\u00e1tico del d\u00eda \u2014 TuClima' \u2014 tono positivo con 2-3 recomendaciones pr\u00e1cticas\n- Inici\u00e1 con 'Hola {{ $json.nombre }},'\n- Cerr\u00e1 con 'El equipo de TuClima'\n- NO uses markdown, NO uses HTML \u2014 texto plano con saltos de l\u00ednea\n\nLuego envi\u00e1 el email inmediatamente usando la herramienta enviar_correo. Destinatario: {{ $json.email }}",
"options": {
"maxIterations": 3
}
},
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 3.1,
"position": [
1920,
300
],
"id": "alerta-010-agent",
"name": "AI Agent Email"
},
{
"parameters": {
"descriptionType": "manual",
"toolDescription": "Env\u00eda el email de reporte o alerta clim\u00e1tica al usuario. \u00dasala exactamente UNA vez. Pas\u00e1 el asunto y el cuerpo del mensaje.",
"sendTo": "={{ $('Filtrar por Hora').item.json.email }}",
"subject": "={{ $fromAI('subject', 'Reporte clim\u00e1tico TuClima') }}",
"message": "={{ $fromAI('mensaje', 'Cuerpo del email') }}",
"options": {}
},
"type": "n8n-nodes-base.gmailTool",
"typeVersion": 2.2,
"position": [
2160,
520
],
"id": "alerta-011-gmail",
"name": "enviar_correo",
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
}
}
],
"connections": {
"Trigger Cada Hora": {
"main": [
[
{
"node": "Obtener Usuarios",
"type": "main",
"index": 0
}
]
]
},
"Obtener Usuarios": {
"main": [
[
{
"node": "Expandir Usuarios",
"type": "main",
"index": 0
}
]
]
},
"Expandir Usuarios": {
"main": [
[
{
"node": "Filtrar por Hora",
"type": "main",
"index": 0
}
]
]
},
"Filtrar por Hora": {
"main": [
[
{
"node": "Geocodificar Ubicacion",
"type": "main",
"index": 0
}
]
]
},
"Geocodificar Ubicacion": {
"main": [
[
{
"node": "Verificar Geocodificacion",
"type": "main",
"index": 0
}
]
]
},
"Verificar Geocodificacion": {
"main": [
[
{
"node": "Obtener Pronostico",
"type": "main",
"index": 0
}
]
]
},
"Obtener Pronostico": {
"main": [
[
{
"node": "Evaluar Umbrales",
"type": "main",
"index": 0
}
]
]
},
"Evaluar Umbrales": {
"main": [
[
{
"node": "AI Agent Email",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent Email",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"enviar_correo": {
"ai_tool": [
[
{
"node": "AI Agent Email",
"type": "ai_tool",
"index": 0
}
]
]
}
},
"meta": {
"templateCredsSetupCompleted": true
}
}
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.
gmailOAuth2googlePalmApi
Pro
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About this workflow
Alertas Proactivas. Uses httpRequest, lmChatGoogleGemini, agent, gmailTool. Scheduled trigger; 11 nodes.
Source: https://github.com/santinote9-droid/tuclima-mundial/blob/8a042ba155cd628889eb8eef2b54df6fdde37101/n8n/alertas_proactivas.json — original creator credit. Request a take-down →
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