60
A2A
Automate car service reminders and replies with Google Sheets, Gemini and Gmail
n8n-workflow-20225.n8n.io
· n8n.io
Quick overview This workflow runs every morning, reads auto repair customer data from Google Sheets, uses Google Gemini to draft service-due reminder emails, and sends them via Gmail (or a test copy to the shop owner) while logging sent reminders back to the sheet. How it works 1. Runs every morning at 9:00 on a schedule. 2. Reads the Customers tab in Google Sheets and calculates each customer’s next service due date from the last service date and interval. 3. Filters to customers due within the configured reminder window, skipping opt-outs, invalid emails, and anyone already reminded for the same due date, and limits sends to the daily cap. 4. Uses Google Gemini to generate a short plain-text reminder email for each due customer, falling back to a default message if generation fails. 5. Sends the email via Gmail to the customer when live mode is enabled, or sends a test copy to the owner email when live mode is disabled. 6. Updates the same Google Sheets row with the reminder timestam
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Trust score
60/100
grade C · 2 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
1 snapshot tracked
Owner
unverified
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C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a workflow template listed by n8n.io. Scored on the 2 criteria that apply (9 of 15 points, scaled to 100); the A2A card criteria do not apply.
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C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a workflow template listed by n8n.io. Scored on the 2 criteria that apply (9 of 15 points, scaled to 100); the A2A card criteria do not apply.
n/a
Agent card
n/a
Not applicable: a workflow template listed by n8n.io. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
n/a
Live endpoint
n/a
Not applicable: a workflow template you import, not a hosted endpoint.
n/a
Protocol version
n/a
Not applicable: no A2A agent card served.
n/a
JWS signature
n/a
Not applicable: no A2A agent card served.
n/a
Uptime track record
n/a
Not applicable: our probes looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a
Skill declaration
n/a
Not applicable: no A2A agent card served.
partial
Verified Identity
5/10
Provider declared: n8n.io (https://n8n.io). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
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pass
Freshness + modern flags
4/5
seen in upstream source within 0d
n/a
Security declaration
n/a
Not applicable: no A2A agent card served.
Activity (audit trail)
last 24h · 0 invocations Public aggregate · no PII recordedNothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.
Listing history
1 snapshot Every change to the catalogue entry| Captured | Hash | |
|---|---|---|
| 2026-10-06 11:13:21 current | 7d639780ecbe… |
view → |
Uptime
not graded
catalogue listing · no agent card to probe
Response
—
no direct probe retained
Skills
0
declared
Streaming
—
SSE-capable
Endpoints
| Agent card | https://n8n.io/workflows/20225 |
| Provider | https://n8n.io |
| Docs | https://n8n.io/workflows/20225 |
Discovered via
n8n_workflows
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Audit-grade evidence bundle
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Raw agent card JSON
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},
{
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"icon": "\ud83d\udcf1",
"label": "Building an expense tracking app in 10 minutes"
},
{
"url": "https://n8n.io/blog/the-ultimate-guide-to-automate-your-video-collaboration-with-whereby-mattermost-and-n8n/",
"icon": "\ud83d\udcf9",
"label": "The ultimate guide to automate your video collaboration with Whereby, Mattermost, and n8n"
},
{
"url": "https://n8n.io/blog/5-workflow-automations-for-mattermost-that-we-love-at-n8n/",
"icon": "\ud83e\udd16",
"label": "5 workflow automations for Mattermost that we love at n8n"
},
{
"url": "https://n8n.io/blog/learn-to-build-powerful-api-endpoints-using-webhooks/",
"icon": "\ud83e\uddf0",
"label": "Learn to Build Powerful API Endpoints Using Webhooks"
},
{
"url": "https://n8n.io/blog/how-a-membership-development-manager-automates-his-work-and-investments/",
"icon": "\ud83d\udcc8",
"label": "How a Membership Development Manager automates his work and investments"
},
{
"url": "https://n8n.io/blog/a-low-code-bitcoin-ticker-built-with-questdb-and-n8n-io/",
"icon": "\ud83d\udcc8",
"label": "A low-code bitcoin ticker built with QuestDB and n8n.io"
},
{
"url": "https://n8n.io/blog/how-to-set-up-a-ci-cd-pipeline-with-no-code/",
"icon": "\ud83c\udfa1",
"label": "How to set up a no-code CI/CD pipeline with GitHub and TravisCI"
},
{
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"icon": "\ud83c\udf96",
"label": "Benefits of automation and n8n: An interview with HubSpot's Hugh Durkin"
},
{
"url": "https://n8n.io/blog/how-goomer-automated-their-operations-with-over-200-n8n-workflows/",
"icon": "\ud83d\udef5",
"label": "How Goomer automated their operations with over 200 n8n workflows"
},
{
"url": "https://n8n.io/blog/aws-workflow-automation/",
"label": "7 no-code workflow automations for Amazon Web Services"
}
],
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}
]
},
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],
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"subcategories": {
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}
}
},
"group": "[\"input\"]",
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},
"iconData": {
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"type": "icon"
},
"displayName": "Edit Fields (Set)",
"typeVersion": 3,
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}
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},
{
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"icon": "fa:sync",
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{
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}
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"subcategories": {
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}
}
},
"group": "[\"organization\"]",
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"color": "#007755"
},
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"type": "icon"
},
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}
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},
{
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"icon": "\u2600\ufe0f",
"label": "2021: The Year to Automate the New You with n8n"
},
{
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"icon": "\ud83d\udc65",
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},
{
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"icon": "\ud83d\udc66",
"label": "Build your own virtual assistant with n8n: A step by step guide"
},
{
"url": "https://n8n.io/blog/automation-for-maintainers-of-open-source-projects/",
"icon": "\ud83c\udff7\ufe0f",
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}
],
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}
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},
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},
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},
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}
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},
{
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"icon": "file:gmail.svg",
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],
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},
{
"url": "https://n8n.io/blog/supercharging-your-conference-registration-process-with-n8n/",
"icon": "\ud83c\udfab",
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},
{
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{
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{
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{
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},
{
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],
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}
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},
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}
}
},
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},
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{
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],
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"label": "How to get started with CRM automation (with 3 no-code workflow ideas"
},
{
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"label": "7 no-code workflow automations for Amazon Web Services"
}
],
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}
]
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],
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"subcategories": {
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]
}
}
},
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"name": "Wait",
"color": "#804050"
},
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},
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}
]
},
{
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"icon": "fa:sticky-note",
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"Sticky"
],
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],
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]
}
}
},
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"color": "#FFD233"
},
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"type": "icon"
},
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}
]
},
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"icon": "file:gmail.svg",
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},
{
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"icon": "\ud83c\udfab",
"label": "Supercharging your conference registration process with n8n"
},
{
"url": "https://n8n.io/blog/no-code-ecommerce-workflow-automations/",
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"label": "6 e-commerce workflows to power up your Shopify s"
},
{
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},
{
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},
{
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"icon": " \ud83d\udda5\ufe0f",
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},
{
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"icon": "\ud83d\udcaa",
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}
],
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}
],
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}
]
},
"categories": [
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],
"nodeVersion": "1.0",
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}
},
"group": "[\"trigger\"]",
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},
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]
},
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"icon": "file:code.svg",
"name": "n8n-nodes-base.code",
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"JS",
"Python",
"Script",
"Custom Code",
"Function"
],
"details": "The Code node allows you to execute JavaScript in your workflow.",
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}
]
},
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],
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"subcategories": {
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]
}
}
},
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},
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},
"displayName": "Code",
"typeVersion": 2,
"nodeCategories": [
{
"id": 5,
"name": "Development"
},
{
"id": 9,
"name": "Core Nodes"
}
]
},
{
"id": 839,
"icon": "fa:clock",
"name": "n8n-nodes-base.scheduleTrigger",
"codex": {
"data": {
"alias": [
"Time",
"Scheduler",
"Polling",
"Cron",
"Interval"
],
"resources": {
"generic": [],
"primaryDocumentation": [
{
"url": "https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.scheduletrigger/"
}
]
},
"categories": [
"Core Nodes"
],
"nodeVersion": "1.0",
"codexVersion": "1.0"
}
},
"group": "[\"trigger\",\"schedule\"]",
"defaults": {
"name": "Schedule Trigger",
"color": "#31C49F"
},
"iconData": {
"icon": "clock",
"type": "icon"
},
"displayName": "Schedule Trigger",
"typeVersion": 1,
"nodeCategories": [
{
"id": 9,
"name": "Core Nodes"
}
]
},
{
"id": 1123,
"icon": "fa:link",
"name": "@n8n/n8n-nodes-langchain.chainLlm",
"codex": {
"data": {
"alias": [
"LangChain"
],
"resources": {
"primaryDocumentation": [
{
"url": "https://docs.n8n.io/integrations/builtin/cluster-nodes/root-nodes/n8n-nodes-langchain.chainllm/"
}
]
},
"categories": [
"AI",
"Langchain"
],
"subcategories": {
"AI": [
"Chains",
"Root Nodes"
]
}
}
},
"group": "[\"transform\"]",
"defaults": {
"name": "Basic LLM Chain",
"color": "#909298"
},
"iconData": {
"icon": "link",
"type": "icon"
},
"displayName": "Basic LLM Chain",
"typeVersion": 2,
"nodeCategories": [
{
"id": 25,
"name": "AI"
},
{
"id": 26,
"name": "Langchain"
}
]
},
{
"id": 1262,
"icon": "file:google.svg",
"name": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"codex": {
"data": {
"resources": {
"primaryDocumentation": [
{
"url": "https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatgooglegemini/"
}
]
},
"categories": [
"AI",
"Langchain"
],
"subcategories": {
"AI": [
"Language Models",
"Root Nodes"
],
"Language Models": [
"Chat Models (Recommended)"
]
}
}
},
"group": "[\"transform\"]",
"defaults": {
"name": "Google Gemini Chat Model"
},
"iconData": {
"type": "file",
"fileBuffer": "data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB2aWV3Qm94PSIwIDAgNDggNDgiPjxkZWZzPjxwYXRoIGlkPSJhIiBkPSJNNDQuNSAyMEgyNHY4LjVoMTEuOEMzNC43IDMzLjkgMzAuMSAzNyAyNCAzN2MtNy4yIDAtMTMtNS44LTEzLTEzczUuOC0xMyAxMy0xM2MzLjEgMCA1LjkgMS4xIDguMSAyLjlsNi40LTYuNEMzNC42IDQuMSAyOS42IDIgMjQgMiAxMS44IDIgMiAxMS44IDIgMjRzOS44IDIyIDIyIDIyYzExIDAgMjEtOCAyMS0yMiAwLTEuMy0uMi0yLjctLjUtNCIvPjwvZGVmcz48Y2xpcFBhdGggaWQ9ImIiPjx1c2UgeGxpbms6aHJlZj0iI2EiIG92ZXJmbG93PSJ2aXNpYmxlIi8+PC9jbGlwUGF0aD48cGF0aCBmaWxsPSIjRkJCQzA1IiBkPSJNMCAzN1YxMWwxNyAxM3oiIGNsaXAtcGF0aD0idXJsKCNiKSIvPjxwYXRoIGZpbGw9IiNFQTQzMzUiIGQ9Im0wIDExIDE3IDEzIDctNi4xTDQ4IDE0VjBIMHoiIGNsaXAtcGF0aD0idXJsKCNiKSIvPjxwYXRoIGZpbGw9IiMzNEE4NTMiIGQ9Im0wIDM3IDMwLTIzIDcuOSAxTDQ4IDB2NDhIMHoiIGNsaXAtcGF0aD0idXJsKCNiKSIvPjxwYXRoIGZpbGw9IiM0Mjg1RjQiIGQ9Ik00OCA0OCAxNyAyNGwtNC0zIDM1LTEweiIgY2xpcC1wYXRoPSJ1cmwoI2IpIi8+PC9zdmc+"
},
"displayName": "Google Gemini Chat Model",
"typeVersion": 1,
"nodeCategories": [
{
"id": 25,
"name": "AI"
},
{
"id": 26,
"name": "Langchain"
}
]
}
]
},
"detail": {
"description": "Quick overview This workflow runs every morning, reads auto repair customer data from Google Sheets, uses Google Gemini to draft service-due reminder emails, and sends them via Gmail (or a test copy to the shop owner) while logging sent reminders back to the sheet. How it works 1. Runs every morning at 9:00 on a schedule. 2. Reads the Customers tab in Google Sheets and calculates each customer\u2019s next service due date from the last service date and interval. 3. Filters to customers due within the configured reminder window, skipping opt-outs, invalid emails, and anyone already reminded for the same due date, and limits sends to the daily cap. 4. Uses Google Gemini to generate a short plain-text reminder email for each due customer, falling back to a default message if generation fails. 5. Sends the email via Gmail to the customer when live mode is enabled, or sends a test copy to the owner email when live mode is disabled. 6. Updates the same Google Sheets row with the reminder timestamp and the due date that was reminded, then waits 7 seconds before processing the next customer. Setup 1. Create or copy a Google Sheets document with a Customers tab and columns for customername, email, vehicle, lastservicedate, lastservicetype, serviceintervaldays, optout, remindedforduedate, and remindersentat. 2. Add Google Sheets, Gmail, and Google Gemini credentials in n8n. 3. Update the workflow parameters (shop name, phone, booking link, Google Sheet URL, reminder window, default interval, daily cap, live mode, and test email). 4. Run the workflow with live mode disabled to verify the test emails, then enable live mode to send to customers and log reminders. Requirements - Google Sheets account with a Customers tab - Gmail account - Google Gemini API key (free tier works) Customization - Change reminddaysbefore, defaultintervaldays or dailysendcap in Set Service Parameters - Edit the email prompt in Generate Reminder Email - Change the send time in Every Morning at 9am"
}
}