Audit connected integrations and email pricing & limits report with n8n API, Claude and Gmail

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Built by Poghos Adamyan Poghos Adamyan
Created on June 05, 2026

Description

How it works

Connects to your n8n instance via API and fetches all credentials you have set up
Maps each credential type to its real service name (supports 40+ services: OpenAI, Slack, Notion, Airtable, Google, Stripe, and more)
Sends the full list to Claude AI, which researches current pricing tiers, free limits, and API rate limits for every service
Builds a colour-coded HTML email report sorted by tier: 🟢 Free · 🟡 Freemium · 🔴 Paid only
Includes: free quota, paid plan starting price, API rate limit, and key notes for each service

Set up steps

Create an HTTP Header Auth credential named n8n API Key — Header Name: X-N8N-API-KEY, Header Value: your n8n API key (Settings → API → Create API Key)
Connect your Anthropic account credential for Claude AI pricing research
Connect your Gmail OAuth2 credential for the report email
Open the Configuration node and set your n8n instance URL and notification email address
Run manually or add a Schedule trigger for automated weekly reports

Nodes Used (5)

Anthropic Chat Model
@n8n/n8n-nodes-langchain.lmChatAnthropic
Basic LLM Chain
@n8n/n8n-nodes-langchain.chainLlm
Code
n8n-nodes-base.code
Gmail
n8n-nodes-base.gmail
HTTP Request
n8n-nodes-base.httpRequest