Connect n8n automations to live trend data

n8n shines when each node has a clean contract. Trends MCP supplies one HTTP surface and one MCP endpoint for Google, YouTube, TikTok, Reddit, Amazon, and more, so workflows can branch on real momentum instead of brittle scrapers.

Automation builders on n8n often glue an LLM to a patchwork of scrapers. Trends MCP concentrates trend pulls behind https://api.trendsmcp.ai/api for JSON workflows and https://api.trendsmcp.ai/mcp for MCP-aware agents, which matches how modern templates already mix OpenAI nodes with MCP Client nodes.

Which node type fits which job

Deterministic schedules belong in HTTP Request nodes: pull get_trends for a stored keyword list, write results to Notion, Slack, or BigQuery, and alert when 3M growth crosses a threshold. Agentic branches belong in MCP Client nodes: let the model pick get_top_trends when the brief is exploratory, then fall back to get_growth once it locks a topic. The API reference lists the JSON fields for each operation.

A practical alerting pattern

  1. Trigger on a cron such as Monday 07:00.
  2. Read yesterday’s priority keywords from a sheet.
  3. POST get_growth with percent_growth including 7D and 3M for google search and youtube.
  4. If both windows are positive, post a Slack card with the keyword and the numbers; if either window is negative, enqueue a content refresh task.

The same skeleton works for ecommerce SKUs by swapping sources to amazon and google shopping.

Honest limits to plan around

Trend data can spike on news that does not match a brand’s risk tolerance. Rate limits and quota apply per account, so high-frequency loops should batch and cache. Legal and platform policies still govern downstream actions such as auto-posting to social accounts.

Common questions

Use the REST API when a workflow should stay deterministic: scheduled pulls, transforms, and writes to Sheets or a database. Use MCP when an AI Agent or LLM step inside n8n must choose tools dynamically. Both paths share the same credential and the same normalized outputs described at https://trendsmcp.ai/docs.
Create an HTTP Request node pointed at https://api.trendsmcp.ai/api, method POST, header Authorization Bearer YOUR_KEY, JSON body with the fields for get_trends or get_growth. Parse the JSON in a Function node, then route on growth thresholds or slope flags.
Batch keywords in a single planning sheet, run growth checks weekly instead of hourly unless a campaign is active, and cache responses in n8n data stores or an external database. Trends MCP counts successful data calls toward the plan; deduplicating keywords before the HTTP node keeps spend predictable.
Scraping templates chase DOM changes and CAPTCHA risk. Trends MCP returns structured series and growth metrics from a managed pipeline, which reduces maintenance for automations that only need the signal, not the raw HTML.
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