API Key Authentication has arrived...

Introducing API Keys

You can now authenticate with the Keyword Insights API using long-lived API keys, available to Premium plan users at no additional cost.

Unlike Bearer tokens, API keys do not expire and are purpose-built for scripts, automations, and third-party integrations like n8n, Make, or custom Python workflows.

What’s new:

You can generate and manage API keys directly from the API Keys section in your dashboard.

Each key is displayed once at creation, so make sure to store it securely. Once saved, you authenticate by passing the key in the X-API-Key header with every request, replacing the previous Authorization: Bearer header.

It is a one-line change in your existing code.

A note on Bearer tokens:

Bearer token authentication continues to work and we are not setting a hard deadline for removal.

That said, we strongly encourage all users to migrate to API keys at their earliest convenience, as Bearer tokens are now deprecated and will eventually be phased out.

Full documentation is available here: https://docs.keywordinsights.ai/api/api-key-authentication