# SUBSCRIPTION - [What are the differences between subscriptions plan](https://docs.darkbot.io/subscription/what-are-the-differences-between-subscriptions-plan.md): Learn more about our subscriptions - [How to activate a trial period](https://docs.darkbot.io/subscription/how-to-activate-a-trial-period.md): Get to know darkbot with a trial period - [Subscribing to a Standard or Premium Plan](https://docs.darkbot.io/subscription/subscribing-to-a-standard-or-premium-plan.md): How to Purchase a Standard or Premium Subscription: Step-by-Step Guide - [Upgrading or Downgrading Subscription Plans](https://docs.darkbot.io/subscription/upgrading-or-downgrading-subscription-plans.md): How to Upgrade or Downgrade Your Subscription: Enhance Your Membership - [How to cancel your subscription plan](https://docs.darkbot.io/subscription/how-to-cancel-your-subscription-plan.md): Canceling Your Subscription: Step-by-Step - [What happens after your active subscription expires](https://docs.darkbot.io/subscription/what-happens-after-your-active-subscription-expires.md): Life After Subscription Ends: What's Next --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.darkbot.io/subscription.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.