Automate Primer Design with Primer3 HTTP API

Yes, you can cancel your subscription at any time. If you choose to cancel, your access to the service will continue until the end of the current billing period. There are no additional charges or long-term commitments.

No, we don’t offer refunds but you can cancel your plan whenever you want with no conditions.

Yes, you can use the API in commercial projects. Paid plans are designed for companies that need to integrate Primer3 technology into their applications or services, both for internal use and to offer to their own customers.

Any Primer3 API user can access support via email. Basic and Premium plan users will have priority over Free plan users. You can also always consult the documentation for help.

If you reach your plan’s request limit, the API will stop processing new requests until the next month starts. If you need more requests before the next month starts, you can upgrade your plan at any time.

Yes, the API is completely language-agnostic, as it works over HTTP and JSON. You can integrate it into any language that supports HTTP requests, such as Python, JavaScript, Java, Ruby, PHP, etc.

We won’t delete the API keys you already have, but you won’t be able to create new API keys.