Clear expectations.
Room to learn.

What the lab provides

The free introduction contains three browser-based lessons in API testing: making a contract testable, finding boundary errors, and preparing release evidence. It uses a deterministic teaching simulator and learning exercises. Saved practice results are recomputed on the server. The examples do not process real orders or prove that a production service is secure or ready to launch.

The lab is an educational resource. Completion is not an accredited qualification, professional license, certification or employment guarantee. You are responsible for reviewing and validating how you apply what you learn.

Accounts and access

Public course discovery is available without signing in. Exercises, assessments and saved work require an account, including free activities. Accounts use an email sign-in link. Use an email address you control, keep sign-in links private, and contact us if you believe someone else has accessed your account.

Saved drafts, practice evidence and recent runs are associated with your account across devices. A failed save does not confirm completion. Keep the page open and retry until the interface confirms your changes are saved. Account activities are unavailable when the required service is unavailable. You may explicitly import your own old browser drafts; imported completion claims are not assessed evidence.

Assessments and achievement records

Skills assessments are unproctored learning checks. The assessment instructions explain scoring, time limits, saved answers and retake limits before you begin. Scores are calculated on the server from the assigned version of the questions. Each assessment describes the achievement threshold.

An Engineer Africa achievement verifies a recorded assessment result. It is not an accredited qualification, professional certification, identity check, independent examination or promise of employer recognition. Course completion records and assessment achievements are different. Public sharing is optional; you may disable it in your assessment history or ask us to review or revoke a credential.

Optional prepaid credits

Where checkout is enabled, you can choose a prepaid pack of bounded AI explanation requests. Current pack prices and included credits are shown on the pricing page and confirmed at checkout. These are one-time purchases with no automatic renewal or automatic top-up.

A credit is a unit of access to the explanation feature described in the interface. It is not money, a transferable balance, or unlimited AI access. Each request is subject to input, output and usage limits. Buying credits does not make the free curriculum larger or create access to unadvertised courses.

Payments become available only when the supporting account, payment and AI services are enabled. Credit purchases support the delivery and development of Engineer Africa's education program. They purchase a service and are not presented as charitable donations.

Organization report credits

An accepted organization owner or administrator can purchase shared report credits when checkout is available. Each pack contains one credit for its selected report type: Contracts at $15 USD, Proof at $10 USD or BuildCost at $19 USD. These are one-time service purchases, with no automatic renewal or top-up. Monthly tool subscriptions remain personal.

A manager must explicitly authorize each member who may spend organization credits, including themselves. Credits belong to the purchasing organization even if the purchaser leaves. A credit pays for an export the member already has permission to access; it does not share a private report, transfer its ownership or grant access to another account's work. JSON source exports remain free.

PayPal shows payment details before approval and issues the payment receipt. Approval or a return to this website does not itself confirm payment. Organization billing records the purchase status, purchaser and credit use. If a purchase or export is interrupted, check its saved original before starting another purchase. See the refund policy for unused credits, duplicate payments and service problems.

Using AI explanations

AI explanations are optional and may contain mistakes. Check important claims against the lesson and your test results. Do not submit sensitive personal information, passwords, private keys or material you do not have permission to share.

If a request fails or a charge appears incorrect, contact us so we can review the request and credit record. The refund policy explains the process for unused credits and service problems.

Respectful and appropriate use

Use the lab for learning and authorized practice. Do not attempt to access another person's account, bypass credit limits, disrupt the service, submit malicious material or test external systems without permission. We may restrict access needed to address abuse or protect the service, and you can contact us to ask about an access problem.

You retain rights in your own original submissions. By submitting a question or saving progress, you allow us and the relevant service providers to process that information to provide the requested feature. Our privacy notice explains those uses.

Availability and changes

We may correct lessons, improve features or temporarily interrupt a service for maintenance. Future purchases use the price and offer shown at their checkout. If we discontinue a paid feature while you have unused credits, contact us for a refund of the unused portion under our refund policy.

These terms do not remove rights or remedies that apply under law. Questions about access, a purchase or these terms can be sent to contact@engineerafrica.org.