Checkout specification
Supported account flow and order actions agreed.
Offer PayPal through a checkout that keeps buyer approval and completed payment distinct. We link provider records to your orders and define the actions allowed by each state.
Start this brief
Supported account flow and order actions agreed.
Server-controlled amounts and provider identifiers connected.
Required provider responses and webhook verification handled.
Approval, completion, pending payment and repeat events tested.
Actual project screenshots. Some client interfaces are in their original language.

Home services in the United States. Actual project screenshots. Some client interfaces are in their original language.

Ecommerce platform. Actual project screenshots. Some client interfaces are in their original language.

Commercial interior projects. Actual project screenshots. Some client interfaces are in their original language.
We define the scope and prepare the agreed first prototype or work plan before payment.
You approve the prototype and pay 30%. We begin the agreed implementation.
We show the main pages and functions or agreed milestone deliverables. After acceptance, you pay the next 30%.
We finish the agreed checks and hand over the project, materials and access. You pay the remaining 40% after acceptance.
Scope agreed before work begins. All prices in USD. Applicable taxes and third-party fees are confirmed in the proposal.
We agree the scope and prepare the first prototype before the first payment. You can review the proposed structure and customer journey before deciding to proceed.
The agreed initial prototype covers the key page or customer journey. For SEO, advertising and other projects without an interface, the first reviewable result is a proposed work plan. The number of screens and revisions is agreed in the brief.
You approve the prototype or work plan and pay 30% of the agreed project price. We then begin implementation.
We demonstrate the agreed main pages and functions, or the named project deliverables. Once you accept this milestone, the next 30% is due.
We complete the agreed checks, deliver the project and hand over the agreed materials and access. The remaining 40% is paid after acceptance.
This schedule applies to projects with a fixed scope. Monthly work and small hourly tasks have separately agreed terms. Advertising spend, hosting, licences and third-party fees are listed separately in the proposal.
We deliver remotely. Briefing, reviews and handover take place online, with the meeting times and working language agreed in advance.
Scope, selection criteria and practical delivery details.
Buyer approval is not the same as completed capture. We map the PayPal flow and the point at which your business may fulfil the order.
Amounts, currency and order references are checked on the server. Available methods depend on your account and the selected integration.
The buyer may close the page or a payment may remain pending. Provider responses and verified notifications keep the order state independent of that return.
Refunds, authorisation-only flows and subscriptions have distinct rules. They are included when specified, not assumed from adding a PayPal button.
We check cancellations, pending states and repeated events as well as successful payment. Staff should see the relevant provider reference.
Vladimir Nikolaev reviews sandbox and live configuration with you. PayPal charges and account approval remain separate from development.

CEO and web development & SEO expert. Web developer and SEO specialist since 2015. Vladimir Nikolaev reviews data rules, implementation choices and acceptance checks with you, so the technical work follows a defined business task.
Answered by Vladimir Nikolaev.
Not by itself. The integration checks the payment or capture state required by the chosen flow.
Yes, after reviewing its capabilities and configuration.
They can be scoped with administrator actions and order-state rules.
No. Provider fees are separate from the implementation estimate.

Give your team one place to manage requests, records and approvals. We build browser applications around the work people actually do, with clear access rights and a practical first release.

Add the function your website is missing without rebuilding the whole system. We develop extensions with a defined job, manageable settings and checks against your current platform.

Help buyers estimate a service or configure a product before they contact you. We turn your pricing rules into a clear calculation, with useful explanations and a route to a qualified enquiry.
Send your platform and the action a confirmed payment should trigger. We will define checkout and acceptance cases.