開發人員友善的 API
Cardflo 的 API 是為開發人員設計的，優先考慮易用性、全面的文檔和強大的功能。 這確保了流暢的集成過程，讓您的團隊能夠快速部署和管理支付解決方案。
專注於創新，而不是集成挑戰。
- 類別
- 開發者
- 功能數
- 10
- 適用於
- 所有方案
概覽
A developer-friendly API serves as the primary interface between a merchant's digital infrastructure and the broader payments ecosystem. In the B2B sector, this means providing RESTful endpoints that allow for the programmatic execution of authorisations, captures, and refunds.
The architecture must account for complex data structures required by Card-Not-Present transactions, including 3DS metadata and Level 2 or Level 3 purchase details.
Effective API design prioritises idempotent requests to prevent duplicate transactions and utilises standard HTTP status codes to communicate the state of a request.
Beyond simple payment processing, these interfaces facilitate the management of recurring billing schedules, vaulting of tokenised credentials, and the retrieval of settlement reports.
By integrating directly at the API level, businesses can maintain full control over the checkout experience while delegating sensitive data handling to a PCI-DSS compliant environment. This structural approach reduces technical debt and ensures that backend systems remain synchronised with the acquirer's ledger.
運作方式
Authentication and Credential Security
The integration begins by authenticating requests using secret keys or OAuth tokens transmitted over TLS. Developers configure webhooks to receive asynchronous notifications for events such as successful settlements or dispute initiations.
This ensures that the merchant's internal database stays aligned with the status of every transaction without constant polling of the server.
Request Construction and Validation
Developers construct JSON payloads containing transaction amounts, currency codes, and payment instrument details. The API validates these inputs against schema requirements before attempting authorisation.
Detailed validation errors are returned immediately if mandatory fields, such as the CVV or account holder name, are missing or incorrectly formatted for the specific MCC.
Idempotency and Resilience Testing
To handle network instability, the API employs idempotency keys. If a request is retried due to a timeout, the system recognises the unique key and returns the original response rather than creating a duplicate charge.
This logic is typically verified within a sandbox environment using simulated response codes for various scenarios.
Response Handling and Error Mapping
Upon receiving a response from the issuer, the API maps complex bank response codes into standardised, actionable categories.
Developers use these categorised codes to trigger specific workflows, such as prompting the user for a different payment method after a hard decline or initiating a 3DS challenge for a soft decline.
為何重要
Reduced Integration Latency
Well-structured APIs with comprehensive documentation and native SDKs allow engineering teams to move from initial configuration to a functional sandbox in a shorter timeframe. By providing clear definitions for every endpoint and field, the need for back-and-forth support queries is minimised.
This efficiency ensures that payment logic can be deployed alongside core product features without becoming a bottleneck for the broader development lifecycle.
Operational Stability and Debugging
Detailed logging and transparent error messaging are critical for maintaining high uptime in production environments. When an API provides granular feedback on why a transaction failed, such as specific BIN-related restrictions or SCA requirements, developers can automate the appropriate response.
This reduces the manual overhead for finance and support teams who would otherwise need to investigate vague decline reasons via an acquirer portal.
Scalable Payment Architecture
As a business expands into new markets or adopts new business models, a flexible API allows for the addition of alternative payment methods and multi-currency support without rewriting the entire integration.
Standardised objects for customers, subscriptions, and payment methods allow developers to build modular systems that can adapt to changing regulatory requirements like PSD3 or evolving scheme rules from Visa and Mastercard.
應用案例
SaaS Subscription Scaling
Technical teams at SaaS firms use the API to automate complex dunning cycles and subscription upgrades. Programmatic access to the vault allows for seamless billing shifts as customers change tiers.
Marketplace Payout Automation
Marketplace platforms integrate APIs to split payments between vendors and calculate commissions in real-time. This ensures that KYB-verified sub-merchants receive settlements according to their specific contractual terms.
Custom Mobile Checkout
Mobile developers use specific SDKs to build bespoke checkout flows that trigger 3DS authentication natively. This maintains brand consistency while ensuring sensitive card data never touches the merchant's own servers.
ERP System Synchronisation
Large enterprises connect their ERP systems directly to the payments API to automate bank reconciliation. Transaction metadata is used to close out open invoices automatically upon receiving a settlement notification.
數據概覽
Typical efficiency gains reported by engineering teams when switching from legacy SOAP interfaces to modern RESTful APIs with comprehensive SDKs.
The standard industry benchmark for gateway overhead per request, excluding downstream latency introduced by the card networks and issuing banks.
The observed reliability rate for preventing duplicate transactions in high-volume environments where network retries are common.
相關術語
Talk to our team about a live rollout on your acquiring stack.
What you get with 開發人員友善的 API
- 清晰、簡潔和最新的 API 文檔。
- 多個流行語言的 SDK（Python、Ruby、Node.js、PHP、Java）。
- 用於測試和開發的沙盒環境，無需實時交易。
- 一致的 API 設計，實現可預測和直觀的交互。
- 詳細的錯誤代碼和訊息，實現高效調試。
- 響應迅速的開發人員支持，用於集成協助。
- Standardised error objects with specific codes and human-readable messages for rapid troubleshooting.
- Versioned API releases to ensure backward compatibility and controlled migration to new features.
- PCI-compliant tokenisation endpoints to minimise the scope of annual security audits and assessments.
- Support for custom metadata fields to facilitate easier reconciliation with internal business intelligence tools.
A short scoping call, then a written plan for your MIDs.
Questions about 開發人員友善的 API
為開發人員提供了哪些資源？
Cardflo 提供全面的 API 文檔，包括請求和響應示例、身份驗證指南和用例場景。 我們還為流行的編程語言提供 SDK，以及一個專門的沙盒環境，用於測試集成，而不會影響實時數據或資金。
我在集成期間如何獲得支持？
開發人員可以通過我們的專門技術文檔、社區論壇和直接電子郵件支持渠道獲得支持。 我們經驗豐富的工程師團隊隨時準備協助解決集成查詢、故障排除和最佳實踐指導，以確保成功部署。
API 在不同的支付功能之間是否一致？
是的，Cardflo 的 API 在其所有端點中保持一致的結構和命名約定。 這種一致性減少了開發人員的學習曲線，使得集成各種支付功能（從交易處理到訂閱管理）以及可預測的結果變得更容易。
How are error codes structured for debugging purposes?
Errors are returned using standard HTTP status codes combined with a JSON body containing a specific error type and code. For example, a 400 Bad Request might include a code for 'invalid_cvv', while a 402 Payment Required might indicate a 'card_declined' event from the issuer.
This hierarchy allows developers to distinguish between client-side integration issues, such as missing parameters, and downstream financial issues, such as insufficient funds, allowing for automated and specific error handling in the user interface.
What security measures protect the API from unauthorised access?
Security is maintained through a multi-layered approach starting with mandatory TLS 1. 2 or higher for all communication.
Authentication is managed via API keys which should be restricted to server-side calls to prevent exposure in client-side code. Additionally, IP whitelisting can be configured for sensitive endpoints, and webhooks are often signed with a cryptographic signature.
This allows the merchant's server to verify that the notification truly originated from the payments gateway and has not been tampered with in transit.
Does the API support custom metadata for reconciliation?
The API allows for the inclusion of custom metadata objects within payment and customer resources. Developers can attach internal identifiers, such as invoice numbers or customer IDs from an external CRM, to the transaction record.
This metadata is not passed to the card schemes but remains associated with the transaction within the gateway and reporting systems. This facilitates automated reconciliation, as these identifiers can be retrieved via the API or included in scheduled CSV settlement exports.