The best integration SDKs in 2026

Building an AI agent that manages tasks across multiple platforms, such as Salesforce, Gmail, and Slack, requires not only the development of the feature but also the integration of various APIs, including handling OAuth flows, token storage, and credential management. To streamline these processes, integration SDKs offer solutions that manage authenticated access to external APIs without requiring developers to handle OAuth flows themselves. These SDKs are categorized into two models: the embedded integration model, which allows user-facing integrations where users connect their accounts, and the autonomous agent model, where the developer also acts as the user, managing credentials internally. Zapier is highlighted as a versatile tool that supports both models, offering a vast library of app connections and handling OAuth processes, making it an attractive option for organizations looking to standardize on a single platform. Other SDKs like Nango, Composio, and Pipedream are also discussed, each catering to different integration needs, such as self-hosting, framework-native development, and embedded-only integrations, respectively. These tools vary in catalog size, setup complexity, and pricing, but all aim to reduce the integration workload for developers by providing a more efficient way to manage API interactions.