Build with Loops
Use the REST API, SDKs, webhooks, or the Loops MCP server to connect product data and send email.
API and SDKs
Start with the API quickstart, then use the OpenAPI 3.1 contract or an official SDK. Webhooks keep your application in sync with delivery and contact activity.
Agent integrations
Connect Loops to Claude, ChatGPT, Codex, or another compatible client through the remote MCP server. The setup guides cover the hosted endpoint, OAuth flow, and example tasks.
Authentication and errors
The REST API uses bearer API keys created in the Loops dashboard. Unauthenticated requests return structured JSON with HTTP status codes. The MCP server uses OAuth 2.0 authorization code flow with PKCE and the mcp scope.
Start building
Create a free Loops account, generate an API key, and send your first request. No credit card is required to start.