SDKs & client libraries

Use the HTTP client you already know. You can call mintfax from any language; the API uses REST and JSON, with multipart file uploads when you send a fax. There are no official mintfax SDK packages.

Examples

LanguageHTTP clientGuide
Node.jsNative fetchNode.js guide
ShellcurlQuickstart

The Node.js example uses native fetch and verifies webhooks with node:crypto, so even the signature check uses the standard library. Both guides call the API directly.

Generate a client

The OpenAPI 3.1 specification describes the endpoints, parameters, and response formats. You can use a generator that supports OpenAPI 3.1 to create a client for your language.

Get started

Follow the quickstart to register, verify your email, and send a sandbox fax. See authentication for sandbox and live API keys.

START HERE

Try sending a fax in the sandbox.

Test the API with simulated deliveries before sending real faxes. The sandbox is free and does not require a credit card.

SANDBOXFree
SPECOpenAPI 3.1
CREDIT CARDNot required
WEBHOOKSSigned
ERRORSDocumented