Free Authentication & IAM APIs

Universal identity provider: OAuth 2.0, SSO, multi-factor auth, and user directories

Passwordless authentication APIs: magic links, passkeys, WebAuthn, and SMS OTP

Fine-grained authorization, role-based access control (RBAC), and permissions API

Passwordless authentication platform offering magic links and SMS OTP codes

Instant two-factor one-time password (OTP) verification and SMS delivery

Open-source encrypted password management vault and credential sync API

Customer identity and access management (CIAM) platform with social sign-in

API-Colombia is a public RESTful API that provides access to a wide range of data about Colombia, including information on departments, regions, and tourist attractions. Users can explore public information without the need for authentication, making it easy to discover diverse aspects of the country.

Sanchar DB transforms your Firebase Realtime Database into a straightforward REST API, allowing users to read, write, check, and delete data through simple HTTP requests. It eliminates the need for SDKs or authentication headers, providing a clean interface available via Cloudflare Workers.

Allows users to convert any HTML source code into a downloadable PDF file. It is a free service that requires no authentication and can be easily integrated into applications using a simple HTTP POST request.

This API provides open access to the Spanish Mercantile Registry Bulletin (BORME) data, enabling users to search for companies and individuals, retrieve detailed reports, and analyze business activities without requiring authentication. It supports a wide array of endpoints for searching, exporting data, and retrieving various statistics related to companies and their associated events.

Full stack RESTful API for entity lists, single entity access, and complex query built requests. Public API with versioning and no user authentication.

Provides various endpoints to access rosary prayers for different days and occasions in JSON format. No authentication required for usage.

The We > Ultrarich API provides interactive references to understand extreme wealth by expressing it through daily spending, physical size, purchasing power, and compound interest. It allows users to grasp the scale of wealth inequality and make comparisons using a variety of metrics.

The Yadore Publisher API provides endpoints for accessing product offers, deeplinks, and smartlinks from various merchants. It supports functionalities such as searching for offers, retrieving lists of active merchants, and obtaining conversion reports.

civicAPI is a free API that provides real-time election results, polling data, and general election information. It's open to the public and does not require authentication, serving both personal and commercial needs with appropriate attribution.

User management and authentication

Simplify login and improve user experience by integrating passwordless authentication in your app