A RESTful API built with Hono and TypeScript, deployed on Cloudflare Workers, providing information about world countries based on the REST Countries project data (v3.1).

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What can you do with this API?

This API allows you to easily integrate comprehensive and up-to-date country information into your applications and workflows. Whether you are building a website, an internal tool, or an analytical model, having access to reliable country data is essential.

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Use Cases

Here are some examples of how you can leverage this API:

  • E-commerce & Forms: Populate country selection dropdowns for shipping or billing addresses. Display country-specific details like common names.
  • Analytics & Dashboards: Enrich your data by adding country context. Segment users or visualize information geographically.
  • Travel & Information Sites: Show detailed information about countries, including capitals, regions, and population figures.
  • Educational Tools: Provide factual data about world countries for learning platforms, quizzes, or research.
  • User Registration: Standardize country data input during user signup processes.
  • Data Enrichment: Augment internal datasets with official country names, regions, or other details.

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Features

  • Fetch all countries or filter by name/region.
  • Select specific fields to include in the response (including nested fields).
  • Sort results by various fields (population, area, name, etc.) in ascending or descending order.
  • Flatten response for single-field requests.
  • Internationalized error messages (supports multiple languages via Accept-Language header).
  • Input validation using Zod.
  • Efficient data retrieval using preprocessed maps.
  • Edge caching via Cloudflare Workers Cache API for improved performance.