Sofiaplan

Overview

Sofiaplan is a free public API in the Open Data category. Access to urban research data for the Bulgarian capital Sofia.

This API belongs to the Open Data category, a popular area of the free-API ecosystem for builders.

You can use this API in prototypes, side projects, and production applications — just keep the provider’s usage policy in mind.

Authentication

Sofiaplan requires no authentication — you can start calling it directly, which makes it great for quick experiments and client-side demos.

HTTPS & CORS

• HTTPS: supported — traffic to Sofiaplan is encrypted, so it is safe to use from production apps.
• CORS: unknown — if you plan to call Sofiaplan from the browser, verify CORS support in the official docs or with a quick test request.

Getting Started

1. Read the official documentation: https://sofiaplan.bg/api/
2. Make a test request with curl or your favourite HTTP client.

Rate Limits & Notes

• Rate limits, quotas, and free-tier terms are defined by the provider — always check the official documentation for Sofiaplan before scaling up.
• The upstream listing is community-maintained; fields like auth, HTTPS and CORS reflect the state at listing time and may change.

FAQ

Does Sofiaplan require an API key?

No — Sofiaplan is listed as a no-auth API, so you can call it directly.