API archive entry · source-reported
National Bank of Poland
A collection of currency exchange rates (data in XML and JSON)
Decision snapshot
National Bank of Poland is catalogued as a Currency Exchange API from National Bank of Poland. The directory reports no auth authentication, HTTPS support, and CORS as yes.
- Category
- Currency Exchange
- Authentication
- No auth
- HTTPS
- Reported
- CORS
- Yes
Evaluation pathway
- Define endpoints, fields, freshness, and expected request volume.
- Read the live source and confirm access, terms, limits, and version.
- Test representative inputs, errors, latency, pagination, and data quality.
- Plan monitoring, retries, caching, version pinning, and a fallback.
What still needs verification
Pricing and quotas
Confirm current plans, free-tier limits, overages, and request ceilings.
Endpoint coverage
Check that the operations and response fields match the intended workload.
Reliability
Look for uptime history, a status page, support routes, and service commitments.
Data and privacy
Review retention, licensing, regional processing, and compliance requirements.
Versioning
Confirm the active version, change policy, deprecation window, and migration guidance.
Developer experience
Validate SDKs, examples, error formats, pagination, and test environments.
Nearby Currency Exchange options
api-mint
Free utility APIs: timezone, forex rates, crypto prices, page metadata
No auth · HTTPS reported · CORS Yes
Currency-api
Free Currency Exchange Rates API with 150+ Currencies & No Rate Limits
No auth · HTTPS reported · CORS Yes
Frankfurter
Exchange rates, currency conversion and time series
No auth · HTTPS reported · CORS Yes
Source reference
This page separates source-reported facts from questions that need live provider verification.