Currency Exchange · head-to-head
National Bank of Poland vs paralelo.bo
The National Bank of Poland's Web API exposes the official mid-market currency reference rates it publishes daily across three rate tables, plus historical gold-price fixings dating back to January 2013 — all queryable by date, currency code, or table series via plain HTTP GET. Responses come back in JSON or XML depending on a format parameter, though historical range queries are capped at 93 days per request. The bank retired plain HTTP in August 2025 in favor of HTTPS-only access.
paralelo.bo is an independent community project that tracks Bolivia's informal "parallel" USD/BOB exchange rate by aggregating P2P listings from several crypto exchanges every 60 seconds, exposing the median rate alongside individual buy/sell prices and spreads. Beyond a standard JSON endpoint, it offers a plain-text single-value route built for shell pipelines, CSV/JSON historical series, and — unusually for a niche regional FX tracker — an MCP interface aimed at AI-agent integrations. Data is published under CC-BY 4.0 with no key or registration required.
| National Bank of Poland | paralelo.bo | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, XML | JSON, CSV, Plain Text |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
paralelo.bo supports 3 response formats, while National Bank of Poland offers fewer — pick paralelo.bo for more integration flexibility.