--- title: "Banco GNB Paraguay Exchange Rate API: PYG Buy and Sell Rates as JSON" description: "Banco GNB Paraguay's home banking (electronic) buy / sell rates for 2 currencies against the Paraguayan guarani, read hourly from the bank's own page and served as JSON with the Banco Central del Paraguay official rate alongside. REST, JavaScript and Python examples." canonical: https://allratestoday.com/blog/banco-gnb-paraguay-exchange-rate-api/ source: AllRatesToday (https://allratestoday.com/) — Markdown mirror of the page above; index of all pages at https://allratestoday.com/llms.txt generated: 2026-11-15T19:06:05.012Z --- Banco GNB Paraguay is the Paraguayan bank of the Colombian GNB Sudameris group. Its home page lists cash and home-banking buying and selling prices for the US dollar and euro. This guide shows how to read that board as JSON: what the rates mean, how they compare with the Banco Central del Paraguay official rate and with other banks in Paraguay, and the calls that return them. ## What the GNB board shows - **2 currencies against the Paraguayan guarani**: EUR and USD. Every value is PYG per 1 unit of the foreign currency. - **The home banking (electronic) buy / sell pair.** Paraguayan banks quote whole guaraníes per US dollar, euro and Brazilian real, often with separate cash, cheque and online-banking prices. The Banco Central del Paraguay publishes a daily reference rate. The Banco Central del Paraguay official rate is shown next to each row. - **USD on 15 November 2026**: GNB bought at 6110 and sold at 6310 PYG, a spread of 3.22%. The Banco Central del Paraguay official rate was 6215.89, so the bank's mid sat -0.10% from it. - **No timestamp on the bank's page.** GNB does not print a last-updated time, so `bank_updated_at` is `null` and `captured_at` (when AllRatesToday read the page) is the only time available. - **Every day's board is kept permanently, from 15 November 2026, the day collection started.** Read one past day with `?date=`, or a range for one currency with the `/history` endpoint (paid plans). ## Spreads across the board On the 15 November 2026 board the spreads were USD 3.22%, EUR 8.44%. Spread is (sell − buy) ÷ mid: what a round trip through the bank costs, before any fees. The API returns it on every row as `spread_pct`, so you can rank currencies or alert when a bank widens its board. ## USD at GNB and other banks in Paraguay USD on the 6 boards AllRatesToday reads in Paraguay, all captured on 15 November 2026 (the Banco Central del Paraguay official rate was 6215.89): | Bank | Buy | Sell | Spread | Mid vs official | | --- | --- | --- | --- | --- | | Banco Atlas | 6100 | 6300 | 3.23% | -0.26% | | Banco Basa | 5970 | 6340 | 6.01% | -0.98% | | Banco Familiar | 6000 | 6310 | 5.04% | -0.98% | | **Banco GNB Paraguay** | 6110 | 6310 | 3.22% | -0.10% | | Solar Banco | 5900 | 6300 | 6.56% | -1.86% | | ueno bank | 5800 | 6070 | 4.55% | -4.52% | GNB had the narrowest USD spread of the 6. One call to `/api/v1/bank-rates/py` returns every board in the table at once. ## Get the board (REST) You need an API key; the [free key](https://allratestoday.com/register/) works. The full board: ``` curl "https://allratestoday.com/api/v1/bank-rates/py/gnbpy" \ -H "Authorization: Bearer art_live_your_key" ``` What comes back (the 15 November 2026 board, first three rows): ``` { "bank": "gnbpy", "name": "Banco GNB Paraguay", "country": "py", "quote_ccy": "PYG", "bank_updated_at": null, "basis": "Home banking (electronic) buy / sell", "captured_at": "2026-11-15T11:46:25.430Z", "rates": [ {"ccy":"EUR","buy":6580,"sell":7160,"mid":6870,"spread_pct":8.443,"official":6867.94,"vs_official_pct":0.03}, {"ccy":"USD","buy":6110,"sell":6310,"mid":6210,"spread_pct":3.221,"official":6215.89,"vs_official_pct":-0.095} ], "disclaimer": "…", "attribution": { … } } ``` One currency, with the row fields at the top level: ``` curl "https://allratestoday.com/api/v1/bank-rates/py/gnbpy?ccy=USD" \ -H "Authorization: Bearer art_live_your_key" ``` ``` { "bank": "gnbpy", "name": "Banco GNB Paraguay", "country": "py", "quote_ccy": "PYG", "bank_updated_at": null, "basis": "Home banking (electronic) buy / sell", "captured_at": "2026-11-15T11:46:25.430Z", "ccy": "USD", "buy": 6110, "sell": 6310, "mid": 6210, "spread_pct": 3.221, "official": 6215.89, "vs_official_pct": -0.095, "disclaimer": "Retail buy/sell rates as displayed on each bank’s own website at capture time, quoted as home currency per 1 unit of foreign currency. Indicative only: banks change these through the day, apply them at the counter or in-app, and they are not official or reference rates. For the rate a regulation names, use the central-bank endpoints.", "attribution": { "source": "Board rates published by Banco GNB Paraguay on its own website, collected by AllRatesToday", "bank_url": "https://www.bancognb.com.py/", "url": "https://allratestoday.com/bank-exchange-rate-api/py/gnbpy/", "terms": "Public pages that show the rates need a visible link to allratestoday.com" } } ``` The board as it stood on a past day: ``` curl "https://allratestoday.com/api/v1/bank-rates/py/gnbpy?date=2026-11-15" \ -H "Authorization: Bearer art_live_your_key" ``` One currency over a date range, one row per day (paid plans; add `&format=csv`, `xml` or `xlsx` for a file): ``` curl "https://allratestoday.com/api/v1/bank-rates/py/gnbpy/history?ccy=USD&from=2026-11-15&to=2026-11-15" \ -H "Authorization: Bearer art_live_your_key" ``` ## JavaScript ``` npm install @allratestoday/sdk ``` ``` import { AllRatesToday } from '@allratestoday/sdk'; const client = new AllRatesToday({ apiKey: 'art_live_your_key' }); // Banco GNB Paraguay's USD row const r = await client.bankRates('py', { bank: 'gnbpy', ccy: 'USD' }); console.log(`GNB buys USD at ${r.buy}, sells at ${r.sell} PYG`); // The board as it stood on a past day const past = await client.bankRates('py', { bank: 'gnbpy', date: '2026-11-15' }); console.log(past.snapshot_date, past.rates.length); ``` ## Python ``` import requests r = requests.get( "https://allratestoday.com/api/v1/bank-rates/py/gnbpy", headers={"Authorization": "Bearer art_live_your_key"}, timeout=10, ) r.raise_for_status() for row in r.json()["rates"]: print(row["ccy"], row["buy"], row["sell"], row["spread_pct"]) ``` ## Board rate or official rate? The Banco Central del Paraguay rate is the one tax, accounting and customs rules in Paraguay name; nobody transacts at it. GNB's board is the price a customer actually gets. The API puts both on every row: `official` is the central bank's rate for the same currency and `vs_official_pct` is how far the bank's mid sits from it. Use the board to show customers a real price, compare banks for a remittance, or keep a dated record of what the bank quoted; use the [Banco Central del Paraguay endpoint](https://allratestoday.com/central-bank-rates-api/bcp/) when a rule asks for the official rate. ## FAQ ### Where do the Banco GNB Paraguay rates come from? From the bank's own public rates page (https://www.bancognb.com.py/), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price GNB shows, with the mid, the spread and the Banco Central del Paraguay rate added. ### Are these the official PYG exchange rates? No. They are GNB's retail prices for customers. The official rate in Paraguay is the Banco Central del Paraguay rate, which the API returns as `official` on each row where the central bank has one, and in full from the central-bank endpoint. ### How often is the GNB board updated? AllRatesToday reads the page every hour. The bank prints no timestamp, so `captured_at` tells you when the rates were read. ### Can I get GNB rates for a past date? Yes, from 15 November 2026 onward; every day's board is kept permanently. Add `?date=YYYY-MM-DD` for one day: the response is the board captured that day, or the nearest earlier day within five days, with `date_requested` and `snapshot_date` added. For a range, `/history?ccy=USD&from=…&to=…` returns one row per day as JSON, CSV, XML or XLSX on paid plans. ### Do I need an API key? Yes. Commercial bank boards need an API key; any plan works, the free key included, and each call counts against the plan. Public pages or widgets that show the rates need a visible link to allratestoday.com. ## Banco GNB Paraguay rates, as JSON Free API key, hourly board captures, the official rate alongside. [Get your free API key](https://allratestoday.com/register/) ## Related - [Banco GNB Paraguay live board rates](https://allratestoday.com/bank-exchange-rate-api/py/gnbpy/) - [All banks in Paraguay side by side](https://allratestoday.com/bank-exchange-rate-api/py/) - [Banco Central del Paraguay official rates API](https://allratestoday.com/central-bank-rates-api/bcp/) - [Banco Atlas exchange rate API guide](https://allratestoday.com/blog/banco-atlas-exchange-rate-api/) - [Banco Basa exchange rate API guide](https://allratestoday.com/blog/banco-basa-exchange-rate-api/) - [Banco Familiar exchange rate API guide](https://allratestoday.com/blog/banco-familiar-exchange-rate-api/) - [Solar Banco exchange rate API guide](https://allratestoday.com/blog/solar-banco-exchange-rate-api/) - [ueno bank exchange rate API guide](https://allratestoday.com/blog/ueno-bank-exchange-rate-api/) - [Every bank exchange rate API guide, by country](https://allratestoday.com/blog/bank-exchange-rate-api-guides/) - [Commercial bank rates API: every bank and country](https://allratestoday.com/bank-exchange-rate-api/)