---
title: "NBP single-currency historical rates"
method: GET
path: "/api/v1/nbp/fx/history"
tags: ["Central Banks & Monetary"]
---

# NBP single-currency historical rates

`GET /api/v1/nbp/fx/history`

NBP fixings for a single currency across a date range. Weekends and Polish banking holidays are skipped silently. NBP caps each upstream query at 93 days; Sugra auto-chunks longer ranges server-side and merges the responses.

## Query parameters

- `table` string, required — Table code (A, B, or C).
- `code` string, required — Currency code (3-letter ISO 4217).
- `from` string, required — Start date (YYYY-MM-DD).
- `to` string, required — End date (YYYY-MM-DD).

## Response `200`

Sorted rate series for the requested currency across the requested window.

- EnvelopeNbpRateResponse
  - `data` NbpRateResponse, required — Latest / last-N / history response for a single currency on table A, B, or C.
    - `table` string, required — Source table code (A, B, or C).
    - `currency` string, required — Polish-language currency name as published by NBP.
    - `code` string, required — ISO 4217 three-letter currency code.
    - `rates` NbpHistoryRowC[], required — Per-day fixings in ascending effectiveDate order. A/B rows use `mid`; C rows use `bid`/`ask`.
      - `no` string, required — NBP table number (e.g. '074/C/NBP/2026').
      - `effectiveDate` string, required — Date the fixing applies (YYYY-MM-DD).
      - `bid` number, nullable — NBP buy (bid) rate in PLN per one unit of the currency.
      - `ask` number, nullable — NBP sell (ask) rate in PLN per one unit of the currency.
      - `mid` number, nullable — NBP mid rate (present when the single-currency endpoint returns Table A or B).
    - `count` integer, nullable — Number of observations returned (present for range queries).
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/revisions/4e2740743eb4/schema)