---
title: "Single FX pair vs NOK"
method: GET
path: "/api/v1/norges-bank/fx/{pair}"
tags: ["Central Banks & Monetary"]
---

# Single FX pair vs NOK

`GET /api/v1/norges-bank/fx/{pair}`

Business-daily spot rate for one base currency (ISO 4217 alpha-3 code) against NOK. Source: EXR dataflow, key B.{pair}.NOK.SP.

## Path parameters

- `pair` string, required — Base currency (ISO 4217 alpha-3 code).

## Query parameters

- `last_n` integer — Return last N daily observations.

## Response `200`

Time series for the requested currency pair.

- EnvelopeListNorgesBankFxDatum
  - `data` NorgesBankFxDatum[], required
    - `DECIMALS` string, nullable — Number of decimal places reported by the source.
    - `COLLECTION` string, nullable — SDMX collection indicator (e.g. end-of-period, average).
    - `UNIT_MULT` string, nullable — SDMX unit multiplier code (0 = units, 3 = thousands, 6 = millions).
    - `CALCULATED` string, nullable — Flag indicating whether the value is calculated or directly observed.
    - `CALC_METHOD` string, nullable — Calculation method code for observation-level attributes.
    - `FREQ` string, required — Frequency (B=business daily, M=monthly, A=annual).
    - `FREQ_name` string, required — Frequency label.
    - `BASE_CUR` string, required — Base currency (the currency being priced).
    - `BASE_CUR_name` string, required — Base currency name.
    - `QUOTE_CUR` string, required — Quote currency (always NOK for Norges Bank official rates).
    - `QUOTE_CUR_name` string, required — Quote currency name.
    - `TENOR` string, required — Tenor code (SP=spot).
    - `TENOR_name` string, required — Tenor label.
    - `TIME_PERIOD` string, required — Observation date.
    - `value` union — NOK per unit of base currency (for JPY/SEK/DKK: NOK per 100 units).
      - number
      - integer
      - string
  - `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/versions/4e2740743eb4/schema)