---
title: "Swedish treasury bill benchmarks (group 6)"
method: GET
path: "/api/v1/riksbank/tbills"
tags: ["Central Banks & Monetary"]
---

# Swedish treasury bill benchmarks (group 6)

`GET /api/v1/riksbank/tbills`

Swedish treasury bill benchmark rates. Active series: SETB1MBENCHC (1 month), SETB3MBENCH (3 months), SETB6MBENCH (6 months). SETB12MBENCH was closed in 2010.

## Response `200`

Latest Swedish T-bill benchmark rates.

- EnvelopeRiksbankTbillsData
  - `data` RiksbankTbillsData, required — Envelope body for /riksbank/tbills - group 6 (Swedish treasury bills).
    - `groupId` integer, required — SWEA group identifier (6 = Swedish T-bill benchmark rates).
    - `count` integer, required — Number of observations returned.
    - `observations` RiksbankGroupObservation[], required — Swedish treasury-bill benchmark yields (1M/3M/6M active, 12M closed).
      - `seriesId` string, required — SWEA series identifier.
      - `date` string, required — Observation date (YYYY-MM-DD).
      - `value` number, nullable, required — Observation value.
  - `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. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `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/d9a732d8e6be/schema)