---
title: "Single country's S124 historical timeseries (stock + flow)"
method: GET
path: "/api/v1/ecb/shs/by-country/{slug}"
tags: ["Hedge Fund Intelligence"]
---

# Single country's S124 historical timeseries (stock + flow)

`GET /api/v1/ecb/shs/by-country/{slug}`

Full historical S124 debt-holding timeseries for one country, split between stock observations (closing-balance positions) and flow observations (quarterly transactions). Slug is 2-char lowercase: `at`, `de`, `fr`, `lu`, `ie` etc. for euro-area members; `u2` for the euro-area aggregate. Both timeseries are sorted by period descending (latest first). Stock and flow are reported separately because flow excludes valuation effects.

## Path parameters

- `slug` string, required

## Response `200`

Single country's full S124 timeseries.

- EnvelopeEcbShsCountryProfile
  - `data` EcbShsCountryProfile, required — Single country's full S124 historical timeseries (stock + flow split).
    - `country` string, required
    - `name` string, required
    - `stock_history_length` integer, required — Number of quarterly stock observations available.
    - `flow_history_length` integer, required — Number of quarterly flow observations available.
    - `stock_history` EcbShsHistoryEntry[], required
      - `period` string, required — Quarter in 'YYYY-Q[1-4]' format.
      - `value_eur_mn` number, required — Value in EUR millions.
      - `instrument` string, required — Instrument class. Currently only 'debt' (F3 in SDMX) for S124.
      - `stock_flow` string, required — 'stock' = closing balance / position; 'flow' = transaction value over the quarter.
    - `flow_history` EcbShsHistoryEntry[], required
      - `period` string, required — Quarter in 'YYYY-Q[1-4]' format.
      - `value_eur_mn` number, required — Value in EUR millions.
      - `instrument` string, required — Instrument class. Currently only 'debt' (F3 in SDMX) for S124.
      - `stock_flow` string, required — 'stock' = closing balance / position; 'flow' = transaction value over the quarter.
  - `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)