---
title: "Data-source licensing & attribution catalogue"
method: GET
path: "/data-sources"
tags: ["data-sources"]
---

# Data-source licensing & attribution catalogue

`GET /data-sources`

Returns the licensing and attribution catalogue for every data source.
Public — no API key required.

Use this to render the credits your application must display. Sources
under open licenses that require attribution (CC-BY, OGL v3.0, ODbL,
NLOD, Licence Ouverte, DL-DE→BY) carry the exact credit string in
`attribution`. List responses (`/events`, `/features`) also embed an
inline `attribution[]` for the sources present in that response.

## Response `200`

The data-source catalogue

- object
  - `data` SourceCredit[]
    - `attribution` string — The exact credit string this source's license requires you to display.
    - `disclaimer` string — A notice the source requires applications using its data to display. Present only for sources that impose one; it is not a credit and does not replace `attribution`. Where present, display it verbatim.
    - `license` string
    - `license_url` string, uri
    - `source_code` string — Jurisdiction or program code (e.g. `ESP`, `OSM`, `EIA`).
    - `source_name` string
    - `updated_at` string, date-time — The SOURCE's own last-update timestamp, when the upstream feed publishes one. Absent for most sources, which publish none. Several open licenses make this mandatory ALONGSIDE the credit string, not instead of it: Licence Ouverte 2.0 requires "la source ... et la date de la derniere mise a jour", and the Spanish RISP conditions require citing "la fecha de la ultima actualizacion de los documentos objeto de la reutilizacion". Where this field is present, display it with the attribution. Note this is the SOURCE's date, not ours. It is unrelated to a row's `last_updated`, which records when we observed the content change, and it may legitimately be older than the response.

---

[API](https://skmtc.net/road511/apis/road511-traffic-api.md) · [All operations](https://skmtc.net/road511/apis/road511-traffic-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/road511/road511-traffic-api/revisions/92944ef90bfd/schema)