generated: '2026-07-22'
method: searched
source: https://www.euronext.com/sites/www.euronext.com/files/euronext-saturn-web_services_specifications_2.8.8.pdf
scope: Euronext Saturn Reporting API
note: |
  The Euronext Web Services market data API publishes no sandbox - the URL and
  token issued at onboarding are production credentials. Saturn is the only
  Euronext API with a documented test environment.
test_environment:
  name: EUA (External User Acceptance)
  base_url: https://saturn-api-h.euronext.com/
  production_url: https://saturn-api-p.euronext.com/
  separation: Separate hostname; same /SaturnWebServices/rest/ resource paths
    and the same credential model (logon token + client certificate).
  note: Client testing is organised around EUA periods ahead of production
    releases; the specification states example values are for testing
    throughout the EUA period.
fixtures:
- name: Example APA/ARM upload file
  url: https://www.euronext.com/sites/www.euronext.com/files/saturn_example_of_apa-arm_upload_file.csv
  description: Published sample CSV for the Saturn file-upload submission path.
- name: Example OBOE upload file
  url: https://www.euronext.com/sites/www.euronext.com/files/saturn_example_of_oboe_upload_file.csv
  description: Published sample CSV for Off Book On Exchange trade reporting.
- name: Client certificate package
  url: https://www.euronext.com/sites/www.euronext.com/files/saturn_certifdigicertclient.pfx
  description: DigiCert client certificate distributed for mutual-TLS setup,
    with the DigiCert certificate utility (digicertutil.zip) linked from the
    specification.
tooling:
  note: The specification recommends testing the REST API with Postman or curl
    (or the Saturn UI); it includes worked curl examples against
    saturn-api-h.euronext.com, including a shortcode/longcode file upload to
    /SaturnWebServices/rest/files/upload.