# The test data the sandbox accepts, in one place: /testdata.md and /testdata.json

- Date: 2026-11-01
- Type: New
- Surface: Developer portal and CLI
- What you need to do: Nothing.
- Address: https://developers.rivr.io/changelog/2026-11-01-testdata-catalog

`/testdata.md` and `/testdata.json` list the test data the sandbox accepts: the Swedish personal numbers on Skatteverket's list of test personal numbers and Avarda's two test persons, each with its source, the rule for synthetic Norwegian numbers, the PTS phone series for fictional use, the email domain `example.com`, the card rules, and the rule that a sandbox clinic refuses any other personal number with `422` and `personal_number_not_test_identity`. `/testdata.md` takes `?lang=sv|en`; `/testdata.json` has both languages. Both are public, need no sign-in, and are listed in /llms.txt and in the MCP server's `get_page`. The guide Test in the sandbox now reads its personal numbers from the same catalogue, and a check in Rivr's build fails when the portal publishes a Swedish personal number that is not in it.