Add check-availability

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (e716c6d) to head (8e7d654).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #35 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 14 14 Lines 83 83 Branches 9 9 ========================================= Hits 83 83 ```

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