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TestPerch 0.0.1 — Experiment & flag testing for Amplitude

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@skvortsov-dev skvortsov-dev released this 18 Sep 17:07
· 12 commits to main since this release
v0.0.1
c6b395d

TestPerch is an independent Chrome extension for managing your own Amplitude experiment and feature flag testing assignments.

Available now

  • Automatically connect to an existing, signed-in Amplitude Experiment tab.
  • Select a project and see your own manual Testing assignments.
  • Find existing experiments and feature flags by name or key.
  • Add yourself to an available test variant, including custom variants.
  • Switch your test variant or leave Testing to restore normal targeting.
  • Refresh assignments every 30 seconds while the popup is visible; edits pause refresh.
  • Use light, dark, or system appearance with keyboard-accessible menus.
  • Disconnect with the exit icon; automatic reconnection stays paused until you reconnect.
  • Try the interface with fictional data without changing an Amplitude account.

Install and update

Download testperch-v0.0.1.zip, extract it to a permanent folder, then choose Load unpacked in chrome://extensions with Developer mode enabled. Choose the extracted testperch folder containing manifest.json.

Subscribe through Watch → Custom → Releases. Future releases include versioned ZIPs. Update the files in the same installation folder and click Reload. Unpacked extensions do not update automatically.

Scope and limits

  • Archived configurations are excluded.
  • Matches the current Amplitude account's exact email in individual Testing assignments; does not match device IDs or cohorts.
  • Requires existing permission to edit the selected configuration. Other participants and rollout settings are preserved.
  • Leaving Testing does not exclude you from a 100% rollout.
  • Disconnecting TestPerch does not sign out of Amplitude or remove saved assignments.
  • Keep the popup open while saving. Conflicts are surfaced without automatic retries; writes are checked with a fresh read.
  • Uses internal Amplitude session endpoints. Not affiliated with or endorsed by Amplitude; compatibility can change. Chrome Web Store publication is on hold while integration and legal questions are clarified.
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