Jern's differentiator is traceable validation. It says it never merges changes itself, and advertises a 30-day trial with $5 of inference before a $19-per-workspace plan using the developer's own API keys. These are vendor claims, so verify them before authorizing repository access.
Action: connect one low-risk test repo and assign a small dependency upgrade. Compare the generated receipt with the actual test output and the same job in Cursor.
