Show HN: Decision Guardian – Surface past architectural decisions on GitHub PRs
iamalizaidi Tuesday, February 10, 2026I built Decision Guardian after watching teams repeatedly debate decisions that were already settled.
At my last job, we chose Postgres over MongoDB for ACID compliance. 18 months later, a new engineer opened a PR to switch to MongoDB. The team spent 3 months re-evaluating before someone remembered.
Decision Guardian prevents this: - Document decisions in markdown (why you chose X over Y) - GitHub Action comments on PRs when decision-protected code changes - Free, open source, MIT licensed
Takes 2 minutes to set up. Would love feedback.
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decision-guardian.decispher.com