Local JSON schema diff CLI + MCP client for API/MCP drift — offline compare_json, hosted monitoring connector for Pro/Team.
README
Catch API and schema changes before your integrations break.
Start hosted trial (no credit card): driftguard.org/start — full Pro on one endpoint, ~2 minutes.
10-min MCP drift lab: Dev.to tutorial · ToolSchema Kit
DriftGuard compares JSON contracts locally (free CLI and MCP client) and runs scheduled checks with alerts when you need always-on API contract monitoring and contract observability on hosted Pro/Team.
Use schema drift CI (compare_json, GitHub Actions) before merge; use hosted watches when you need MCP tool catalog drift detection in production.
Not full self-host: this repo is the client layer (diff + MCP connector). The monitoring pipeline is a managed service — see OPEN_CORE.md.
Many projects share the name DriftGuard. This repo (kioie/driftguard) is API and MCP schema drift monitoring — canonical product: driftguard.org.
driftguard — UI linter (sjamcox), not schema drift.driftguard-mcp — conversation-drift MCP (jschoemaker), not contract monitoring.driftguard; different vendor and scope.driftguard repos (GitOps, Python ML, etc.); verify `