Audit Logging Protocol

1. Principles

• No Invisible Actions: Every state-changing API call (POST, PUT, DELETE) must produce a log entry.
• Traceability: Logs must include userId, action, resourceId, and metadata.

2. Implementation Standards

• Backend (API):

- Use the project's standard Logger service (e.g., src/services/logger.ts or similar). - Example: ``typescript await Logger.info({ event: 'POST_CREATED', userId: user.id, metadata: { postId: newPost.id } }); ``

• Database (Supabase):

- Ensure tables have createdat, updatedat, and createdby columns. - Check if specific Audit Table inserts are required (e.g. auditlogs table).

3. Verification Checklist

• Does the new API endpoint call Logger?
• Are logs visible in Supabase/Dashboards?
• Is the log level appropriate (Info vs Error)?
• Does the log contain enough context to debug issues later?