Cursor Errors and Fixes

Cursor Not Understanding My Codebase

Generic answers that don't match your code

Cursor Changing Files I Didn't Ask It To

Modified 10 files when you asked about 1

Cursor Says Context Limit Reached

'Context window is getting long' warning

Cursor Generating Pages Router Instead of App Router

Creates pages/ instead of app/ files

Cursor Agent Mode Stopping Mid-Task

Agent stops partway through

Cursor Autocomplete Is Slow

Tab completions appear after you've typed past them

Cursor Generating Wrong Import Paths

Import paths don't resolve

Cursor Breaking Working Code When Adding Features

Working feature broke after adding a new one

Cursor MCP Server Not Connecting

MCP tools not appearing in Cursor

Cursor Using APIs That Don't Exist

Generated code calls functions that don't exist

Cursor Supabase RLS Blocking Inserts

Form submits in Cursor but no row appears in Supabase

Cursor Supabase Auth Session Missing After Refresh

User signs in successfully, then gets logged out on refresh

Cursor Supabase Storage Upload Failing

File picker works but the upload fails

Cursor Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

Cursor Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

Cursor Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page

Cursor Clerk Middleware Redirect Loop

The app keeps bouncing between login and dashboard

Cursor Clerk Production Domain Not Authorized

Authentication works locally but not on the live domain

Cursor Clerk Session Missing After Refresh

The user appears signed out after a refresh

Cursor Resend API Key Missing in Production

Emails work locally but not after deploy

Cursor Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

Cursor Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam