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Cursor · Node.js + Express
Build a Todo API with Cursor
Prerequisites
- ✓ Cursor IDE installed
- ✓ Node.js installed
- ✓ Git installed
- ✓ Qmmit installed
- ✓ A Qmmit account with CLI token
1
Create the project
Set up a new Node.js project with Express.
mkdir todo-api cd todo-api npm init -y npm install express git init echo "node_modules/" > .gitignore git add . && git commit -m "initial: express project"
2
Set up Qmmit
Initialize Qmmit tracking.
qmmit init # Paste your CLI token
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What Qmmit does here
Detects Cursor in your installed tools. Installs 3 git hooks.
3
Open in Cursor and build the API
Open the project folder in Cursor. Use the chat or Agent mode to build the API.
# Open Cursor: cursor . # In Cursor chat, ask: # "Create an Express REST API with these endpoints: # GET /todos - list all todos # POST /todos - create a todo # PUT /todos/:id - update a todo # DELETE /todos/:id - delete a todo # Use an in-memory array for storage."
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Cursor Agent mode creates files directly. Qmmit detects this via workspaceStorage mapping — no file paths needed in the conversation.
4
Ask Cursor to add validation
Ask Cursor to add input validation to the API.
# In Cursor: # "Add input validation: title is required, must be a string, # max 200 characters. Return 400 with error message if invalid."
5
Ask Cursor to add error handling
One more prompt — add proper error handling.
# In Cursor: # "Add a global error handler middleware and 404 handler. # Return JSON error responses with status codes."
6
Test the API
Start the server and test with curl.
node index.js &
curl http://localhost:3000/todos
curl -X POST http://localhost:3000/todos -H "Content-Type: application/json" -d '{"title":"Buy milk"}'
curl http://localhost:3000/todos7
Commit
Commit everything. Qmmit captures all 3 Cursor prompts.
git add . git commit -m "feat: todo REST API with validation" # Expected: # [qmmit] 3 prompt(s) tracked (cursor) → def5678
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What Qmmit does here
Reads Cursor state.vscdb, finds 3 user prompts from this workspace, deduplicates, links to commit.
8
Push and verify
Push to GitHub and check your dashboard.
git remote add origin https://github.com/YOU/todo-api.git git push -u origin main # Check: qmmit.dev/yourusername # Should show: todo-api project, 3 prompts, cursor/auto model