Summary of "It Took Me 847 Hours in Cursor to Learn These 15 Hacks"

Overview

This is a hands‑on tutorial summarizing 15 practical Cursor (AI coding IDE) hacks to speed development and unlock hidden features. Each hack includes what it does and how to enable or use it.

Hacks — quick list with key steps

Show subscription usage
- Settings → Chat → Usage summary: set to Always to see included usage, monthly spend limit, and billing reset.
Fast mode & model switching
- Use Shift+Up to toggle modes (Ask, Agent, Plan, Background tasks).
- Press Cmd// to open the model menu, then type/select a model (e.g., “gpt5”) to switch quickly.
Early access features
- Settings → Beta → Early access: enable to get new Cursor features earlier.
- Note: nightly builds exist but can be buggy; use with caution.
Use different models for plan vs build
- Create a plan with a strong planner model (e.g., GPT‑5 High) and then switch to a faster/cheaper model (e.g., Claude 4.5) for the actual build/execution.
Open multiple project windows
- File → New Window to work on two projects/repositories side‑by‑side (useful for separate landing page + app projects).
System theme auto‑detection
- Settings → General → Editor settings → Workbench appearance: pick preferred dark/light themes and enable “window autodetect color scheme” to match your OS.
Split terminals
- Terminal → New Terminal, then use the split terminal button to run multiple terminal panes simultaneously.
Slash commands & auto‑generate rules
- Type / to see commands (for example, Generate Cursor Rules).
- You can feed a docs/blog URL and a fast model (Cheetah) to auto‑create a Cursor rule file (example: Tailwind v4 rule file).
Apply rules selectively
- In an agent chat, press Add → Rules to attach specific rule files to a chat/message (useful for applying rules only when relevant, not globally).
Index external docs into Cursor - Settings → Index & Docs → Add doc: paste a docs URL (e.g., Convex docs). Cursor will fetch and index pages so the agent can query full documentation inside the workspace.
(Dangerous) Give Cursor access to local env secrets - Create a file named cursor.ignore and negate default ignores (for example, !.env.local) to allow Cursor to read env files. - Strong warning: do this only in safe/test environments.
Message modes: Send, Queue (Q), Stop+Send - Send: steer the streaming agent without stopping it (good for quick corrections). - Queue (Q): enqueue messages as a to‑do list to be consumed after the current task finishes. - Stop+Send: stops current work then sends a message (can be confusing; use carefully).
Custom modes (beta) - Settings → Chat → Custom modes: create specialized agents/modes with controlled permissions (MCP servers, web search, specific system prompts). - Examples: architect, database analyst, Supabase specialist.
Attach previous chats & show commits (repo history) - Use the @ (add) command to attach prior chat summaries. - @ show commits: enable to give Cursor access to the repository’s commit history and PRs so the agent can reason about past changes and propose reverts/changes.
Duplicate a primed chat (clone context) - In a well‑primed chat, use the three‑dot menu → Duplicate chat to clone the current chat state (context + docs + rules) and branch off multiple tasks from the same starting context.

Notable technologies and models referenced

Cursor (AI coding IDE)
Models: GPT‑5 High, Claude 4.5, Cheetah (fast model)
Tools/services: Convex (database), Tailwind (CSS v4), Bunx (example command)
Cursor features: settings panels, plans, agent/chat modes, rules system, docs indexer, custom modes, terminal splits, chat duplication, repo commit access

Practical tips and warnings

Enable Usage summary and Early Access for more visibility and features.
Use a strong planner model plus a faster executor model to balance quality and speed.
Index docs and generate rule files to reduce agent mistakes (for example, generate a Tailwind v4 rule file).
Never expose production secrets. The cursor.ignore trick is powerful but risky — only perform it in isolated/test environments.
Prefer Send or Queue modes over Stop+Send for smoother agent steering.

Warning: Allowing Cursor to read local environment or secret files can expose sensitive data. Only use that capability in controlled, non‑production environments.

Type of content

This is a tutorial/walkthrough showing settings, workflows, and advanced hidden features — useful as a how‑to guide to get more from a Cursor subscription.