Free UI context files for Cursor: Examples & Best Practices for 2027

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By Lawrence Dauchy, Founder of VP0 Published October 3, 2026 Free UI context files for Cursor are project documents that describe how your interface should look, behave, and reuse existing code. A useful starting set includes a short project instruction file, a design specification, and a screen brief. For an iOS app, VP0 can supply free design source to help make those instructions concrete. The strongest setup combines written decisions with working components, so Cursor has examples to follow. For planning your 2027 workflow, start with the formats supported today and review them when your editor or project changes. What are UI context files for Cursor? UI context files capture the decisions an AI coding assistant needs before changing your interface. They explain the product, identify existing components, define visual conventions, and describe the states each screen must handle. Without that information, a request such as “build a clean settings page” leaves many decisions open. The assistant must choose the spacing, typography, navigation, form behavior, and component structure. The result may work while looking disconnected from the rest of your app. A useful context file replaces broad adjectives with specific instructions: Reuse the existing settings row component. Read colors from the theme. Keep destructive actions separate from routine preferences. Show a saving state after submission. Preserve the existing navigation structure. Follow the approved account screen for spacing. These instructions are especially useful when several screens share the same design language. Context files should record decisions that apply repeatedly. A temporary request belongs in the task prompt. A rule that should guide every future screen belongs in your project instructions or design specification. They also need maintenance. Once your components change, old examples can become misleading. Treat UI context as part of the codebase and review it alongside interface changes. Which files should you create first? Start with a short instruction file, one design document, and one screen brief. Add more files when a recurring problem needs its own guidance. Cursor’s current documentation describes AGENTS.md as a plain Markdown option for project instructions. Its structured project rules use .mdc files inside .cursor/rules , with metadata controlling when they apply. Ordinary Markdown files in that rules directory are not recognized as project rules. These formats are verified as of October 2026; check their current behavior when setting up a project in 2027. A practical arrangement is: AGENTS.md for project-wide instructions. docs/ui-context.md for the visual specification. docs/screens/settings.md for a particular screen. Existing source files for working component examples. The document names under docs are your own organizational choices. Creating a file named ui-context.md does not, by itself, guarantee that it will be read for every task. Explicitly ask the assistant to read relevant documents when beginning a screen implementation. Keep each file responsible for one thing Your project instructions should explain how to work in the repository. Your design document should explain how the interface is constructed. Your screen brief should explain what the current screen must accomplish. For a small prototype, these responsibilities can fit in one document. Split them when the file becomes difficult to scan or when different parts change independently. Avoid maintaining the same spacing rules in several places. One authoritative specification is easier to update. What should a free project instruction file contain? A project instruction file should identify the product, point to authoritative examples, and set boundaries for changes. It should be short enough that a developer can read it before starting work. The following example is intended for an existing React Native project. Replace the paths with files that actually exist in your repository. # Project instructions ## Product A personal habit tracker for iPhone. The main tasks are adding habits, recording progress, and reviewing recent activity. ## Before changing UI Read docs/ui-context.md and the relevant screen brief. Inspect existing components before creating new ones. Use src/screens/TodayScreen.tsx as the layout reference. ## Implementation Reuse components from src/components. Read colors and spacing from src/theme. Preserve existing navigation and data behavior. Do not add dependencies without explaining why they are needed. ## Scope Change only the requested screen and shared components required for that screen. Describe any broader change before implementing it. ## Verification Use the checks already configured in the repository. Review loading, empty, error, and success states. Report any check that could not be completed. The value comes from the references and boundaries. “Write excellent code” gives the assistant little direction. “Reuse components from src/components ” points to a concrete implementation. Do not copy this example unchanged if your project uses different folders or another framework. For a web application, reference its existing page, theme, and component structure. For a native SwiftUI app, identify the relevant views and styling conventions. Describe the project you have. Instructions for a different stack can cause unnecessary rewrites and incompatible suggestions. How do you write a useful UI design specification? A useful UI specification defines the interface through observable choices: tokens, components, layout, content, and interaction behavior. Begin with the decisions that appear across several screens. Then add examples for anything that text alone cannot describe clearly. Here is a free starter specification: # UI context ## Design direction A quiet, readable interface for daily habit tracking. Keep decoration restrained. Make the next action easy to identify. ## Theme Use the existing theme values for: - Background and surface colors - Primary and secondary text - Accent and destructive actions - Spacing, corner radius, and typography Do not introduce new values when an existing token fits. ## Layout Follow TodayScreen for horizontal spacing. Group related information together. Use one primary action per screen where appropriate. Allow text to wrap without overlapping controls. ## Components Reuse the existing Button, Card, SettingsRow, TextField, and EmptyState components. ## Content Use short, specific labels. Explain errors in plain language. Keep example data clearly separate from real user data. ## Interaction states Describe loading, empty, error, disabled, and successful states where they apply. ## Accessibility Keep text readable when enlarged. Give controls meaningful labels. Do not communicate status through color alone. The specification should refer to your actual theme whenever possible. Duplicating every color value in Markdown creates another document to keep synchronized. If the project has no theme yet, define a small set of tokens first. Choose a spacing scale, a few text styles, and semantic colors such as background, surface, primary text, and error. Then implement those choices in code. For an iOS prototype, VP0 can provide a free Expo React Native design starter with source files. Inspect the relevant screens, select the patterns that fit your product, and document the decisions you intend to keep. A reference becomes useful when the assistant knows which parts to follow. What does a good screen brief look like? A good screen brief explains the user’s task, the required content, and what happens before and after each action. It gives the assistant enough information to build a complete screen. Consider a settings page. “Add profile settings” leaves unanswered questions about editing, validation, saving, and failure. A more useful brief looks like this: # Account settings screen ## Goal Let the user update their display name and notification preference. ## Existing references Read docs/ui-context.md. Reuse the current TextField, SettingsRow, and Button. Follow the account summary screen for section spacing. ## Content - Page title: Account settings - Display name field - Notification preference - Save changes action ## Behavior Populate fields from the existing account data. Track whether the user has changed a value. Keep the save action disabled when nothing has changed. Preserve entered values if saving fails. ## States Loading: indicate that account details are loading. Saving: show progress and prevent duplicate submission. Success: confirm that changes were saved. Error: explain the failure and allow another attempt. ## Scope Use the existing account update method. Do not change authentication or navigation. ## Review Check long display names, enlarged text, keyboard behavior, and repeated save attempts. The brief connects visual work to behavior. A polished page still feels unfinished if its save button does nothing or if an error erases the user’s input. Add realistic content examples when they influence layout. A long name, an empty activity list, or several notification options can reveal problems that ideal sample data hides. Keep acceptance criteria observable. “Looks professional” is difficult to evaluate. “Long labels remain readable without covering the switch” gives the reviewer something concrete to check. How should you use context files in a Cursor task? Ask Cursor to inspect the relevant documents and existing code before implementing the screen. Then request a bounded change and review the result against the brief. A practical workflow has five steps. 1. Choose one screen and one task Begin with a screen that exercises your shared patterns, such as a dashboard, settings page, or activity list. Define the change precisely. “Implement the notification preference in account settings” is easier to review than “improve the whole app.” Keep a recoverable version of the project before s