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You can use Cursor to plan and implement a feature without handing it unchecked control: keep the request bounded, review the proposed approach, inspect the diff as changes are made, and use Git as your durable recovery point. Cursor applies Agent edits to files as it works, so the diff is a way to review and reject changes—not a promise that nothing is written until you approve it.

1. Define the feature and its boundaries

Give Cursor the behavior you want, the relevant constraints, and what should stay out of scope. For example, specify the screen or workflow affected, expected behavior, existing conventions to follow, and whether the task should avoid changing APIs or unrelated files. Cursor’s troubleshooting guidance recommends specific prompts and targeted context; use @ to attach key files or folders when that context matters.

A prompt narrows the task, but it is guidance—not a technical access boundary. If a file must not be changed, say so clearly and still check the resulting diff. For actual access and execution controls, review Cursor’s separate security settings.

2. Choose whether to plan first

Use Plan Mode for complex or uncertain work

For a multi-file feature, unclear requirements, or an architectural choice, begin in Plan Mode. Cursor says it researches the codebase, asks clarifying questions, and creates a plan you can review and edit before you start the build. Read the plan for scope, affected files, assumptions, and missing edge cases; revise it before implementation if needed. See Cursor’s Plan Mode documentation.

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Go directly to Agent for a small, familiar change

For a quick change with an obvious implementation, starting directly in Agent can be reasonable. Agent can edit multiple files and run shell commands, so even a small request warrants checking what it changes. The distinction is practical: Plan Mode makes the proposed approach reviewable first; Agent performs coding work.

3. Add repeatable project guidance

When a feature must follow conventions that apply across tasks, record them as Project Rules in .cursor/rules. Rules can document patterns, constraints, and preferred commands; they can be scoped to paths or invoked manually, and they can be version-controlled with the project. Cursor’s Rules documentation explains the available rule types and scope.

Treat rules as context for the agent, not enforcement. They do not guarantee that every edit will comply. Use permission and access controls—not rule wording—when a constraint needs to be a security boundary.

4. Review the diff while the work is happening

Cursor’s review interface shows additions and deletions and lets you accept or reject changes at file level or selectively. Since Agent edits are applied and saved to disk as it works, inspect the diff during and after implementation rather than assuming there will be a single approval gate at the end. Cursor describes these controls in its change review documentation.

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For each changed file, check:

  • Does the implementation match the agreed plan and requested behavior?
  • Did unrelated files or behavior change?
  • Are error cases, boundary conditions, and existing project conventions handled?
  • Do additions and deletions make sense together, rather than merely compiling in isolation?

Reject changes that are out of scope or incorrect; keep only the edits you understand and want. A clean-looking diff is not proof of correctness, so follow review with the project’s own checks.

5. Keep command execution and reload behavior visible

Cursor’s Agent Security documentation says terminal commands require approval by default, and warns that auto-reload can execute Agent changes before you review them. Check your Run Mode and auto-reload configuration instead of assuming all effects wait until after diff review. Read a proposed command before approving it, especially if it installs dependencies, changes data, or runs a server or script.

6. Know which recovery tool covers what

Use diff controls to decide what to keep

The diff is for examining edits and selectively accepting or rejecting them while shaping the feature. It is not the same as restoring a previous state.

Use a checkpoint to restore Agent changes

Cursor checkpoints are local snapshots of Agent changes. Restoring one returns Agent-modified files to the saved checkpoint state, but checkpoints do not capture manual edits. Cursor’s checkpoint documentation states: “Checkpoints are not version control. Use Git for permanent history.”

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Use Git for durable history and broader recovery

Commit a known-good starting point before a substantial feature, then review the working tree and commit only the changes you intend to keep. Git provides durable project history and covers changes beyond Agent’s own edits; a checkpoint is a temporary, local recovery aid. Cursor’s security guidance says: “Always use version control so you can revert changes.”

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7. Verify the finished feature

Run the relevant tests, type checks, linting, and build commands used by the project. Inspect failures rather than asking Cursor to make them disappear without explanation; determine whether a failure is caused by the feature, an existing issue, or a changed assumption. Finally, compare the behavior and touched files with the original request and plan. Cursor can run checks, but generated code still needs your review and the project’s own verification.

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