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Cursor Agent Mode can inspect a project, edit files, and run terminal commands to carry out a coding task. Cursor describes Agent as combining instructions, tools, and a selected model; its public documentation does not reveal the private prompt or orchestration logic behind those actions. A useful way to understand the workflow is as a sequence of request, inspection, tool use, and review—not as a guaranteed internal call sequence.
Node.js 22 is a separate, practical example: it can run certain TypeScript files by stripping erasable type syntax, but it does not type-check them or provide the full TypeScript compiler pipeline.
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What Cursor Agent Mode does
Cursor’s documentation describes Agent as an assistant that can complete coding tasks, run terminal commands, and edit code. The documented components are instructions, tools, and a selected model. Instructions shape how the task is approached; tools let the agent interact with the project; and the model determines how it interprets the request and available results.
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How the documented workflow fits together
The following is a reader-friendly synthesis of the capabilities Cursor documents. A small question may need few or no tool calls; a larger change may involve several rounds of inspection, edits, and commands.
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Give the agent a goal
Describe the outcome you want in natural language. Project instructions and configured rules can shape the agent’s approach. Be specific about relevant constraints, expected behavior, and files or areas that should not change when those details matter.
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Inspect the project
The agent can use search and file-reading tools to gather context. It may look for related code, configuration, or tests, but the exact files it chooses depend on the request. Inspection is a capability, not a guarantee that it will read every relevant file before acting.
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Use tools to act on the request
Depending on the task, the agent can edit files, search again, or run terminal commands. A command can provide information—such as a test result—that informs a later action. This interaction is often described as a tool-use loop, but it should not be mistaken for a disclosed or universal internal schedule.
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Review changes and command effects
Agent can make changes across multiple files and run commands. Inspect the resulting diff and understand what commands did before accepting the work. Cursor’s security documentation notes that workspace changes may be written immediately; version control gives you a practical way to review and recover changes.
Agent, Ask, and Custom modes are different workflows
These modes describe the kind of interaction and tool access you want. They are distinct from the controls that govern whether commands need approval or how they execute.
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| Mode | Documented role | Useful when |
|---|---|---|
| Agent | Autonomous exploration and task execution, including code edits and tool use. | You want the agent to investigate and implement a change, potentially across files. |
| Ask | Read-only exploration. | You want explanations or codebase investigation without asking the mode to make edits. |
| Custom | A user-configured workflow with selected tools and instructions. | You want to tailor available tools or behavior for a particular workflow. |
Cursor’s interface and available controls can change. Check the settings and mode descriptions in your installed version rather than assuming labels or defaults are permanent.
Approval and execution controls govern a separate risk
Run Modes address how tool calls—especially terminal commands—are approved and executed. Cursor documents Auto-review, Allowlist, and Run Everything, but the names alone should not be treated as a security guarantee. In particular, Cursor warns that Auto-review is not a security boundary because its classifier can make mistakes.
| Run Mode | What to understand | Practical consideration |
|---|---|---|
| Auto-review | An automated classifier is involved in reviewing calls; Cursor says it can make mistakes. | Do not rely on it as a security boundary. Review commands and effects yourself. |
| Allowlist | Execution is governed by an allowlist. | Review what is allowed and whether those permissions are appropriate for the project. |
| Run Everything | Calls are run under the selected mode without the same per-call approval expectation. | Understand the potential effects before enabling it, and inspect workspace changes. |
The local terminal may also run in a sandboxed, restricted environment that can block unauthorized file access or network activity. Sandboxing reduces some risks; it does not eliminate them, and environments can differ. Cloud or background agents have separate environment characteristics and are outside this local-workflow explanation. Check the current controls for the environment you are actually using.
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Can Node.js 22 run TypeScript without a build step?
Yes, for TypeScript syntax that can be erased without generating JavaScript. Node.js removes that type syntax at runtime; it does not check whether types are correct. In the Node.js v22.21.0 documentation, type stripping is recorded as added in v22.6.0. It was enabled by default starting in v22.18.0, when it also stopped emitting an experimental warning. These details are specific to the documented Node.js 22 releases.
For example, with a nearby package.json containing {"type":"module"}, these files use erasable types and an explicit type-only import:
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import type { User } from './user.ts';
export function greet(user: User): string {
return `Hello, ${user.name}`;
}
// user.ts
export type User = { name: string };
On a Node.js 22 release with the documented built-in support enabled, run the entry file with node greet.ts. This is an illustrative example, not a claim that it has been executed here. Running it does not type-check the program; use a separate type checker if type correctness matters.
What native type stripping does—and does not—support
Plain type stripping removes erasable type syntax by replacing it with whitespace, preserving source positions. It is runtime convenience, not a replacement for tsc or a complete compilation workflow.
- No type checking: Node runs the JavaScript that remains after stripping; it does not report ordinary TypeScript type errors.
- Some syntax requires transformation: Constructs that need JavaScript generation, such as enums, namespaces, legacy module syntax, and parameter properties, are not handled by plain stripping. The Node.js v22 CLI documents
--experimental-transform-typesfor the transform-types path; it implies stripping and source maps. - No tsconfig-driven compiler behavior: Node does not use
tsconfig.jsonto apply compiler transformations or resolvepathsaliases. - No TSX: The built-in TypeScript support does not support
.tsxfiles. - Explicit type imports matter: Mark imports used only as types with the
typekeyword. Otherwise, Node treats them as value imports, which may fail at runtime if the imported value is unavailable.
Module rules and file extensions still apply
Type stripping does not remove Node’s module-system rules. In a .ts file, the module system is determined as it is for a .js file. For ESM, set the nearest package’s "type": "module" or use .mts. For CommonJS, use CommonJS forms such as require and module.exports, or use .cts. Node does not convert between ESM and CommonJS for you.
Relative TypeScript imports need their file extension, as in import type { User } from './user.ts';. The Node.js v22.21.0 documentation recommends TypeScript 5.8 or later and these compiler settings for compatible checking and editor behavior:
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"compilerOptions": {
"target": "esnext",
"module": "nodenext",
"rewriteRelativeImportExtensions": true,
"erasableSyntaxOnly": true,
"verbatimModuleSyntax": true
}
}
noEmit is optional when the goal is only to execute .ts files directly. The settings do not make Node perform type checking; they help align TypeScript tooling with the runtime’s supported syntax and module behavior.
How the Node.js example relates to Cursor
Node.js native type stripping is one possible local runtime path for a project an agent might inspect or edit. It is not evidence that Cursor depends on Node’s type-stripping feature. Cursor’s documented Agent capabilities concern instructions, tools, and a selected model; the Node.js feature concerns executing supported TypeScript syntax. Keeping those roles separate helps avoid attributing a project’s runtime behavior to the coding assistant.
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