---
title: Access Durable Object name via `ctx.id.name`
description: Retrieve the name of a named Durable Object from within the object itself.
image: https://developers.cloudflare.com/changelog-preview.png
---

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## Access Durable Object name via \`ctx.id.name\`

Mar 15, 2026 

[ Durable Objects ](https://developers.cloudflare.com/durable-objects/)[ Workers ](https://developers.cloudflare.com/workers/) 

When your Worker accesses a Durable Object via `idFromName()` or `getByName()`, the same name is now available on `ctx.id.name` inside the object — no need to pass it through method arguments or persist it in storage. This brings the runtime behavior in line with the [Workers runtime types](https://developers.cloudflare.com/workers/languages/typescript/).

This is especially useful for [alarms](https://developers.cloudflare.com/durable-objects/api/alarms/), where there is no calling client to pass the name as an argument. When an alarm handler runs, `ctx.id.name` will hold the same name the object was originally accessed with.

**JavaScript**

```js
import { DurableObject } from "cloudflare:workers";


export class ChatRoom extends DurableObject {
  async getRoomName() {
    // ctx.id.name returns the name passed to getByName() or idFromName()
    return this.ctx.id.name;
  }
}


// Worker
export default {
  async fetch(request, env) {
    const stub = env.CHAT_ROOM.getByName("general");
    const roomName = await stub.getRoomName();
    return new Response(`Welcome to ${roomName}!`);
  },
};
```

`ctx.id.name` is `undefined` in the following cases:

* For Durable Objects created with `newUniqueId()`.
* When accessed via `idFromString()`, even if the ID was originally created from a name.
* For [names longer than 1,024 bytes](https://developers.cloudflare.com/durable-objects/api/id/#name).

This works the same way in local development with `wrangler dev` as it does in production. Run `npm update wrangler` to ensure you are on a version with this support.

For more information, refer to the [Durable Object ID documentation](https://developers.cloudflare.com/durable-objects/api/id/#name).

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