---
title: "Create Signature for Bucket"
url: https://docs.catalyst.zoho.com/en/api/code-reference/cloud-scale/stratus/create-sign-bucket/
description: "This API enables you to create a signature for the bucket."
last_updated: 2026-08-28T06:26:16Z
service: Cloud Scale
type: api
---

# Create Signature for Bucket

### Description

This API allows you to create a signature for the required bucket. The Bucket is referred by its [unique bucket name](https://docs.catalyst.zoho.com/en/cloud-scale/help/stratus/buckets/name-bucket/#ideal-practices-to-name-a-bucket).

### Request Details

#### Request URL

`POST` {api-domain}/baas/v1/project/{project_id}/bucket/signature

- **project_id** (Numerical): The [unique ID](https://docs.catalyst.zoho.com/en/getting-started/set-up-a-catalyst-project/general-settings/) of the project

#### Query Parameters

- **bucket_name** (Alphanumeric, mandatory): The [name of the bucket](https://docs.catalyst.zoho.com/en/cloud-scale/help/stratus/buckets/name-bucket/#ideal-practices-to-name-a-bucket)

#### Request Headers
 **Authorization:** Zoho-oauthtoken {oauth_token} 

**Optional Headers** 

 **CATALYST-ORG:** {org_id}

 **Environment:** Development

#### Scope

ZohoCatalyst.buckets.objects.CREATE

### Response Details

On successful execution, the response will contain the required signature of the bucket along with its validity time period.

**Sample Request**

```bash

curl -X POST 
https://api.catalyst.zoho.com/baas/v1/project/4000000006007/bucket/signature?bucket_name=zylker-bucket\
-H "Authorization: Zoho-oauthtoken 1000.910*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*16.2f*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*57"

```

**Sample Response**

```json

    {
    "status": "success",
    "data": {
        "signature": "stsPolicy=eyJzaWduaW5ndGltZSI6MTcyMTk3NDc1NDQ1MiwiZXhwaXJhdGlvbiI6MzYwMCwiYWN0aW9uIjpbIkdldE9iamVjdCIsIlB1dE9iamVjdCJdLCJjcmVkZW50aWFscyI6IjY3MjUxNjQ0LTg1NDM1OTI2IiwicmVzb3VyY2UiOlsic3JuOjo6dGVzdGRzZHMtZGV2ZWxvcG1lbnQvKiJdLCJxdWVyeSI6W10sImhlYWRlcnMiOltdLCJib2R5Ijp7ImNvbnRlbnQtdHlwZSI6IioiLCJjb250ZW50LWxlbmd0aCI6bnVsbH19&stsSignature=Nyr29x7N-CzDSfFaTzzPnwWsL74ga9rIGZJIxWFdNtI",
        "expiry_time": 1786382487000
    }
    }

```

### SDK Documentation

* [Generate Presigned URL - Java SDK](https://docs.catalyst.zoho.com/en/sdk/java/v1/cloud-scale/stratus/pre-signed-urls/)
* [Generate Presigned URL - Node.js SDK](https://docs.catalyst.zoho.com/en/sdk/nodejs/v2/cloud-scale/stratus/pre-signed-urls/)
* [Generate Presigned URL - Python SDK](https://docs.catalyst.zoho.com/en/sdk/python/v1/cloud-scale/stratus/pre-signed-urls/)
* [Stratus - Web SDK](https://docs.catalyst.zoho.com/en/sdk/web/v4/cloud-scale/stratus/overview/)
* [Stratus - iOS SDK](https://docs.catalyst.zoho.com/en/sdk/ios/v2/cloud-scale/stratus/overview/)
* [Stratus - Android SDK](https://docs.catalyst.zoho.com/en/sdk/android/v2/cloud-scale/stratus/overview/)
* [Stratus - Flutter SDK](https://docs.catalyst.zoho.com/en/sdk/flutter/v2/cloud-scale/stratus/overview/)