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Storage API

In 2024, Forge hosted storage will automatically include data residency. This means that all app data in Forge hosted storage will inherit data residency, in all current and future Atlassian-supported regions.

This implementation will provide your customers with greater control over their app data’s location. For more information, read this announcement.

Custom entity store

The Storage API lets you store data in custom entities, which are data structures you can define according to your app's needs. Custom entities let you assign multiple values (or "attributes") to a single key (or "entity") and define indexes to optimize queries against these values.

To start, import the Forge API package in your app, as follows:

import { storage } from '@forge/api';

Each installation of your app is subject to the Storage API's quotas and limits. See Storage quotas and Storage limits for more details.

The app storage API requires your app to have the storage:app scope. See Add scopes to call an Atlassian REST API guide to add new scopes to your app.

For a detailed tutorial on storing and querying structured data through custom entities, see Use custom entities to store structured data.

This page lists different methods for managing data stored in custom entities. For related information:

  • See Custom entities for more detailed information about declaring them in your manifest file.
  • See Complex query and building complex queries for them.

For a detailed tutorial on storing and querying structured data through custom entities, see Use custom entities to store structured data.


Stored entity values must adhere to the following type requirements:

integerMust be a 32-bit signed integer, with the following value limits:
  • Minimum value: -2,147,483,648
  • Maximum value: 2,147,483,647 (inclusive)
floatThe value must either be 0, or fall within the following range limits (both inclusive):
  • Positive range: 1E-130 to 9.9999999999999999999999999999999999999E+125
  • Negative range: -9.9999999999999999999999999999999999999E+125 to -1E-130

We provide 38 digits of precision as a base-10 digit.

  • Must be a free-form, URT8 character sequence
  • Must contain at least one non-whitespace character
  • Must not be empty
booleanCan only be true or false

The any type supports the following values:

  • string
  • integer
  • float
  • boolean
  • object
  • array

The Custom entity store strictly enforces attribute types. Attempting to store a value whos type doesn't match its field will result in an error (for example, when you try to set a string value to an attribute with an integer type).


Stores a JSON value with a specified key, for the selected entity.

Method signature

storage.entity(entityName: string).set(key: string, value: object): Promise<void>;


A key should:

  • match the regex /^(?!\s+$)[a-zA-Z0-9:._\s-#]+$/
  • contain at least 1 character
  • contain a maximum of 100 characters
  • not be empty
  • not contain only blank space(s)


Sets the key example-key for an entity named employee.

storage.entity("employee").set('example-key', {
    age: 30,
    employmentyear: 2022,
    gender: "male",
    nationality: "Australian"


Gets a custom entity value by key. If the key doesn't exist, the API returns undefined.

Method signature

storage.entity(entityName: string).get(key: string): Promise<object>;


Gets the value associated with the key example-key.

// Read the value for key `example-key`
await storage.entity("employee").get('example-key');


Deletes a value by key, for the selected entity. This succeeds whether the key exists or not.

While you can use the storage.entity.delete method to delete app data when deleting an app, we recommend you raise a ticket with the Atlassian Marketplace team to handle this for you. See Retiring your app for more details.

Method signature

storage.entity(entityName: string).delete(key: string): Promise<void>;


Deletes the value associated with the key example-key, if it hasn't already been deleted.

// Delete the value with the key `key`
await storage.entity('employee').delete('example-key');


Allows you to build complex queries against data in your Custom entity store. See Complex query for detailed information.

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