Last updated Feb 27, 2023

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Runtime egress permissions

Having visibility and control over the external systems that your app communicates and shares data with helps maintain the security of your app and your app users.

Runtime egress permissions apply to all Function as a Service (FaaS) functions, including custom UI resolvers.

Define external domains in the manifest file

By default, if your Forge app is relying on a FaaS function that calls a third-party website (using axios or any library that relies on fetch middleware), your app invocation will fail.

To allow the calls to work, you must disclose these external domains by adding them as new entries in the permissions.external.fetch.backend section of the manifest.yml file of your app.

For example, to allow calls to the third-party website, use the following configuration:

        - '*'

Update the manifest file

You must define the new entries in the manifest.yml file before you deploy the app. See Permissions to know how to define these new entries in the external section.

Modifying these entries may result in a major version upgrade of your app. Your app users may again be required to agree to the permissions of your app.

Automatically update the manifest file

The CLI will automatically detect invalid configuration and the command forge lint --fix can be used to add the missing entries in your manifest.

14:30   error    The domain is not included in the external permissions of your app manifest  egress-permission-required

X 1 issue (1 error, 0 warnings)
  Run forge lint --fix to automatically fix 1 error and 0 warnings.

Manually update the manifest file

  1. Navigate to the top-level directory of your app and open the manifest.yml file.

  2. In the permissions section, add and remove external.fetch.backend entries as needed.

    For example, add the for the external fetch backend configuration.

            - ''
  3. In the index.js file of your Forge app, you can now leverage the new configuration:

    import api from '@forge/api';
    // your google analytics config
    const measurement_id = `G-XXXXXXXXXX`;
    const api_secret = `<secret_value>`;
    const sendAnalytics = async () => {
      return await api.fetch(
        `` +
        `/mp/collect?measurement_id=${measurement_id}` +
          body: JSON.stringify({
            // your analytics payload here
    sendAnalytics().then(() => console.log('success'));

    In this example, we're sending analytics events to Google API, via Forge fetch.

  4. Run the forge deploy command to reflect these changes in your app.

Validate entries via the forge lint command

You can use the forge lint command to help detect any invalid entries in the permissions of your app. For example, Atlassian supports a limited number of external URL formats. If an invalid URL format is detected in your app permissions, the linter highlights the invalid URL, and a recommendation to fix it, as shown in the example below:

38:11   error    Invalid 'external.fetch.backend' permission in   manifest.yml file - ''. Learn  about   permissions at:    valid-permissions-required

After fixing the URL, run forge deploy to deploy the changes. Note, if we detect major changes in your app, you may need to complete the Upgrade the app section below to deploy the changes.

Upgrade the app

A major version upgrade of your app may be needed for any of the following:

  • Changes in permissions
  • New egress controls
  • Updates to the targets of existing permissions

Changes to the app’s permissions won’t take effect until the app is upgraded. If you’ve previously deployed your app and a major change is detected, you’ll need to redeploy your app.

To upgrade your app:

  1. Navigate to your app's top-level directory.

  2. Start the upgrade by running:

    forge install --upgrade

    You’ll see output that’s similar to the following example:

    │ Environment   │ Site                         │ Product    │ Scopes      │
    │ ❯ development │    │ Jira       │ Latest      │
    │   development │    │ Confluence │ Latest      │
    │   production  │        │ Confluence │ Out-of-date │
  3. Select the Out-of-date installation to upgrade by using the arrow keys, and then press the enter key to upgrade the version of the app installed.

  4. Wait for the Upgrade successful message to appear.

Make sure to repeat these steps for each Out-of-date installation listed for the site that you're upgrading. After completing these steps, your app will now run with the implemented updates.

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