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LynxHub uses API versioning to ensure compatibility between the host application and installed plugins (modules and extensions).

Current API versions

For the LynxHub client version 3.5.0, the active API versions are:

Compatibility model

Every plugin must specify its required API version inside its metadata.json configuration file:
When loading plugins at startup, LynxHub performs the following compatibility checks:
  1. Exact match or minor version updates: The host loads the plugin if its requested API version is equal to or lower than the host’s supported version (within the same major version).
  2. Major version mismatch: If the plugin requires a higher major API version than the host supports, the host disables the plugin and notifies the user with a compatibility warning.
  3. Missing version fields: If the plugin configuration does not specify an API version, it defaults to legacy compatibility mode and may run with limited API features.

Configuring semver ranges

When publishing a plugin, you must declare compatible API ranges in your plugin’s versioning.json registry file under the engines field. The host application checks this range to ensure compatibility.

Easy semver guide

Use these simple formats to control which host versions can run your plugin:
  • Caret ^ (Recommended): Matches the major version. Allows safe updates.
    • Example: "^2.0.0" works with 2.0.0, 2.1.0, and all 2.x.x versions. It will not work with 3.0.0.
  • Tilde ~ (Strict): Matches the major and minor version. Only allows patch fixes.
    • Example: "~2.1.0" works with 2.1.0 and 2.1.1. It will not work with 2.2.0.
  • Exact version (Strict): Requires the exact version number.
    • Example: "2.1.0" only works with 2.1.0.

Example configuration

Here is an example versioning.json snippet showcasing how to specify compatibility for a module and an extension:

For a module:

For an extension:


API changelogs

The following changelogs detail API additions, modifications, and deprecations for the 3.5.0 release.

Version 3.5.0

This major release introduced the V3 UI redesign, a unified IPC system, and major API version bumps.

Modules (API 2.1.0)

  • Bumped moduleApiVersion to 2.1.0.
  • Added the supportCustomArguments configuration flag to let modules explicitly enable or disable custom argument UI rendering.
  • Integrated Alert UI feedback support across most module execution steps.

Extensions (API 2.0.0)

  • Bumped extensionApiVersion to 2.0.0.
  • Enabled extensions to dynamically inject positional cards directly into the Tools and Games pages.
  • Enabled extensions to dynamically intercept and listen to any IPC event (running callbacks before and after calls) across both main and renderer processes.
  • Replaced the legacy IPC implementation with a unified IPC handler system, passed to both main and renderer entrypoints.
  • Added API support to trigger modals directly from card dropdown menus.
Last modified on June 21, 2026