# forge.version

- [FORGE_API_LATEST](/reference/forge/version/FORGE_API_LATEST.md):
- [ForgeApiError](/reference/forge/version/ForgeApiError.md): A script's ``FORGE_API`` line is missing, malformed or unsupported.
- [SUPPORTED_API_LEVELS](/reference/forge/version/SUPPORTED_API_LEVELS.md):
- [check_api_level](/reference/forge/version/check_api_level.md): Return the declared level if Forge supports it, else raise ``ForgeApiError``.