2026-08-18 · NextClaw v0.39.0

Published: 2026-08-18 Tags: release npm minor

NextClaw v0.39.0 completes the cross-platform publishing path for native Apps. Developers can provide one or more platform builds for a single App version, while users download only the artifact that matches their device. The Marketplace now shows operating-system support before installation.

Features

• Publish multiple platform builds under one App version: A version can target one platform or provide macOS, Linux, and Windows builds without splitting into separate Apps.
• Download only the compatible artifact: NextClaw detects the operating system, architecture, and Linux ABI, selects an exact match, and verifies its integrity after download.
• See platform support in the Marketplace: App cards and detail pages show supported operating systems, while universal Apps remain available on every platform.

Enhancements

• Developers can create platform artifacts with nextclaw app pack --target, then submit the complete target set through the unified validation and publishing commands.
• When the newest release does not support the current device, installation selects the newest compatible version. An explicitly selected incompatible version fails before download.
• NextClaw's hashed UI assets now use long-lived caching, reducing repeated asset transfers during later visits and launches.

Fixes

• The universal thinking-off option remains selected across different model capability declarations instead of being replaced by an active reasoning level.
• OpenAI Responses requests now receive function tools in the expected schema.
• Idle NCP streams open sooner, reducing initial interaction latency.

Defaults and compatibility

• Existing universal Apps require no changes and remain installable on every platform.
• Native artifacts must match the manifest's declared target set exactly. Missing, extra, or duplicate artifacts are rejected before publishing.
• Linux builds distinguish GNU and musl instead of matching on CPU architecture alone.

Learn more: NextClaw Apps · App Marketplace