OpenClaw v2026.5.2 landed late Friday night — and it's a meaty one. The stable release promotes what shipped across three beta builds this week: a significant plugin infrastructure rewrite, Grok 4.3 as the new default xAI model, a brand-new SDK tools.invoke API, and a wave of reliability fixes across Discord, Slack, Telegram, WhatsApp, and the Control UI. Over 200 contributors are credited.
Here's what's worth knowing.
Plugin Engine Gets a Ground-Up Rework
The biggest theme of 2026.5.2 is the plugin system. On the ClawHub side, install and update flows now carry ClawPack metadata all the way through diagnostics, onboarding, doctor repair, and channel setup. Versioned ClawPack artifacts are preferred when available, response headers and downloaded bytes are verified, and digest metadata is persisted on install records so future registry refreshes don't need to re-fetch what they already know.
For CLI users, openclaw plugins list --json now includes package dependency install state — handy for scripts that need to spot missing plugin dependencies without triggering a full runtime load. First-class git: plugin installs also land in this release, complete with ref checkout, commit metadata, and plugins update support for git-sourced plugins.
On the runtime side, the plugin registry is now reused across startup and request time instead of being rebuilt on every turn. That means providers, tools, channel actions, and memory helpers all resolve from the same loaded registry — reducing startup overhead on plugin-heavy installs. Plugin tool descriptors are also cached after api.registerTool() so repeated prompt-time planning skips the runtime load entirely.
Grok 4.3 Is Now the Default xAI Model
xAI's Grok 4.3 has been added to the bundled provider catalog and promoted to the default chat model for the xAI provider. If you have providers.xai configured, you'll get Grok 4.3 on the next run without any config changes.
SDK Gets a tools.invoke RPC
Developers building on top of the Gateway SDK now have a tools.invoke RPC endpoint. It ships with shared HTTP policy, typed approval and refusal results, and SDK helper support. This is the foundation for external systems invoking agent tools programmatically — a capability that's been requested for a while.
Thread Bindings Simplified
The dual-toggle approach for subagent and ACP thread spawns is gone. It's been replaced by a single threadBindings.spawnSessions flag, defaulting to on. If you're upgrading from an older config, openclaw doctor --fix will migrate the legacy keys automatically. (#75943)
Channel Fixes Across the Board
Discord: Multi-step interactions — buttons, selects, and forms — now survive Gateway restarts until they naturally expire. Message-channel access groups land as well, letting allowlists reference a shared accessGroup: key across channel auth paths. (#75813)
Slack: The App Home tab now renders a safe default view on app_home_opened instead of erroring. Bot-participated threads are tracked across restarts so auto-reply in threaded conversations continues after a Gateway upgrade. (Fixes #11655)
WhatsApp: Explicit @newsletter outbound targets are now supported for WhatsApp Channel/Newsletter sends — previously these would fall through to DM routing. (Fixes #13417)
OpenAI-compatible TTS: An extraBody/extra_body passthrough lands for TTS endpoints, so custom speech servers can now receive additional fields like lang in /audio/speech requests. (Fixes #39900)
Performance Wins Throughout
The release notes call out targeted optimizations across gateway startup, session listing, task maintenance, prompt prep, and large runtime config handling. A fast-path for POSIX path containment checks avoids repeated path.resolve and path.relative calls in hot filesystem walkers — a fix contributed by @Enderfga that touches a few long-standing issues (#75895, #75575).
macOS Menu Bar Cleanup
The macOS companion app gets a small UX tightening: recent session context rows are moved into a Context submenu while usage and cost details stay root-level. The result is a cleaner menu bar on installs with many active sessions. Thanks @Guti.
How to Upgrade
npm install -g openclaw@latest
openclaw doctor --fix
The --fix flag handles the thread binding migration automatically. Full release notes are on GitHub.