OpenClaw 2026.3.31 adds durable tasks and remote MCP over HTTP/SSE

• OpenClaw's 2026.3.31 preview centers on a new durable task layer: the project says it now has "real background task flows" with list, show, and cancel controls, while the beta notes describe a unified SQLite-backed control plane for subagents, cron jobs, and recovery release preview beta notes.
• The same preview adds remote MCP over HTTP/SSE, extending OpenClaw beyond local tool wiring and toward longer-running remote integrations feature thread.
• Messaging coverage broadened in Asia-heavy channels: the release preview says OpenClaw now bundles a QQ bot for private, group, and guild chat plus media, and LINE can now send images, video, and audio release preview.
• The update also leans hard on hardening: OpenClaw highlighted "security and reliability improvements" across recent releases, and a maintainer credited full-time engineering support for that work beta notes hardening post.

The biggest implementation change is task orchestration. OpenClaw's release preview calls out "real background task flows," and the beta release notes expand that into a single SQLite-backed ledger for ACP tasks, subagents, and cron-style work, with lifecycle control, cleanup, and recovery. A practitioner summary from steipete's post describes it as "a new task system for more reliable subagents/crons/etc," which is the clearest practical read on why this shipped.

The same thread adds remote MCP over HTTP/SSE, alongside native Slack exec approvals, Matrix draft streaming with room history, Android notification forwarding controls, WhatsApp emoji reactions, and Teams member info via Graph feature thread. On the channel side, OpenClaw says QQ support is now bundled rather than separate, with private, group, and guild chat plus media, while LINE gains richer outbound media support and the release improves CJK context, memory, and TTS release preview. Separately, OpenClaw's hardening post says the last few releases focused on "careful security and reliability improvements," matching the beta note details on stricter plugin-install checks, tighter auth defaults, and fewer trusted surfaces for node-originated events beta notes.