What's new in clawrium v26.7.0
The v26.7.0 release brings Slack MCP integration across all three GA agent types (hermes, openclaw, zeroclaw), completes workspace overlay sync on macOS for the full agent matrix, adds macOS support for clawctl agent shell, resolves the openclaw canonical-render gap, tightens sync validation and health-checking, and bumps all upstream agent pins to their latest versions.
What changed
Slack MCP integration for hermes, openclaw, and zeroclaw
Slack MCP support is now available for all three GA agent types. The slack-user (xoxp bearer) and slack-cookie (xoxc+xoxd) integration types attach a SHA256-pinned korotovsky/slack-mcp-server subprocess so agents can list channels, read messages, and post via MCP tool calls. Hermes support landed in Phase 1, openclaw in Phase 2, and zeroclaw in Phase 3. Each agent type has its own dedicated sync-time-runbook for binary installation (following the new "Integration Binary Install" architectural pattern), and a CLI attach-time gate rejects unsupported (agent-type, integration-type) pairs before they can corrupt hosts.json. The Slack MCP toolset name is now pinned to slack across all surfaces — tools show as slack_* regardless of the integration name in the registry.
Workspace overlay sync now GA on macOS for all agent types
Workspace overlay sync — the feature that mirrors operator-dropped files from ~/.config/clawrium/agents/<type>/<name>/workspace/ to the agent host on every sync — is now fully functional on macOS for openclaw (Phase 4), zeroclaw (Phase 5), and hermes (Phase 6). Each agent type has its own workspace_macos.yaml playbook with OS-aware home-root resolution and per-type exclude lists. The complete hermes exclude list (config.yaml, .env, auth.json, state.db + WAL files, sessions/, logs/, skills/clawrium/) is enforced identically on darwin via the shared workspace_excluded Jinja filter.
clawctl agent shell now works on macOS hosts
The clawctl agent shell <name> -- <cmd> command now supports macOS hosts. A new shell_macos.yaml playbook is selected per-OS via the playbook resolver. The kill window uses Homebrew's gtimeout (coreutils) when available, with the ansible-runner outer timeout as backstop. On darwin, ~/.bash_profile is sourced first to match the macOS login-shell convention.
Openclaw canonical renderer consolidation
The openclaw openclaw.json file is now written through a single canonical Python renderer on every code path — install, configure, and sync. The legacy Jinja template (openclaw.json.j2) has been deleted. This also fixes the litellm provider prefix bug: clawctl agent configure now correctly emits <provider-name>/<model> instead of the bare model id, which previously caused FailoverError: Unknown model errors.
Stricter sync validation and health verification
Several sync-time guards now protect operators from half-baked state. clawctl agent sync validates agent_name at the CLI boundary (rejecting path traversal, uppercase, shell metacharacters, etc.) before opening any SSH connection. A new install-presence probe detects missing on-host service-manager artifacts before render — so sync fails fast with a concrete recovery hint instead of writing half-rendered config. Linux sync now probes the gateway TCP port after systemctl is-active (matching the macOS nc -z path), so synced (drift=0) is no longer printed when the gateway port is not accepting connections. Stopped agents whose install is gone are reclassified as INSTALL_MISSING with a red status pill and reinstall hint.
Upstream pin bumps across all agent types
Hermes bumped from 2026.5.29.2 to 2026.7.1, openclaw from 2026.6.9 to 2026.6.11, and zeroclaw from 0.7.5 to 0.8.2. New platform entries cover Ubuntu 22.04/24.04 (x86_64), macOS ≥14 (arm64), and for zeroclaw also armv7l Debian 13 and aarch64 Ubuntu. clawctl agent create installs the latest pin; existing instances can opt in via clawctl agent upgrade.
CLI and GUI refinements
The clawctl mcp placeholder command group has been removed entirely — Slack-backed MCP is now a first-class integration type. The GUI Integrations page renders official vendor SVG brand icons (github, gitlab, atlassian, linear, notion, brave, git) instead of two-letter type badges. The /create-vhs skill gains tape.output_format: gif support for screen-recording demos. Hermes config now renders model.context_length for litellm providers when context_window is set, and the new --context-window N flag on clawctl provider registry create|edit persists this value.
Why
Slack was the highest-requested third-party integration. Splitting it across three phases (hermes → openclaw → zeroclaw) let us validate the sync-time binary-install pattern on each agent type before expanding, and the attach-time gate prevents the same integration-class regression from happening again with future integration types.
Workspace overlay on macOS was the last missing piece of the cross-platform story. Operators running clawrium on Mac Minis could sync agents on Linux hosts for months — darwin support was a gap that made the feature incomplete.
The openclaw renderer consolidation eliminated a three-month class of bugs where the legacy Jinja template diverged from the canonical renderer — litellm prefixing, gateway.auth shape, and version probing were all symptoms of having two renderers doing the same job.
Try it
Upgrade to v26.7.0:
uv tool install clawrium@26.7.0
Breaking change note: if you have openclaw agents with config.provider.default_model starting with bedrock/, you must update the prefix to amazon-bedrock/ in hosts.json before the next sync. See the changelog for details.
Links
Drafted by clawrium-gtm (agent) running on qwen3.6-27b via Hermes Agent.