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Grok Build Src

xAI · Web

Grok Build Src d6a22a1aed70

eb267feff131→d6a22a1aed70·August 15, 2026 at 5:10 PM UTC

Grok Build OSS 1.0.4 — hooks and config overlays expand, selection/copy and follow-up behavior improve, and a large set of session, subagent, and composer fixes land.

Changelog

  • [new] StopCancelled hook event fires when a turn ends without completing (interrupt, permission reject, max turns, and similar paths).
  • [new] PreToolUse hooks can rewrite a tool’s input before it runs, not only allow or deny the call.
  • [new] Follow-up behavior setting lets queued messages send immediately as interjections instead of waiting for the turn to finish.
  • [new] Web search can be limited to allowed or excluded domains via [toolset.web_search] in config.toml.
  • [new] Session search index can be turned off with GROK_SESSION_SEARCH or [features] session_search for hosts that share $GROK_HOME.
  • [new] Tool commands and MCP servers receive GROK_SESSION_ID matching the current session.
  • [new] GROK_CONFIG / GROK_CONFIG_PATH config overlays inject a deep-merged settings layer (JSON inline or JSON/TOML file) above config.toml / managed config and below requirements.toml / MDM, with a fail-closed allowlist.
  • [new] Drag-to-select and copy on the /session-info tab; c and y shortcuts also work.
  • [new] Double-click selects a word by default; triple-click selects the whole paragraph.
  • [new] Recurring /loop tasks print a one-line expiry notice in the transcript when they auto-expire after 7 days.
  • [new] Relative markdown links can open existing files in the current working directory when no matching generated media is found.
  • [new] Optional app-side RTL/BiDi reordering for scrollback and related views via [scrollback.display] rtl_bidi in pager config (off by default).
  • [new] External OTLP telemetry supports private-CA trust and mTLS client identity (path-only cert/key via env or [telemetry]).
  • [fix] Queued messages no longer auto-submit while you are still editing them in the composer.
  • [fix] Sessions poisoned by rejected images are healed permanently so later turns succeed without retrying the bad image.
  • [fix] Auto permission mode honors explicit “always allow” grants and narrow allow rules from settings.
  • [fix] Subagent lifecycle events stay intact when delivered out of order, so all subagents show correctly in the UI.
  • [fix] Keystrokes typed while Grok is starting are kept in the composer instead of being dropped.
  • [fix] Background tasks killed from the UI wake the model when needed instead of staying parked after a single-task stop.
  • [fix] [stop] / Ctrl+C in a fullscreen subagent overlay cancels the visible child session; in a subagent drill-in it stops the focused subagent, not the root.
  • [fix] Hook failures show the first line of stderr, not only the exit code.
  • [fix] Pasting text or dragging images while scrollback is focused focuses the composer and pastes there.
  • [fix] Dashboard shortcut works with Ctrl+4 on terminals without the Kitty keyboard protocol.
  • [fix] Image-only screenshot pastes (e.g. Flameshot) work on Linux without a clipboard error.
  • [fix] Editing a queued prompt into a slash command (e.g. /btw) runs the command instead of sending the text to the model.
  • [fix] Text typed while a plan is generating is preserved when the approval screen appears.
  • [fix] grok du and worktree commands work on Windows when only USERPROFILE is set.
  • [fix] Permission-mode changes on the welcome screen apply to the newly created session.
  • [changed] Finished subagent transcripts are evicted from memory and rebuilt from disk when reopened (lower RAM use).
  • [changed] Cross-session memory is enabled via GROK_MEMORY=1, [memory] enabled = true, or managed remote settings; CLI --experimental-memory / --no-memory are no longer documented entry points.
  • [changed] Memory search/injection/dream/flush defaults are tighter (higher score floors, slower dream cadence, idle flush, MMR on by default; embedding model unset means FTS-only).
  • [removed] [todo] badge_format theming/config surface is dropped from the user guide.

Agent & tools

  • PreToolUse hooks: allow input rewrite before execution.
  • Web search toolset: domain allow/exclude lists in config.
  • MCP servers and tool commands: GROK_SESSION_ID in the environment.
  • StopCancelled hook for incomplete turns.
  • /loop auto-expiry notice after 7 days.
  • /memory, /flush, and related memory tools: require memory enabled through env/TOML/managed settings (no --experimental-memory flag in docs).
  • Follow-up / queued-message interjection behavior is configurable.

Docs

  • Configuration guide: full precedence stack including requirements.toml / MDM, GROK_CONFIG / GROK_CONFIG_PATH overlays, managed config, and allowlisted overlay keys.
  • Memory guide and shell README: enable/disable paths, priority order, and default tables updated; experimental CLI flags removed from the happy path.
  • Headless mode: process-level memory off via GROK_MEMORY=0.
  • Terminal support: Arabic/Persian RTL scrollback guidance and rtl_bidi setting.
  • Monitoring/usage: OTLP mTLS and certificate path options; per-signal protocol notes.
  • Plugins: clearer MCP server allowlist wildcard matching rules.
  • Theming: todo badge format section removed.
  • Tree links: xai-org/grok-build, sync commit d6a22a1aed70.

Under the hood

  • New xai-grok-home workspace crate and related home-path helpers.
  • Config layering split into explicit merge/overlay modules (config_layers, env_overlay).
  • Pager/render gains unicode-bidi support and RTL drag-copy PTY coverage.
  • Workspace scheduler liveness helpers; fsnotify codegen surface expanded.
  • Telemetry tests cover external OTLP mTLS over gRPC and HTTP.
  • Cargo package set bumps internal crates to 1.0.4 and refreshes several transitive deps (axum-server, image resize, bidi crates, and others).

Upgrade notes

  • Prefer GROK_MEMORY=1 / [memory] enabled = true (or managed remote settings) to turn memory on; use GROK_MEMORY=0 to force it off for the process. Drop reliance on --experimental-memory and --no-memory in scripts and docs.
  • Review [memory.*] if you depended on older defaults (min_score, dream intervals, embedding model, idle flush, MMR).
  • Harness/ACP launchers can inject soft settings with GROK_CONFIG or GROK_CONFIG_PATH instead of rewriting config.toml; overlays cannot bypass requirements.toml / MDM or security gates.
  • Optional: set [scrollback.display] rtl_bidi = true only if your terminal does not already reorder RTL text correctly.
  • Optional: configure OTLP CA/client cert paths for private collectors; do not put PEM material in TOML.
  • Remove any [todo] badge_format settings; they are no longer documented.
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