feat: add Grok as first-class harness#138
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📝 WalkthroughWalkthroughThis PR adds support for a new agent harness ChangesGrok Harness Support
Estimated code review effort🎯 2 (Simple) | ⏱️ ~12 minutes Poem
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Actionable comments posted: 1
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⚠️ Outside diff range comments (1)
src/main/burn-spawn-hook.ts (1)
84-92:⚠️ Potential issue | 🟠 Major | 🏗️ Heavy liftGrok is inferred but still coerced to Claude in burn stamping paths.
Line 91 adds
'grok'as an inferred harness, but Grok currently falls through to the unknown-launcher fallback that writes pending stamps asharness: 'claude'. That creates harness misattribution in burn data. The same coercion pattern also exists insrc/main/broker.tschild-lineage stamping logic, so both paths should be aligned in the same change.🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@src/main/burn-spawn-hook.ts` around lines 84 - 92, The inferHarness function currently recognizes 'grok' but downstream burn-stamp writing still coerces unknown launchers to 'claude', causing misattribution; update the burn-stamping path so it uses the actual inferHarness result (or explicitly maps 'grok' to 'grok') instead of forcing 'claude', and make the same change in the child-lineage stamping logic in src/main/broker.ts so both use the same harness value (ensure you reference inferHarness and the burn-stamp/write-pending-stamp code paths in broker.ts and replace the hardcoded 'claude' fallback with the inferred harness or explicit 'grok' mapping).
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@src/renderer/src/components/proactive/ProactiveAgentEditor.tsx`:
- Around line 90-95: The MODEL_OPTIONS constant in ProactiveAgentEditor.tsx
contains Grok entries that don't match xAI docs; either confirm these internal
aliases are supported or update the grok array to use the documented model IDs
(e.g., replace 'grok-build' with 'grok-build-0.1' and replace
'grok-composer-2.5-fast' with the documented composer ID such as
'grok-composer-0.1' or the correct public identifier); ensure the change is
applied to the MODEL_OPTIONS constant so downstream selection code uses valid
xAI model IDs or documented internal aliases.
---
Outside diff comments:
In `@src/main/burn-spawn-hook.ts`:
- Around line 84-92: The inferHarness function currently recognizes 'grok' but
downstream burn-stamp writing still coerces unknown launchers to 'claude',
causing misattribution; update the burn-stamping path so it uses the actual
inferHarness result (or explicitly maps 'grok' to 'grok') instead of forcing
'claude', and make the same change in the child-lineage stamping logic in
src/main/broker.ts so both use the same harness value (ensure you reference
inferHarness and the burn-stamp/write-pending-stamp code paths in broker.ts and
replace the hardcoded 'claude' fallback with the inferred harness or explicit
'grok' mapping).
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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📒 Files selected for processing (14)
src/main/broker.tssrc/main/burn-spawn-hook.tssrc/main/proactive-agent.bundle.tssrc/main/proactive-agent.tssrc/main/proactive-agent.types.tssrc/renderer/src/components/agents/CloudAgentPicker.tsxsrc/renderer/src/components/common/AgentIcons.tsxsrc/renderer/src/components/common/AgentToolbar.tsxsrc/renderer/src/components/proactive/ProactiveAgentCard.tsxsrc/renderer/src/components/proactive/ProactiveAgentEditor.tsxsrc/renderer/src/components/sidebar/SpawnAgentDialog.tsxsrc/renderer/src/components/terminal/TerminalPane.tsxsrc/renderer/src/lib/spawn-agent.tssrc/shared/types/ipc.ts
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✅ pr-reviewer applied fixes — committed and pushed Reviewed and fixed one PR issue: Validation run:
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Updated the Grok model defaults to documented xAI model IDs:
I validated the burn-stamping review comment against the current checkout and did not change it: Verification passed locally:
Remote status data available through the connector only shows Sources used for model validation: xAI docs for Grok Build 0.1 and Models. |
Wires Grok (xAI) across all harness enumeration points so it has the same unified UI experience as Claude and Codex: type definitions, burn stamping, proactive agent types and editor, cloud agent picker, spawn dialogs, toolbar, icons, and empty-state quick-spawn buttons. Note: Grok is PTY-based — no structured output mode is available yet. Structured rendering (equivalent to Claude stream-json / Codex app-server) is deferred pending xAI shipping a JSON output interface. https://claude.ai/code/session_01KXU1uAUwx3L82TMLnAmU4z
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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2 participants
What this PR does
GrokIconSVG added toAgentIcons.tsx(xAI X-shape mark)grok-build,grok-composer-2.5-fastWhy Grok is PTY-only (intentional)
Grok runs the
grokCLI in a pseudo-terminal — the same as Codex before its app-server. This is intentional: xAI has not shipped a structured output mode equivalent to Claude's--output-format stream-jsonor Codex's app-server event stream.Grok headless support is tracked in issue #141. Once relay confirms compatibility with Grok's
--output-format streaming-json, Grok can be added to the headless list in #139/#140 and structured rendering can follow the same pattern as Claude/Codex.How this differs from #139/#140
PRs #139 and #140 move Claude, Codex, and OpenCode off PTY onto relay's headless transport (no PTY process created). Grok stays PTY here because there is no structured output alternative available from xAI yet.
Deferred
y/n?prompts and render as Pear dialog cardsGenerated by Claude Code