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Evidence record / grok-build

A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.

2026-10-13-grok-build-plan-mode-refuses-mcp-resource-downloads-and-headless-runs-honor-no-subagents

Plan mode refuses MCP resource downloads and headless runs honor no-subagents. Planning and unattended sessions gain documented limits that previously did not hold on these paths: plan mode rejects MCP resource downloads, and headless no-subagents is honored.

Channel: tagged-release (included in stable 1.0.52 notes). Half: defect. Date: 2026-10-09 (1.0.51 note).

Operator consequence: Re-test CI commands using --no-subagents and plans that fetch resources on 1.0.52. Move needed downloads to an explicitly authorized execution step. Treat these as specific corrected routes rather than a certification of every plan-mode action.

Receipt

Finding metadata

Confidence
high

Run: 2026-10-13-profile-refresh-2026-09-21_2026-10-13-frontier-v0

Finding ID: 2026-10-13-grok-build-plan-mode-refuses-mcp-resource-downloads-and-headless-runs-honor-no-subagents

Profile citations

Source links

Primary links, including exact changelog lines when available.

  1. Grok Build
    official docs2026-10-13-grok-build-plan-mode-refuses-mcp-resource-downloads-and-headless-runs-honor-no-subagentsstorage.googleapis.com/grok-build-public-artifacts/cli/changelogs/1.0.51.external.mdofficial docs2026-10-13-grok-build-plan-mode-refuses-mcp-resource-downloads-and-headless-runs-honor-no-subagentsstorage.googleapis.com/grok-build-public-artifacts/cli/changelogs/1.0.52.external.md

Versioned source: run artifact