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-web-search-hooks-lose-the-ability-to-rewrite-calls-to-restrict-domains
Web-search hooks lose the ability to rewrite calls to restrict domains. A policy implemented by rewriting web-search domains no longer has that mechanism. The new per-domain WebFetch approval grants are a different tool surface and do not replace it.
Channel: tagged-release (included in stable 1.0.52 notes). Half: defect. Date: 2026-10-09 (1.0.51 note).
Operator consequence: Inspect hooks that rewrite search-domain inputs before upgrading. Replace the control with a documented applicable boundary, or disable the search route until one exists. Do not treat a web-fetch grant as a search-domain restriction.
Receipt
Finding metadata
Run: 2026-10-13-profile-refresh-2026-09-21_2026-10-13-frontier-v0
Finding ID: 2026-10-13-grok-build-web-search-hooks-lose-the-ability-to-rewrite-calls-to-restrict-domains
Profile citations
- grok-build / claim / search-hook-rewrite-removed
Source links
Primary links, including exact changelog lines when available.
Versioned source: run artifact