Claude Fable 5.1 Migration: Two Changes Can Break Agent Workflows
Claude Fable 5.1 rejects forced tool choice and its thinking blocks cannot be read by older Claude models. Test tool, transcript, refusal, retention, and cost paths before migrating.
Tagged collection
Latest articles tagged “Site Migrations”
Open an article for the complete method, evidence, limitations, and a focused reader discussion.
-
-
Gemini Imagen Shutdown: Migrate Image Tools Before August 17
Google is shutting three Imagen 4 API model IDs on August 17, 2026. Migrate production image workflows to Gemini image generation with a measured cutover and rollback.
-
Crawled — Currently Not Indexed After a URL-Prefix Migration: A Diagnostic Matrix
A URL-prefix removal can expose redirect, canonical, sitemap, internal-link, and content-equivalence failures. Diagnose the migration before blaming an update.
-
Gemini API Key Migration: Build a 30-Field Cutover Register
Migrate Gemini API Standard keys with a 30-field register, a current September cutover decision, production-path testing, telemetry and rollback.
-
Google-GeminiNotebook Replaced Google-NotebookLM: Update Log Parsers Without Losing History
Google renamed the NotebookLM crawler token. Update exact-match rules and analytics without splitting one crawler into two histories.
-
How to Migrate AI-Browser Research Without Losing Evidence
Migrate AI-browser research as a claim-source evidence package, keep cookies and history separate, test replacement capabilities and require a second-person cold restart.
-
Google Site Moves: Domain-Variant Migration Matrix
Control a domain migration across www, non-www, HTTP, HTTPS and subdomains with a downloadable mapping, launch, verification and rollback matrix.
