◉CLAUDE LABJP
●2.1.301 — Adds the vim % motion, LaTeX math rendering in the VS Code panel, and a retry-watchdog limit for usage-limit waits (10/15)●2.1.299 — Conversations over 200K tokens left idle about 54 minutes get compacted; MCP allow rules now match only the server they name●SONNET 4.5 — Retires on the Claude API on 11/30, 45 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST MODE — Opus 5.5 fast mode is out of research preview and no longer needs the beta header (10/15)●NEW — I Put a Ten-Line Promise File at the To…●2.1.301 — Adds the vim % motion, LaTeX math rendering in the VS Code panel, and a retry-watchdog limit for usage-limit waits (10/15)●2.1.299 — Conversations over 200K tokens left idle about 54 minutes get compacted; MCP allow rules now match only the server they name●SONNET 4.5 — Retires on the Claude API on 11/30, 45 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST MODE — Opus 5.5 fast mode is out of research preview and no longer needs the beta header (10/15)●NEW — I Put a Ten-Line Promise File at the To…
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Vertex AI

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deprecation1migration1MCP1Claude API1Production1Enterprise1Prompt Caching1
⬡ API & SDK/2026-09-21Intermediate

The morning a deprecation notice appeared, I checked versions before editing config

Claude Desktop and Cowork stop accepting older managed-configuration spellings on October 7. Here is how I sorted mine into what to fix now, what to fix after upgrading, and what changes meaning on its own.

⬡ API & SDK/2026-06-23Advanced

When the Same Model Has a Different Name Everywhere — Designing a Cross-Provider Model Identity Resolver for Claude

Now that Fable 5 is available on the API, Bedrock, and Vertex at once, the same model carries a different identifier on each. Here is how to untangle hardcoded model strings with a small resolver that maps logical names to physical IDs, carries capability flags, and verifies identifiers at startup.

⬡ API & SDK/2026-04-07Advanced

Vertex AI × Claude Enterprise Integration Guide: Prompt Caching, Multimodal, and Agent Design

A practical guide to enterprise-grade Claude integrations on Google Cloud Vertex AI. Covers prompt caching, BigQuery logging, multimodal processing, agent design, RAG, and production-ready patterns.