◉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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⬡ API & SDK/2026-06-12Intermediate

Handing Monthly Revenue CSVs to the Claude API Code Execution Tool — Files API Wiring, Container Reuse, and Billing Traps

How I moved monthly revenue-CSV reconciliation into the Claude API Code Execution tool — a pre-upload sanity check, Files API integration, container reuse, the 5-minute billing minimum, and the file recovery that pause_turn quietly drops.

⬡ API & SDK/2026-06-21Advanced

Surviving the 90-Second Code Execution Cell Limit with Checkpointed Chunking

Claude's code execution tool now enforces a 90-second per-cell limit. Here is how to keep a long batch from getting cut off there: persist progress to the container filesystem and resume across cells, with working code for timing, idempotent checkpoints, and knowing when to offload.

⬡ API & SDK/2026-03-30Advanced

Building a Search-Augmented AI Assistant with Claude API: Web Search × Dynamic Filtering × Citations

Learn how to combine Claude API's Web Search Tool, Dynamic Filtering, and Citations API to build a production-grade search-augmented AI assistant that returns accurate, source-backed answers.