◉CLAUDE LABJP
●FORK — Claude Code 2.1.212 changes what /fork does: it copies your conversation into a new background session with its own row in claude agents, so you can keep working. The old in-session subagent is now /subtask●LIMITS — WebSearch calls are now capped at 200 per session by default, and subagent spawns get the same 200 ceiling, so a runaway search or delegation loop stops on its own●MCPBG — MCP tool calls running past two minutes now move to the background automatically, keeping the session usable. Tune the threshold with CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS●PLANFIX — Fixed plan mode auto-running file-modifying Bash commands such as touch and rm without a permission prompt or an SDK canUseTool callback●SONNET5 — Claude Sonnet 5 is running on introductory pricing of $2 per million input tokens and $10 per million output. After August 31 it moves to $3 and $15●IPO — Bankers are reportedly lining up investor meetings for Anthropic ahead of a possible public listing as soon as October●FORK — Claude Code 2.1.212 changes what /fork does: it copies your conversation into a new background session with its own row in claude agents, so you can keep working. The old in-session subagent is now /subtask●LIMITS — WebSearch calls are now capped at 200 per session by default, and subagent spawns get the same 200 ceiling, so a runaway search or delegation loop stops on its own●MCPBG — MCP tool calls running past two minutes now move to the background automatically, keeping the session usable. Tune the threshold with CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS●PLANFIX — Fixed plan mode auto-running file-modifying Bash commands such as touch and rm without a permission prompt or an SDK canUseTool callback●SONNET5 — Claude Sonnet 5 is running on introductory pricing of $2 per million input tokens and $10 per million output. After August 31 it moves to $3 and $15●IPO — Bankers are reportedly lining up investor meetings for Anthropic ahead of a possible public listing as soon as October
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⬡ 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/2026-06-12Intermediate

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 for four apps into the Claude API Code Execution tool — Files API integration, container reuse, the 5-minute billing minimum, and the file-preload charge that surprises almost everyone.

⬡ 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.