A new free Claude skill called Ponytail just reached 58,000 GitHub stars and 2,900 forks in one week. It reportedly cuts generated code by 54%, lowers cost by 20%, and boosts speed by 27% when integrated into Claude Code.

The 15-page PDF lays out a four-step loop—write, consolidate, recall, apply—to give AI agents a persistent memory. Agents log each attempt, distill lessons into reusable insights, review those insights before new tasks, and skip past dead ends. Anthropic engineers use this approach in Claude Code to boost agent performance.

Anthropic released a BLE protocol and ESP32 firmware that turns an M5StickC Plus into a desk companion for Claude, showing real-time animations and token stats. You can flash the device in minutes, pair over Bluetooth, and use its physical buttons to approve or deny Claude’s permission prompts without touching your computer.

This article breaks down three unadvertised breaking changes in Anthropic’s Opus 4.7 release—budget_tokens now errors, the tokenizer uses 35% more tokens, and thinking tokens are hidden but still billed. It also highlights a sharp drop in long-context performance and user reports of increased hallucinations, and recommends updating code to use “effort”: “xhigh” and reviewing the migration guide.