●PRICING — Anthropic has cancelled the September 1 increase for Claude Sonnet 5. The $2 input and $10 output per million tokens is now simply the standard price, so any forecast built on $3 and $15 needs redoing●VERSION — v2.1.241, released August 23, is a fixes-and-reliability release. MCP v2 no longer reopens subscriptions/listen endlessly against servers that close long-held streams on a fixed timeout●LINUX — Idle sessions on Linux with sandboxing enabled no longer pin a CPU core at 100 percent●SKILLS — Bundled skill aliases such as /checkup and /review no longer report Unknown command in -p mode or with plugins and MCP loaded when a same-named user or project skill shadows them●ARGS — Skill and command argument substitution no longer re-expands argument values as template markers●WATERMARK — Claude products released from August 2 onward embed machine-readable marking in generated output. It answers EU AI Act transparency rules, but it is applied worldwide rather than only in Europe●PRICING — Anthropic has cancelled the September 1 increase for Claude Sonnet 5. The $2 input and $10 output per million tokens is now simply the standard price, so any forecast built on $3 and $15 needs redoing●VERSION — v2.1.241, released August 23, is a fixes-and-reliability release. MCP v2 no longer reopens subscriptions/listen endlessly against servers that close long-held streams on a fixed timeout●LINUX — Idle sessions on Linux with sandboxing enabled no longer pin a CPU core at 100 percent●SKILLS — Bundled skill aliases such as /checkup and /review no longer report Unknown command in -p mode or with plugins and MCP loaded when a same-named user or project skill shadows them●ARGS — Skill and command argument substitution no longer re-expands argument values as template markers●WATERMARK — Claude products released from August 2 onward embed machine-readable marking in generated output. It answers EU AI Act transparency rules, but it is applied worldwide rather than only in Europe

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Claude Code² skill design¹ integrity checks¹ operations¹ Skill Design¹ Unattended Automation¹ Preflight¹

⟐ Claude Code/2026-08-24Advanced

The same skill lived in two places, and only one copy still had its files

Two scopes held skills with identical names. The SKILL.md files matched down to the sha256, yet one copy was missing the files its own body points to. Here is how I scanned 66 skills and rewrote the detector three times to get from four hits to two real ones.

⟐ Claude Code/2026-08-06Advanced

The Skill Call That Returned Nothing — Pinning Down Name Resolution Before an Unattended Run

A skill whose name collides with a built-in terminal command may never resolve in a non-interactive session. Here is a preflight that builds the effective-name table before launch, plus the measured run where the checker itself silently skipped two entries.