I'm Ryota Murakami who lives in Tokyo. Currently working as a freelance React/Node/TypeScript developer. Here is my independent OSS organization.
Claude Code v2.1.152 quietly added `disallowed-tools` to Skill frontmatter. My first reaction was to file it as a 4th Skills lever for trimming initial context — that turned out to be wrong, but the thing it actually does is more interesting: it spends Claude's reasoning budget more carefully by shrinking the tool selection space.
What Claude Code actually loads into context at startup once Tool Search defers MCP and built-in tool definitions on demand — why the live window is far smaller than the raw totals imply, and why Skills (not MCP) is now the biggest line you can cut, plus the plugin and MCP-instruction levers that trim the rest.
A practical fix for TS1434 and other false TypeScript errors in MDX files by using a local tsconfig, the MDX TypeScript plugin, and remark-frontmatter.
Daily OSS activity digest — React, TanStack, Next.js ecosystem
Walking-skeleton refresh — replacing the GitHub feed with author-written context.
Small TypeScript libraries and tooling under the laststance org.