3 workflows
Newsletter Digest Builder
v1.0.1runcastle
Reads a links.md list of URLs, fetches each one inside the sandbox, and has a Claude Code agent write a ready-to-send newsletter digest — a tight 2–3 sentence summary of every link, why it matters to your readers, and the source link, all assembled into a single markdown issue.
SEO On-Page Audit
v1.0.1runcastle
Fetches a single target page and audits its on-page SEO — title, meta, headings, canonical, Open Graph, structured data, alt text, internal links, word count — then writes a prioritized, fix-by-fix action list you can hand to a developer.
Release Notes Writer
v1.0.1runcastle
A single Claude Code agent reads the commits since your last tag, groups them into Added/Changed/Fixed/Security by user-facing intent, and writes a clean CHANGELOG.md entry plus a friendly RELEASE_NOTES.md — turning raw git history into release-ready notes in one pass.