3 workflows

runcastle

An Opus planner triages your open `bug`-labelled GitHub issues into independent fixes, then a swarm of Sonnet fixers fans out — one per issue, each on its own branch — to reproduce, root-cause, patch, and test the bug in parallel.

runcastle

A single Claude Code agent reads your offer and ideal-customer notes and writes a complete 5-touch cold email sequence — subject-line options, tight bodies, send timing, one clear CTA per email, and personalization tokens ready to merge at send time.

runcastle

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.