Share and install AI agent workflows built on Sandcastle
Runcastle is a registry of Sandcastle workflows — planner/reviewer pipelines, parallel implementers, issue loops. Inspect every prompt, hook, and Dockerfile before you install. Files are copied into your repo; you own them. Nothing executes at install time.
npx runcastle add castellan-demo/parallel-reviewFeatured
Browse all →Trending
Browse all →Simple Task Loop
v1.0.0castellan-demo
A single Claude Code agent that works through a TASKS.md checklist one item at a time, committing each change, until every task is done. The minimal Sandcastle teaching example.
Parallel Planner with Adversarial Review
v1.0.0castellan-demo
Plans parallelizable GitHub issues, implements each on its own branch in parallel, then runs an adversarial Codex review with a per-branch fix loop before merging.
Claude Implement, Codex Review
v1.0.0castellan-demo
A mixed-provider pipeline: a Claude Code agent implements a task, then a Codex reviewer critiques and fixes it on the same warm branch, looping until it approves.
Newest
Browse all →Simple Task Loop
v1.0.0castellan-demo
A single Claude Code agent that works through a TASKS.md checklist one item at a time, committing each change, until every task is done. The minimal Sandcastle teaching example.
Parallel Planner with Adversarial Review
v1.0.0castellan-demo
Plans parallelizable GitHub issues, implements each on its own branch in parallel, then runs an adversarial Codex review with a per-branch fix loop before merging.
Claude Implement, Codex Review
v1.0.0castellan-demo
A mixed-provider pipeline: a Claude Code agent implements a task, then a Codex reviewer critiques and fixes it on the same warm branch, looping until it approves.