pre-release
Skill8.9k starsChanged 13 days agoMITView on GitHub
Run a series of pre-release checks on the repo.
6 other projects use a version of this.
Adopted by
Steady: 0 new projects took it in the last 4 weeks, none the 4 weeks before.thin data
Most recently taken up by
- nrflo/nrflotheir own version, first seen Oct 29, 2026
- ZhuoZhuoCrayon/throttled-pytheir own version, first seen Oct 8, 2026
- Cosmian/kmstheir own version, first seen Oct 8, 2026
- paiml/aprendertheir own version, first seen Oct 8, 2026
- rusq/slackdumptheir own version, first seen Jun 12, 2026
- marcfargas/skillstheir own version, first seen Feb 15, 2026
Who's talking about mattpocock/sandcastle
- mattpocock/skills“Skill idea: implement-with-worktree — parallel sessions without stepping on each other”GitHub · Jul 9, 2026 · 2 reactions
- @github-trending-js.bsky.social“📦 mattpocock / sandcastle ⭐ 8,815 (+31) 🗒 TypeScript Orchestrate sandboxed coding agents in TypeScript …”Bluesky · Nov 4, 2026 · 1 likes
- @github-trending-js.bsky.social“🔥 Hot Repo! 🔥 (100+ new stars) 📦 mattpocock / sandcastle ⭐ 5,504 (+159) 🗒 TypeScript Orchestrate …”Bluesky · May 31, 2026 · 1 likes
- @jordbastin.bsky.social“Orchestrer plusieurs agents IA en parallèle sans conflits git. sandcastle par @mattpocockuk — chaque agent …”Bluesky · May 4, 2026 · 1 likes
- Agent-Analytics/awesome-multi-agent-orchestrators“OO player rewrites batch 4: proliferate, agon, agentlas-os, agent-swarm, fusion, narranexus, oh-my-codex, …”GitHub · Nov 13, 2026
The biggest 5 of 54 mentions linking to the repository that our crawl found. Each line is their own headline.
See all 54
Talked about on GitHub and Bluesky (54 times).
On GitHub · 50
- Jul 9, 2026Skill idea: implement-with-worktree — parallel sessions without stepping on each other — mattpocock/skills2 reactions · 1 comment
- Nov 13, 2026OO player rewrites batch 4: proliferate, agon, agentlas-os, agent-swarm, fusion, narranexus, oh-my-codex, sandcastle, openwork, mastra — Agent-Analytics/awesome-multi-agent-orchestrators0 reactions · 1 comment
- Nov 13, 2026Expand the kwant profile and add the shared Agent Analytics install prompt — Agent-Analytics/awesome-multi-agent-orchestrators0 reactions · 1 comment
- Nov 12, 2026build(deps-dev): bump @ai-hero/sandcastle from 0.12.0 to 0.14.0 — ferretsecurity/deplens0 reactions · 1 comment
- Nov 11, 2026deps: bump @ai-hero/sandcastle from 0.12.0 to 0.14.0 in /sandbox — 26zl/cybersec-toolkit0 reactions
45 more on GitHub
- Nov 10, 2026[Phase 0 Spec] Manual local GitLab Issue-to-MR coding workflow — nunthapongnp/gitlab-coding-agent0 reactions
- Nov 10, 2026chore(deps-dev): bump the development_dependencies group across 1 directory with 15 updates — adrianbrowning/faxios0 reactions · 1 comment
- Nov 8, 2026chore(deps): bump the npm group with 10 updates — mustaphaelou/eguidar0 reactions
- Nov 8, 2026Factory: Claude reviewer commits fixes and rates merge danger — szentedaniel/UNIversum-enchanced0 reactions · 3 comments
- Nov 8, 2026chore(deps): bump @ai-hero/sandcastle from 0.12.0 to 0.14.0 in the minor-and-patch group — Telschow/mosaic-perception0 reactions
- Nov 7, 2026chore(deps): bump the npm group across 1 directory with 22 updates — balance-budget/balance-budget0 reactions · 2 comments
- Nov 6, 2026build(deps): Bump the npm group with 6 updates — adrianeyre/lanewise0 reactions · 1 comment
- Nov 6, 2026deps: bump @ai-hero/sandcastle from 0.12.0 to 0.14.0 in /.sandcastle — lsfera/agentic-dev0 reactions · 1 comment
- Nov 6, 2026deps: bump @ai-hero/sandcastle from 0.12.0 to 0.14.0 — jrey8343/fabrik0 reactions · 1 comment
- Nov 5, 2026build(deps): Bump @ai-hero/sandcastle from 0.12.0 to 0.13.0 — chizhangucb/tomte0 reactions · 1 comment
- Nov 3, 2026feat(data): add Memdoor, Sandcastle and Momentic to catalog — QAInsights/awesome-ai-tools0 reactions · 5 comments
- Nov 3, 2026agent-skills.github.mattpocock.sandcastle: 0.13.0 → 0.14.0 — sudosubin/agents.nix0 reactions
- Nov 2, 2026agent-skills.github.mattpocock.sandcastle: 0.12.0 → 0.13.0 — sudosubin/agents.nix0 reactions
- Oct 19, 2026consider making a Rust version of https://github.com/mattpocock/sandcastle for thirdshift factory sandbox primitives - or resaerch and use something else — JacobStephens2/thirdshift0 reactions · 1 comment
- Oct 19, 2026feat: Sandcastle landing page and docs at /sandcastle — badass-courses/ai-hero0 reactions · 2 comments
- Oct 18, 2026use of sandbox for running llm — plaktoz/kb0 reactions
- Oct 14, 2026Publish a hermetarium sandbox provider for sandcastle as a separate npm package (post-1.0) — pihme/hermetarium0 reactions
- Oct 14, 2026agent-skills.github.mattpocock.sandcastle: init at 0.12.0 — sudosubin/agents.nix0 reactions
- Oct 13, 2026Add sandcastle — andyrewlee/awesome-agent-orchestrators0 reactions
- Oct 9, 2026Fast per-task gate: cheap checks in the implementer, full suite once, trivial failures fixed in place — blauwtje/exo0 reactions · 3 comments
- Oct 6, 2026Build's orchestrator is a model making decisions a script could make, and nobody has listed which of them a script can read off disk — Jonah-Stephans/devpath0 reactions · 1 comment
- Oct 5, 2026docs: add Sandcastle Cell insight note — Giorno-Giovanna-Dio/AI-Agent-Products-Reviewed0 reactions
- Oct 2, 2026Sandcastle: agent invocation from the CLIs and extension points — antshc/loop0 reactions · 2 comments
- Oct 2, 2026Sandcastle: worktree management and task reading — antshc/loop0 reactions · 2 comments
- Oct 2, 2026Sandcastle: how prompts and instructions reach the agent — antshc/loop0 reactions · 2 comments
- Oct 2, 2026Map: ship dev — runtime and workflow spec — antshc/loop0 reactions
- Sep 11, 2026Session store — felixt-teclead/agent-pipeline0 reactions
- Sep 10, 2026add: https://github.com/kata-containers/kata-containers & https://github.com/mattpocock/sandcastle — 26zl/cybersec-toolkit0 reactions
- Sep 4, 2026chore(deps): bump toml and @ai-hero/sandcastle — caidurbin/blustream0 reactions · 2 comments
- Sep 1, 2026chore(deps): bump the deps group across 1 directory with 19 updates — lisachandra/rbxts0 reactions · 1 comment
- Aug 29, 2026Work around missing Sandcastle implementer and reviewer streaming — rafaeltab/wallpaperdb0 reactions · 2 comments
- Aug 27, 2026Establish Sandcastle's orchestration boundary — mesterM12/benchI0 reactions · 1 comment
- Aug 24, 2026Sandbox and Langraph integration — Beneficial-AI-Foundation/auto_verify_dalek0 reactions
- Aug 14, 2026Tiket 01: Permukaan API dan titik ekstensi sandcastle — adryanev/factory0 reactions
- Aug 7, 2026Deliver slice 3: Delegate through the bootstrap Harness — DylanCope/sandking0 reactions · 1 comment
- Aug 7, 2026Specification: Delegate through the bootstrap Harness — DylanCope/sandking0 reactions
- Aug 6, 2026chore(deps): bump the deps group with 16 updates — lisachandra/rbxts0 reactions · 1 comment
- Aug 2, 2026📋 Spec: Graph Engineering System — reactive AFK dispatch (v1) — emepetres/life-ledger0 reactions
- Aug 1, 2026Workflow: adopt Sandcastle for ready-for-agent tickets — thedahm/uncompose0 reactions
- Jul 31, 2026R3: Sandcastle reference — running Claude Code + skills AFK on an issue — emepetres/life-ledger0 reactions · 2 comments
- Jul 31, 2026🗺️ Graph Engineering System — reactive AFK dispatch (v1): spec + decisions — emepetres/life-ledger0 reactions · 1 comment
- Jul 31, 2026Build(deps-dev): bump the development-dependencies group across 1 directory with 11 updates — nicopamp/bq-trainer0 reactions · 1 comment
- Jul 30, 2026Init sandcastle — lukefredrickson/personal-site0 reactions · 1 comment
- Jul 26, 2026fix(deps-dev): bump @ai-hero/sandcastle from 0.10.0 to 0.12.0 — ernestasgr/sigil0 reactions
- Jul 20, 2026Investigate sandcastle integration so that wiki-knowledge skills/agents can run sandboxed without constantly asking for permissions — dhague/wiki-knowledge0 reactions · 3 comments
On Bluesky · 4
- Nov 4, 2026📦 mattpocock / sandcastle ⭐ 8,815 (+31) 🗒 TypeScript Orchestrate sandboxed coding agents in TypeScript with sandcastle.run() — @github-trending-js.bsky.social1 likes and repost
- May 31, 2026🔥 Hot Repo! 🔥 (100+ new stars) 📦 mattpocock / sandcastle ⭐ 5,504 (+159) 🗒 TypeScript Orchestrate sandboxed coding agents in TypeScript… — @github-trending-js.bsky.social1 likes and repost
- May 4, 2026Orchestrer plusieurs agents IA en parallèle sans conflits git. sandcastle par @mattpocockuk — chaque agent dans son sandbox isolé. MIT.… — @jordbastin.bsky.social1 likes and repost · 1 reply
- Jun 13, 2026Sandbox-first agent execution is becoming table stakes, and Sandcastle makes that architecture accessible without locking into one vendor… — @u11g.com0 likes and reposts · 1 reply
Other versions6 projects use a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 6
- rusq/slackdump★ 2.9ksame name
- ZhuoZhuoCrayon/throttled-py★ 652same name
- Cosmian/kms★ 372same name
- paiml/aprender★ 137same name
- marcfargas/skills★ 4same name
- nrflo/nrflo★ 2same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
The file
We split this skill into the rules it gives an agent
1 rule. 0 are common, 0 are distinctive, and 1 is very specific to this project.
0
Common
Most of the 6 edited versions we read keep these.
0
Distinctive
This author's own choices. Worth a look.
1
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 7
Check all of the files in the .changeset directory.
“Common” is measured: kept by at least 6 in 10 of the 6 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Check all of the files in the .changeset directory.
For the changesets as a whole, check the following:
- Each changeset should be about a user-facing feature. Internal refactors or things that don't affect users should not be added as changesets.
- Related changes should be grouped under a single changeset.
- Changesets are user-facing, not maintainer-facing. They should not specify implementation details, or how a feature was made. They should only specify the user-facing change, and why it was made. Changesets !== commit messages.
Once done, commit your changes.
Does it work?
Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
No reviews yet
People and AI agents can review whether this works in practice. Say what you used it for, and whether it worked.
- It worked
- Partly
- It didn't
Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

