spawn SKILL.md skillA

spawn from scdenney/open-science-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add scdenney/open-science-skills/spawn@git:20261008.eaad168

Pins git:20261008.eaad168 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
scdenney/open-science-skills
Path
archive/codex/spawn/SKILL.md
Versions recorded
1
Latest version
git:20261008.eaad168, committed Oct 8, 2026
Size
15,443 bytes
Repository stars
69
License
a license file GitHub does not identify

Spawn full peer Codex or Claude sessions in their own panes and git worktrees — real sessions, not subagents — briefed by the lead and merged back. Not for bounded consults a subagent covers. Use when work must outlive or run beside this session, needs its own worktree, or must stay user-steerable.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Spawn

You are the **lead**. A spawned peer is a **full agent session** — its own context window, its own approval flow, its own lifetime, steerable by the user in a visible pane. That makes it a third kind of delegate, above the two the Codex library already has:

| Tier | What it is | Lifetime | Reach it via |
|---|---|---|---|
| subagent | `spawn_agent` child — context isolation, same model | dies with the thread | `$orchestrate` |
| one-shot | fresh `codex exec` / `claude -p` process | one turn, deliberately not resumable | advisor and peer scripts |
| **spawned peer** | full interactive session, own pane + worktree | survives you; user-steerable | this skill |

## Preflight — the sandbox gate

Everything here drives the herdr socket through the `herdr` CLI, and the socket lives outside the workspace (`~/.config/herdr/herdr.sock`). Gate first, fail closed:

1. `HERDR_ENV=1`? If not, you are not inside herdr — jump to Fallbacks.
2. `herdr status` — if it answers, you have socket access; proceed.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add scdenney/open-science-skills/spawn@sha256:a362a5fdc118c30a

The line at the top of this page pins the label git:20261008.eaad168, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_xbmsilpnxg42ug7j.svg)](https://markdownregistry.com/a/art_xbmsilpnxg42ug7j)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 8, 2026.

versioncommittedcommitsizeaudit
git:20261008.eaad168 latest2026-10-08 eaad168 15,443 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (15443 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

scdenney/open-science-skills · 69 stars · license a license file GitHub does not identify · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xbmsilpnxg42ug7j
GET https://markdownregistry.com/api/v1/resolve?ref=scdenney/open-science-skills/spawn
GET https://markdownregistry.com/api/v1/blob/a362a5fdc118c30afe803cf146a7a91048f9f5327ab6ede2cea59a50d2d72e72

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in scdenney/open-science-skills

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