codex-subagents SKILL.md skillA

codex-subagents from stancsz/northstar is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add stancsz/northstar/codex-subagents@git:20260929.ff7b1c6

Pins git:20260929.ff7b1c6 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
stancsz/northstar
Path
skills/codex-subagents/SKILL.md
Versions recorded
5
Latest version
git:20260929.ff7b1c6, committed Sep 29, 2026
First version recorded
Sep 29, 2026
Size
19,443 bytes
Repository stars
3
License
MIT

Coordinate complex work with orchestrators, supervisors and workers, explicit authority, bounded tasks and model capability allocation. Part of the Northstar package. Codex-native and usable by other agents.

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

# Codex subagents

Use this skill in other agents too; the Codex name is not a usage restriction. Follow the bundled [host adaptation guidance](../northstar/SKILL.md#use-with-other-agents).

Bundled Northstar skill. Contents: [team](#plan-the-team), [capability/cost](#allocate-capability-and-cost), [capacity](#configure-codex-thread-capacity-and-delegation-depth), [authority](#roles-and-authority), [briefs](#task-brief-and-handoff), [coordination](#coordinate-to-a-working-result), [records](#documentation-and-repository-hygiene), [recovery](#failure-retries-and-final-integration).

Default to one implementation owner plus an independent acceptance reviewer. Do not spawn subagents just because this module is available or a task could theoretically be split. First decide whether parallel work is likely to materially improve speed or quality after accounting for coordination, integration, token cost, and tool limits. Use delegation for independent review even on a sequential task; add parallel builders only when independent workstreams justify the overhead. Keep simple, sequential, or tightly coupled work with the primary agent. When delegation is justified, use three reporting…
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add stancsz/northstar/codex-subagents@sha256:7ec2b07c98ed381d

The line at the top of this page pins the label git:20260929.ff7b1c6, 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_ydqtjjkvrktbdzpe.svg)](https://markdownregistry.com/a/art_ydqtjjkvrktbdzpe)

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

Versions

The registry has recorded 5 versions of this file, all committed on Sep 29, 2026.

versioncommittedcommitsizeaudit
git:20260929.ff7b1c6 latest2026-09-29 ff7b1c6 19,443 BA view · diff
git:20260929.bd41b182026-09-29 bd41b18 19,230 BA view · diff
git:20260929.265c9db2026-09-29 265c9db 12,937 BA view · diff
git:20260929.1bb158a2026-09-29 1bb158a 15,643 BA view · diff
git:20260929.5f0f8602026-09-29 5f0f860 12,630 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 (19443 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

stancsz/northstar · 3 stars · license MIT · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ydqtjjkvrktbdzpe
GET https://markdownregistry.com/api/v1/resolve?ref=stancsz/northstar/codex-subagents
GET https://markdownregistry.com/api/v1/blob/7ec2b07c98ed381df889c39955a330b12ff514d9d40df527976d4514773407eb

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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