bjornmelin/dev-skills · skills/subagent-creator/SKILL.md

subagent-creator skillA

subagent-creator is agent-read markdown (skill) from bjornmelin/dev-skills: Create, validate, install, and smoke-test Codex custom subagents from TOML templates. Use for ~/.codex/agents or project .codex/agents roles, subagent templates, model and sandbox defaults, or reusable agent packs..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add bjornmelin/dev-skills/subagent-creator@git:20260722.16547f2
Exact content
mdr add bjornmelin/dev-skills/subagent-creator@sha256:80cf232dff084f3e

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_fz7qgzg7q53x54d5.svg)](https://markdownregistry.com/a/art_fz7qgzg7q53x54d5)

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Versions

versioncommittedcommitsizeaudit
git:20260722.16547f2 latest2026-07-22 16547f2 4,177 BA view · diff
git:20260507.43521c52026-05-07 43521c5 4,143 BA view · diff
git:20260507.60a70962026-05-07 60a7096 3,745 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (4177 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

bjornmelin/dev-skills · 7 stars · license none · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fz7qgzg7q53x54d5
GET https://markdownregistry.com/api/v1/resolve?ref=bjornmelin/dev-skills/subagent-creator
GET https://markdownregistry.com/api/v1/blob/80cf232dff084f3eb5772dd5f796e4e9f0345817e0ba492da9b0f15ff990a5ce

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.