authoring-subagents SKILL.md skillA
authoring-subagents from richfrem/agent-plugins-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add richfrem/agent-plugins-skills/authoring-subagents@git:20261027.494b440Pins git:20261027.494b440 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- richfrem/agent-plugins-skills
- Path
plugins/agent-extension-authoring/.apm/skills/authoring-subagents/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261027.494b440, committed Oct 27, 2026
- First version recorded
- Oct 24, 2026
- Size
- 4,222 bytes
- Repository stars
- 7
- License
- MIT
Creates and audits sub-agent definitions (agents/*.md): focused system prompt, frontmatter, tool sandbox and trigger examples. Use when the user wants to write, check or fix a sub-agent that needs an isolated context, strict tool bounds or an adversarial persona (reviewer, auditor, red team). Not for interactive or multi-turn wizards (those are skills, use authoring-skills), simple procedures, or pointer stubs that only delegate to a skill.
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
# Authoring Sub-Agents (`authoring-subagents`) Scaffolds sub-agent files and audits them against the authoring contract. Sub-agents are the exception, not the default. ## Contents - [Constraints](#constraints) • [Modes](#modes) • [Quick start](#quick-start) • [Workflow](#workflow) • [Verification](#verification) • [References](#references) ## Constraints 1. **Three reasons justify a sub-agent**: context isolation, sandboxed tool restrictions, or independent/adversarial review; persona alone is never sufficient justification ([skills-vs-agents-decision-framework.md](references/skills-vs-agents-decision-framework.md)). Interactive facilitators and procedures belong in skills in the main thread. 2. **No pointer wrappers**: an agent that merely says "please run skill X" must not exist; however, a subagent that controls its own prompt and tool bounds may preload skills via `skills:`. 3. **Explicit tool bounds** and denial rules; the definition is self-contained and never depends on a source checkout. 4. **Model choices are not made here**: the `model` field defaults to `inherit`; model names and tiers belong to the `cli-agent` skill. …
Read the whole file at its exact version.
How to install
mdr add richfrem/agent-plugins-skills/authoring-subagents@sha256:11b71611c2da0b99The line at the top of this page pins the label git:20261027.494b440, 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.
[](https://markdownregistry.com/a/art_gmazxjjk2zkkb25z)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 24, 2026 and Oct 27, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261027.494b440 latest | 2026-10-27 | 494b440 | 4,222 B | A | view · diff |
| git:20261024.3106a82 | 2026-10-24 | 3106a82 | 4,144 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4222 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
richfrem/agent-plugins-skills · 7 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gmazxjjk2zkkb25z GET https://markdownregistry.com/api/v1/resolve?ref=richfrem/agent-plugins-skills/authoring-subagents GET https://markdownregistry.com/api/v1/blob/11b71611c2da0b99c340f2514bff955a16fff8ae9f41bcd34583c9636182bb24
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.