agent-creator SKILL.md skillA

agent-creator from francostino/opencode-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add francostino/opencode-skills-collection/agent-creator@git:20261015.fac8b7e

Pins git:20261015.fac8b7e in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
francostino/opencode-skills-collection
Path
bundled-skills/agent-creator/SKILL.md
Versions recorded
3
Latest version
git:20261015.fac8b7e, committed Oct 15, 2026
First version recorded
Jun 22, 2026
Size
11,882 bytes
Repository stars
87
License
MIT

Create custom AI subagents with proper plugin structure, persona generation, and companion routing skills.

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

# Agent Creator

A skill for creating custom subagents packaged inside proper plugins. This skill
handles the entire flow: gathering requirements, generating a rich persona from
even a one-line description, scaffolding the correct folder structure, and
optionally creating a companion skill that auto-routes tasks to the new agent.

## When to use

Use this skill whenever you need a dedicated, isolated "brain" to handle a specific repetitive task, or when you find yourself repeatedly pasting the same massive system prompt or constraints into the main chat. Creating a dedicated subagent keeps the main conversation lightweight and focused.

## Why this exists

The contributed example assumes a Windows-style host layout `<appDataDir>\config\plugins\`; it is not a universal Codex/Claude plugin path. For
a subagent to be properly registered and invokable, it needs to be inside a
plugin's `agents/` directory with a valid `plugin.json`. Getting this structure
right manually is tedious and error-prone. This skill automates the entire
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add francostino/opencode-skills-collection/agent-creator@sha256:545175099d57f298

The line at the top of this page pins the label git:20261015.fac8b7e, 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_7mxwviccfoa3rcqr.svg)](https://markdownregistry.com/a/art_7mxwviccfoa3rcqr)

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

Versions

The registry has recorded 3 versions of this file, between Jun 22, 2026 and Oct 15, 2026, about one every 57 days.

versioncommittedcommitsizeaudit
git:20261015.fac8b7e latest2026-10-15 fac8b7e 11,882 BA view · diff
git:20260707.168343c2026-07-07 168343c 11,095 BA view · diff
git:20260622.928bb472026-06-22 928bb47 10,449 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 (11882 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

francostino/opencode-skills-collection · 87 stars · license MIT · pushed 2026-10-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7mxwviccfoa3rcqr
GET https://markdownregistry.com/api/v1/resolve?ref=francostino/opencode-skills-collection/agent-creator
GET https://markdownregistry.com/api/v1/blob/545175099d57f2987f27c205d49a99f7b2a35e7ad55aa714d24d7a3108b4c35a

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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