claude-subagent-creator SKILL.md skillA
claude-subagent-creator from bjornmelin/dev-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bjornmelin/dev-skills/claude-subagent-creator@git:20260625.dee2db9Pins git:20260625.dee2db9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bjornmelin/dev-skills
- Path
plugins/claude-core/skills/claude-subagent-creator/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260625.dee2db9, committed Jun 25, 2026
- Size
- 4,334 bytes
- Repository stars
- 8
- License
- none declared
Author, validate, and install custom Claude Code subagents as .claude/agents Markdown files. Use when the user asks to create a subagent, custom agent, or .claude/agents role; define a reusable reviewer, explorer, planner, or worker persona; set an agent's model or tool allowlist; or turn a recurring workflow into a delegatable role. Produces Markdown agent files with YAML frontmatter (name, description, model, tools) plus a focused system-prompt body, scoped to the smallest tool surface that…
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
# Claude subagent creator Create well-scoped custom subagents Claude Code can auto-delegate to. A subagent is a Markdown file with YAML frontmatter plus a system-prompt body; it runs in its own context window with its own tool surface. ## When to use - The user wants a reusable persona (reviewer, explorer, planner, scoped worker). - A workflow recurs often enough to deserve a named role `fan-out` can target. - You need to pin a model or restrict tools for a class of delegated work. For a one-off delegation, don't author a file — just use `fan-out`'s inline spawn contract. ## Agent file anatomy `./.claude/agents/<name>.md` (project) or `~/.claude/agents/<name>.md` (user): ```markdown --- name: <hyphen-case, matches filename> description: <what it does + WHEN to delegate to it — explicit triggers; this drives auto-selection> model: opus # or sonnet / haiku / omit to inherit the session model tools: Read, Grep, Glob, Bash # smallest surface that works; omit = inherit all --- <system prompt: role, exact scope, output contract, hard boundaries> ``` ## Authoring workflow 1. **Name + intent** — hyphen-case name; one clear job. Avoid catch-alls. …
Read the whole file at its exact version.
How to install
mdr add bjornmelin/dev-skills/claude-subagent-creator@sha256:e641948cfdd2e4aaThe line at the top of this page pins the label git:20260625.dee2db9, 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_kl5msxpklvf76ywb)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 25, 2026.
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 (4334 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
bjornmelin/dev-skills · 8 stars · license none declared · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kl5msxpklvf76ywb GET https://markdownregistry.com/api/v1/resolve?ref=bjornmelin/dev-skills/claude-subagent-creator GET https://markdownregistry.com/api/v1/blob/e641948cfdd2e4aaf7e40669cb4f5adf227d3f9ecd3bdde3065d0474c5620b21
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.