creating-an-agent SKILL.md skillA
creating-an-agent from ed3dai/ed3d-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ed3dai/ed3d-plugins/creating-an-agent@git:20260204.611bfd1Pins git:20260204.611bfd1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ed3dai/ed3d-plugins
- Path
plugins/ed3d-extending-claude/skills/creating-an-agent/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260204.611bfd1, committed Feb 4, 2026
- First version recorded
- Jan 15, 2026
- Size
- 8,105 bytes
- Repository stars
- 253
- License
- none declared
Use when creating specialized subagents for Claude Code plugins or the Task tool - covers description writing for auto-delegation, tool selection, prompt structure, and testing 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
# Creating an Agent **REQUIRED BACKGROUND:** Read ed3d-extending-claude:writing-claude-directives for foundational guidance on token efficiency, compliance techniques, and directive structure. This skill focuses on agent-specific patterns. ## What is an Agent? An **agent** is a specialized Claude instance with: - Defined tools (Read, Edit, Bash, etc.) - Specific responsibilities (code review, security audit, research) - A focused system prompt Agents are spawned via the Task tool or defined in plugin `agents/` directories. ## When to Create an Agent **Create when:** - Task requires specialized expertise - Workflow benefits from tool restrictions - You want consistent behavior across invocations - Task is complex enough to warrant context isolation **Don't create for:** - Simple, one-off tasks - Tasks the main Claude handles well - Purely conversational interactions ## Agent File Structure ``` agents/ my-agent.md ``` **Template:** ```markdown --- name: agent-name description: Use when [specific triggers] - [what agent does] tools: Read, Grep, Glob, Bash model: sonnet --- # Agent Name [Agent system prompt - who they are, what they do] ## Responsibilities - Task 1 …
Read the whole file at its exact version.
How to install
mdr add ed3dai/ed3d-plugins/creating-an-agent@sha256:5163c6fb0024fcb9The line at the top of this page pins the label git:20260204.611bfd1, 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_bghcwjpvv2ch2ntw)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jan 15, 2026 and Feb 4, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260204.611bfd1 latest | 2026-02-04 | 611bfd1 | 8,105 B | A | view · diff |
| git:20260123.05d7f8d | 2026-01-23 | 05d7f8d | 8,083 B | A | view · diff |
| git:20260115.cf17c55 | 2026-01-15 | cf17c55 | 8,018 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 (8105 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
ed3dai/ed3d-plugins · 253 stars · license none declared · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bghcwjpvv2ch2ntw GET https://markdownregistry.com/api/v1/resolve?ref=ed3dai/ed3d-plugins/creating-an-agent GET https://markdownregistry.com/api/v1/blob/5163c6fb0024fcb93398628cf5eb0d728d42d2ef12a794f9d4c565a49dc38c7c
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.