agent-development
Generates Claude Code plugin agent .md files: writes YAML frontmatter (name, model, color, tools, hooks, disallowedTools), crafts system prompts, and creates triggering example blocks with context and commentary. Validates agent structure against naming, length, and format constraints. Use when the user asks to create an agent, add an agent, write a subagent, configure agent frontmatter, design agent system prompts, set agent tools or colors, build an autonomous agent, or add agent hooks.
npx skills add majiayu000/claude-skill-registry --skill agent-development-oshankhz-cc-swiss-knife-3 --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Agent Development for Claude Code Plugins Agents are autonomous markdown files with YAML frontmatter that handle multi-step tasks independently. Agents are for autonomous work; commands are for user-initiated actions. ## Workflow 1. Define agent purpose and triggering conditions 2. Create `agents/agent-name.md` with frontmatter + system prompt body 3. Include 2-4 `<example>` blocks in description 4. Validate structure (see constraints below) 5. Test triggering with real scenarios 6. If validation fails: check error recovery table, fix, re-validate ## Agent File Template ```markdown --- name: agent-identifier description: Use this agent when [triggering conditions]. Examples: <example> Context: [Situation] user: "[Request]" assistant: "[Response before triggering]" <commentary>[Why this agent triggers]</commentary> </example> model: inherit color: blue tools: ["Read", "Write", "Grep"] --- You are [role] specializing in [domain]. **Your Core Responsibilities:** 1. [Primary task] 2. [Secondary task] **Process:** 1. [Step 1] 2. [Step 2] **Output Format:** [What to return and how] **Edge Cases:** - [Case]: [How to handle] ``` ## Frontmatter Reference | Field | Required | Format | Cons
- Workflow
- Agent File Template
- Frontmatter Reference
- Description Field
- Hooks
- disallowedTools
- System Prompt Guidelines
- Agent Organization
- Best Practices
- Error Recovery
- Additional Resources
What does the agent-development skill do?
Generates Claude Code plugin agent .md files: writes YAML frontmatter (name, model, color, tools, hooks, disallowedTools), crafts system prompts, and creates triggering example blocks with context and commentary. Validates agent structure against naming, length, and format constraints. Use when the user asks to create an agent, add an agent, write a subagent, configure agent frontmatter, design agent system prompts, set agent tools or colors, build an autonomous agent, or add agent hooks.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill agent-development-oshankhz-cc-swiss-knife-3 --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.