agent-customization
Create, update, review, fix, or debug VS Code agent customization files (.instructions.md, .prompt.md, .agent.md, SKILL.md, copilot-instructions.md, AGENTS.md). Use for: saving coding preferences; troubleshooting why instructions/skills/agents are ignored or not invoked; configuring applyTo patterns; defining tool restrictions; creating custom agent modes or specialized workflows; packaging domain knowledge; fixing YAML frontmatter syntax.
npx skills add majiayu000/claude-skill-registry --skill agent-customization --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 Customization ## Decision Flow | Primitive | When to Use | |-----------|-------------| | Workspace Instructions | Always-on, applies everywhere in the project | | File Instructions | Explicit via `applyTo` patterns, or on-demand via `description` | | MCP | Integrates external systems, APIs, or data | | Custom Agents | Subagents for context isolation, or multi-stage workflows with tool restrictions | | Prompts | Single focused task with parameterized inputs | | Skills | On-demand workflow with bundled assets (scripts/templates) | ## Quick Reference Consult the reference docs for templates, domain examples, advanced frontmatter options, asset organization, anti-patterns, and creation checklists. | Type | File | Location | Key Field | Reference | |------|------|----------|-----------|---------| | Workspace Instructions | `copilot-instructions.md`, `AGENTS.md` | `.github/` or root | N/A (always applies) | [Link](./primitives/workspace-instructions.md) | | File Instructions | `*.instructions.md` | `.github/instructions/` | `applyTo` (explicit), `description` (on-demand) | [Link](./primitives/instructions.md) | | Prompts | `*.prompt.md` | `.github/prompts/` | `description` (user-
- Decision Flow
- Quick Reference
- Creation Process
- 1. Determine Scope
- 2. Choose the Right Primitive
- 3. Create the File
- 4. Validate
- Edge Cases
What does the agent-customization skill do?
Create, update, review, fix, or debug VS Code agent customization files (.instructions.md, .prompt.md, .agent.md, SKILL.md, copilot-instructions.md, AGENTS.md). Use for: saving coding preferences; troubleshooting why instructions/skills/agents are ignored or not invoked; configuring applyTo patterns; defining tool restrictions; creating custom agent modes or specialized workflows; packaging domain knowledge; fixing YAML frontmatter syntax.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill agent-customization --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.