skills.rest
filipowm
filipowmCOMMUNITY
Explore all skills by this author →
GitHub

modify-agent

Edit frontmatter and system prompts of existing Claude Code subagents.

Updated Feb 17, 2026
Search Tags:#prompt engineering#claude#agent#configuration#refactor#update
One-click install
npx skills add https://github.com/filipowm/claude-plugins --skill modify-agent-filipowm
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: modify-agent
Source: https://github.com/filipowm/claude-plugins/tree/main/plugins/claude-helper/skills/modify-agent
Command: npx skills add https://github.com/filipowm/claude-plugins --skill modify-agent-filipowm

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill streamlines the process of updating and improving existing Claude agents, ensuring they remain effective and aligned with evolving needs.

Core Features & Use Cases

  • Agent Refinement: Edit, update, or refactor any Claude agent's configuration and system prompt.
  • Scope Management: Facilitates changes across project, user, or plugin-level agents.
  • Use Case: You have an agent designed for summarizing code, but its descriptions are no longer accurate after a recent project change. Use this Skill to update its description and ensure it's triggered correctly.

Quick Start

Use the modify-agent skill to update the description of the 'code-summarizer' agent to focus on Python code.

Frequently Asked Questions about modify-agent

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I update a Claude Code custom subagent's system prompt and frontmatter?▼

Update a Claude Code custom subagent by using this Skill to edit its frontmatter and system prompt. It validates agent structure and prompt quality while supporting updates, refactoring, and scope changes across project, user, and plugin levels.

Can I refactor a Claude agent's configuration to change its scope from project to user level?▼

Yes, you can refactor a Claude agent's configuration to change its scope. This Skill supports scope management across project, user, and plugin levels, allowing you to transition agents while validating their structure and prompt quality.

What is the best way to fix a Claude agent whose description is no longer accurate after project changes?▼

The best way to fix an inaccurate Claude agent description is to use this Skill to update its system prompt and frontmatter. It refines the agent's configuration to ensure it triggers correctly based on your recent project changes.

Does agent modification validate prompt quality against established guidelines?▼

Yes, agent modification validates prompt quality against established guidelines. When editing frontmatter and system prompts, the Skill checks the agent's structure and prompt quality to ensure it remains effective and aligned with standards.

When should I refactor a Claude subagent instead of creating a new one?▼

Refactor a Claude subagent instead of creating a new one when the core functionality remains relevant but its descriptions, scope, or system prompt need refinement. This Skill updates existing agents to align with evolving needs without starting from scratch.

Related Skills

Explore More Software Engineering Skills→
henmessihenmessi
1

Agent Development

Design frontmatter and system prompts for Claude Code plugin agents.

Community
Advanced
phnx-labsphnx-labs
15

workflows

Create and execute reusable multi-agent pipelines with YAML frontmatter.

Official
Advanced
hjemmesidekongenhjemmesidekongen
1

agent-creator

Create and validate Claude Code agents with frontmatter, prompts, and tool configurations.

Community
Advanced
SDiamante13SDiamante13
7

skill-builder

Create, edit, or convert Claude Code Skills with structured files.

Community
Advanced