Plugin Extension Writer Agent
Creates plug-ins, browser extensions, IDE integrations, and SDK modules. Expert in extensible architectures, plugin systems, and modular development patterns.
- Type
- Subagent
- Repository
- ChrisRoyse/610ClaudeSubagents
- GitHub stars
- 117
- License
- Not declared
- Repo last updated
- Aug 10, 2025
- Source file
- agents/plugin-extension-writer-agent.md
What Plugin Extension Writer Agent is
Plugin Extension Writer Agent is a subagent published in the ChrisRoyse/610ClaudeSubagents repository on GitHub, which has about 117 stars.
A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.
Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Plugin Extension Writer Agent and get back a compact result.
It is set up to use these tools: Read, Write, Edit, MultiEdit, Grep, Glob, Bash. Limiting tools is a good sign: the subagent can only do what those tools allow.
How to install Plugin Extension Writer Agent
Claude Code
- Download plugin-extension-writer-agent.md from the repository.
- Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
- Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Claude Cowork
- Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
- Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
The repository does not declare an open-source license, so we list only the outline of the file here. Read the full text on GitHub.
- ALWAYS CLOSELY INSPECT THE RESULTS OF SUBAGENTS AND MAKE SURE THEY AREN'T LIEING AND BEING HONEST AND TRUTHFUL.
- Core Plugin Architecture Expertise (2025 Enhanced)
- Browser Extension Development (2025)
- IDE and Editor Extensions
- Platform-Specific Plugin Systems
- SDK and Library Development
- Plugin Architecture Patterns
- Cross-Platform Development
- Security and Sandboxing
- Plugin Discovery and Distribution
- Configuration and Settings Management
- Testing Plugin Systems
- Plugin Communication Patterns
- Development Tools and Frameworks
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Plugin Extension Writer Agent?
Plugin Extension Writer Agent is a subagent for Claude Code and Claude Cowork from the ChrisRoyse/610ClaudeSubagents repository on GitHub. Creates plug-ins, browser extensions, IDE integrations, and SDK modules. Expert in extensible architectures, plugin systems, and modular development patterns.
How do I install Plugin Extension Writer Agent in Claude Code?
Download plugin-extension-writer-agent.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Can I use Plugin Extension Writer Agent in Claude Cowork?
Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
Is Plugin Extension Writer Agent safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
Similar resources
- Information Architecture Expert Expert in content organization, navigation structures, taxonomy design, and findability optimization. Use for creating intuitive information hierarchies and user-centric content structures. Subagent · ChrisRoyse/610ClaudeSubagents
- Industry Vertical Needs Agent Expert in translating broad software features into industry-specific benefits, analyzing vertical market requirements, and developing targeted value propositions for healthcare, education, finance, manufacturing, and other specialized sectors using 2025 industry intelligence standards. Subagent · ChrisRoyse/610ClaudeSubagents
- Influence Propagation Simulator Agent Models how content spreads through social networks and predicts reach potential through network analysis, influence mapping, and propagation velocity simulation Subagent · ChrisRoyse/610ClaudeSubagents
- Innovation Creative Problem Solving Agent Expert in systematic innovation methodologies, creative thinking techniques, and breakthrough solution development across technical, business, and personal domains Subagent · ChrisRoyse/610ClaudeSubagents
- Policy Compliance Enforcement Expert in checking containers and runtime for security and compliance baselines (NIST/PCI/DISA/OWASP). Use for automated policy enforcement and comprehensive compliance validation. Subagent · ChrisRoyse/610ClaudeSubagents
- Playwright Testing Specialist Ultra-specialized Playwright testing framework expert with comprehensive cross-browser automation, API testing, mobile testing, and modern web testing strategy mastery. Focused on Playwright's latest version with advanced features, parallel execution, and enterprise testing patterns following 2025 best practices. Subagent · ChrisRoyse/610ClaudeSubagents
- Policy Impact Simulation Agent Simulates policy impact across demographic and economic groups using validated economic models, historical policy data, and demographic analysis with transparent assumptions and uncertainty quantification Subagent · ChrisRoyse/610ClaudeSubagents
- Player Performance Prediction Agent Individual player statistics and performance trajectory forecasting using advanced analytics and career modeling. Only predicts with verified performance data integration. Subagent · ChrisRoyse/610ClaudeSubagents