excalidraw

Claude SDLC Plugin Marketplace

A plugin marketplace for Claude Code spanning software development lifecycle automation, Gas Town bead-plan workflows, content generation (presentations, diagrams, documents), AI plugin testing, Copilot CLI development, and multi-agent team bootstrapping.

Quick Start

# Add the marketplace to Claude Code
/plugin marketplace add https://github.com/danielscholl/claude-sdlc

# Install any plugin
/plugin install sdlc
/plugin install gt-sdlc
/plugin install skilltest
/plugin install copilot
/plugin install cadre
/plugin install presentations
/plugin install excalidraw
/plugin install docx

Plugins

sdlc

Software development lifecycle automation with slash commands, specialized agents, and GitHub/GitLab webhook watchers.

Commands:

Command	Description
/sdlc:prime	Analyze and understand the codebase
/sdlc:feature [description]	Create a feature specification with deep codebase analysis
/sdlc:bug [description]	Create a bug fix specification
/sdlc:chore [description]	Create a maintenance task specification
/sdlc:implement [spec-file]	Implement a specification with structured task tracking
/sdlc:tdd [description]	Implement using strict Test-Driven Development
/sdlc:branch [spec-file]	Create a git branch from a specification
/sdlc:commit [spec-file]	Commit changes
/sdlc:pull_request [spec-file]	Create a pull request
/sdlc:pr_resolve [PR-number]	Resolve PR review comments in parallel
/sdlc:test_plan [module]	Analyze tests and create test documentation
/sdlc:locate [spec-file]	Locate specification files
/sdlc:install	Install dependencies and run setup scripts

Agents:

Agent	Purpose	Tools
architecture-strategist	Architectural review of code changes, design decisions, component boundaries	Read, Glob, Grep, Bash
performance-oracle	Algorithmic complexity, database queries, memory usage, caching, scalability	Read, Glob, Grep, Bash
pr-comment-resolver	Address PR review comments, implement fixes, post replies, resolve threads	Read, Edit, Write, Glob, Grep, Bash

All agents run on Sonnet for cost-efficient delegation.

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skilltest

Four-layer test framework for validating Claude Code plugin skills remain well-maintained and purposeful.

Command: /skilltest:test-framework

Skill: test-framework — Validates plugin structure, tests trigger accuracy of skill descriptions, runs multi-turn session scenarios, and compares skill value (with vs without).

Testing Layers:

Layer	What it Tests	Speed
L1 Structure	Plugin spec compliance, naming, cross-references	~0.1s
L2 Triggers	Skill description accuracy (precision/recall)	~30s/query
L3 Sessions	Multi-turn routing, context handling, boundaries	2-3 min
L4 Value	Does the skill actually help? (with vs without)	5+ min

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copilot

Create and maintain GitHub Copilot CLI plugins with authoritative spec references and templates.

Command: /copilot:copilot-plugin

Skill: copilot-plugin — Builds Copilot CLI plugin components: skills, agents, prompts, custom instructions, path-specific instructions, AGENTS.md routing, MCP servers, and hooks.

Includes reference specs for all Copilot CLI conventions, comparison matrices, a writing guide, and output templates.

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cadre

Multi-agent team bootstrapper that analyzes your codebase and generates tailored agent teams via AI debate.

Command: /cadre:init

Skill: init — Analyzes project structure, runs an AI debate to determine optimal team composition, and generates .claude/agents/*.md files, config, and routing rules. Handles both existing projects and greenfield bootstrapping.

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presentations

Branded presentation and LinkedIn carousel generation with a brand voice system and reusable slide layouts.

Skills:

Skill	Purpose
pptx-generator	Generate and edit PPTX slides, LinkedIn carousels, and reusable slide layouts
brand-voice-generator	Create tone-of-voice and brand-system files consumed by pptx-generator

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excalidraw

Create .excalidraw diagram JSON files that make visual arguments — workflows, architectures, concepts.

Skill: excalidraw-diagram — Generates Excalidraw JSON with a visual-argument methodology and PNG render pipeline (requires Chromium via Playwright for rendering).

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docx

Comprehensive DOCX document creation, editing, and analysis with tracked changes and comment support.

Skill: docx — Create new documents, modify content, work with tracked changes, add comments, extract text, and handle OOXML validation.

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gt-sdlc