Development plugins

Claude Code and Codex plugins their authors filed under "development". All categories.

libpetri

claude

Design principles for building provable Coloured Time Petri Nets with libpetri: token-carried data flow, reusable subnets, correlated fork/join, and proofs from the first commit.

1 skill

debe/libpetri 28

panoply

claude

An arsenal of slash commands and MCP servers for AI agents — written once, compiled to Claude Code, opencode, and Cursor.

5 skills · 17 commands · 2 agents · 3 MCP servers

fordaaaa/panoply 27

core

claude

Essential development skills: Git, TDD, code review, gitleaks secret scanning, documentation, technical English, restraint, anti-fabrication, twelve-factor apps, the agent loop, bees issue tracking, mise, nushell, and Apple Container

14 skills · 5 commands · 5 agents · hooks

vinnie357/claude-skills 27

ServiceNow MCP server for Claude Code, GitHub Copilot, Codex and any MCP client: Table API, CMDB, schema, aggregates and update sets, plus four Agent Skills. Read-only mode, OAuth client credentials for headless use, audit log.

4 skills · 1 MCP server

jschuller/mcp-server-servicenow 27

r-lsp

claude

R language server for Claude Code, providing code intelligence for R, R Markdown, and Quarto files. Requires the languageserver R package.

LSP

christopherkenny/skills 27

Tiered Salesforce library: 12 router skills up front, 1,040 grounded Salesforce skill packages, 70 run-time agents and 94 slash commands reached on demand.

200 skills · 94 commands · 70 agents

PranavNagrecha/AwesomeSalesforceSkills 26

workflows

claude

One loop — work — for code, data, writing and workshop presentations: an approved plan as the run's only authority, delegated implementation, independent verification against computed gates, and human review

91 skills · hooks

edwinhu/workflows 26

game-dev

claude

Complete game development plugin — 25 skills, 7 commands, 3 agents, 5 hooks. Genre-agnostic patterns for any game type.

25 skills · 7 commands · 3 agents · 3 MCP servers · hooks

fcsouza/agent-skills 26

Game design skills — core loops, economy, levels, procedural generation, quests, skill trees, and UI/UX patterns.

39 skills

fcsouza/agent-skills 26

Game engineering skills — backend architecture, state sync, auth, payments, analytics, matchmaking, Redis, BullMQ, and audio.

39 skills

fcsouza/agent-skills 26

Skills for writing, porting, and operating ReactantNitro experiments: the hook contract, the three field markers, metrics, optimizers, recompilation, checkpoints, manual training, device boundaries, visualization, export, and Kaimon-driven runs.

11 skills

EnzymeAD/ReactantNitro.jl 25

fabrik

claude

Ambient awareness of Fabrik for the human's interactive Claude Code session. Turns Claude into a product-management buddy and supervisor for projects that use Fabrik to automate issue processing through a configurable SDLC pipeline (Specify, Research, Plan, Implement, Review, Validate).

2 skills · 1 command · 1 MCP server · hooks

handarbeit/fabrik 25

octen

claude

Real-time web search, news with storyline clustering, company and person profiles, local place lookup, fast destination lookup, broad multi-angle research, URL extraction and image search through Octen's hosted MCP server, plus video search in invite-only Beta. Authorizes over OAuth on first use — nothing to install and no API key to paste.

2 skills · 1 MCP server

Octen-Team/octen-mcp 25

Evaluates a repository's readiness for AI coding agents and produces an evidence-based scorecard. Also audits how much agent run time goes to slow tool calls.

2 skills

exadel-inc/agentic-readiness-assessment 25

cli-style

claude

Authoritative CLI and Agent-Experience (AX) design system by Steve Francia (spf13), creator of Cobra, Viper, and Hugo. Enforces the 56 principles of CLI Style across Grammar, Convention, Outcome, Legibility, Output, Interaction, Failure, Time, Distribution, and Trust.

1 skill

spf13/cli-style 25

Intelligent orchestration platform for AI coding tools — 47 MCP tools (orchestrate, consensus voting, research, pipelines), 34 skills, 12 expert agents, governance hooks.

34 skills · 12 agents

nexus-substrate/nexus-agents 24

cstk

claude

Full SDD pipeline (briefing -> review-features), autonomous 00c orchestrators with persistent state, bounded decisions and measured cost, and enforced guard hooks

23 skills · 7 commands · 7 agents · 1 MCP server · hooks

JotJunior/cstk 24

Complete development toolkit — UX testing, multi-agent coordination, TDD workflow, GitHub templates, research spikes, and repo scaffolding. Provides 20 coordinator agents (issue-groomer, issue-implementer, coordinator, worker, reviewer, planner, and more) plus 15 skills for browser and native UX testing, UX flow critique, visual design critique, research spikes, TDD enforcement, and repo scaffolding.

17 skills · 20 agents

dennisonbertram/developer-skill-pack 24

Pragma

claude

Deterministic linting hooks, semantic code validators, and a multi-LLM advisory council. Enforces coding rules mechanically — not by suggestion.

12 skills · 2 agents

peteski22/agent-pragma 24

Go language profile: Go-specific skills and hooks for the cstk toolkit

7 skills

JotJunior/cstk 24

cstk-jira

claude

Jira Cloud integration for the cstk toolkit: converts a documented feature (spec + tasks.md) into Epic > Task > Sub-task in Jira, keeps a dedicated board per target project and syncs status during autonomous feature-00c/agente-00c executions

3 skills · hooks

JotJunior/cstk 24

Astral

codex

Repo-local Codex adapter for Astral's official Python tool skills.

3 skills

smorinlabs/py-launch-blueprint 24

Looks up curated web security learning resources (XSS, SQLi, CSRF, SSRF, OAuth/JWT, recon, evasion, tools, CTF). Filters by topic, difficulty, language, and resource type. Returns top references with archive fallbacks. Defensive use only; refuses unauthorized targeting.

1 skill

Correia-jpv/fucking-awesome-web-security 24

gabbe

claude

GABBE core: 44 agent skills for the everyday engineering loop — spec, plan, TDD, review, research, security, memory and audit, with Brain and Loki mode. Add the gabbe-* topic plugins from the same marketplace for the rest of the 214.

44 skills

andreibesleaga/GABBE 23

gabbe-ops

claude

GABBE ops skills (30): operations: deployment, environments, observability, incidents, performance, cost and release management.

30 skills

andreibesleaga/GABBE 23

GABBE architecture skills (29): software architecture: patterns, C4 and diagrams, domain models, event-driven and microservice design, governance, migration and scalability.

29 skills

andreibesleaga/GABBE 23

jev

claude

Cheap, fast, typed AI judgments inside Claude Code via the jevctl CLI: verify claims against evidence, screen fetched text or screenshots for prompt injection, rank candidates by meaning, locate things in images, and ask yes/no, multiple-choice, rating, or where-is-it questions.

1 skill · 9 commands

Nasrallah-AL/jev-cli 23

frontend

claude

Frontend platform discipline: CSS, Tailwind CSS v4, accessibility, UI design decisions, and browser-specific practices

7 skills

xobotyi/cc-foundry 23

grafana

claude

Grafana observability platform: dashboards, query languages (PromQL, MetricsQL, LogsQL), alerting, provisioning, and data visualization discipline

7 skills

xobotyi/cc-foundry 23

JavaScript and TypeScript discipline: the language, the type system, the Node and Bun runtimes, Vitest, and LSP-powered code intelligence

5 skills · LSP

xobotyi/cc-foundry 23