Agentic Plugin Marketplace

Production-ready agentic workflow building blocks: 92 plugins, 202 agents, 181 skills, 105 commands — built for Claude Code and consumed natively by OpenAI Codex CLI, Cursor, OpenCode, the Antigravity CLI, and GitHub Copilot from a single Markdown source.

[!NOTE] One source-of-truth (plugins/), five harnesses. Each harness gets idiomatic, harness-native artifacts — not lowest-common-denominator translations. See docs/harnesses.md for the capability matrix.

Quick start

Pick your harness:

Claude Code

/plugin marketplace add wshobson/agents
/plugin install python-development          # or any of 92 plugins

→ Full Claude Code setup, troubleshooting, and plugin catalog

Codex CLI · Cursor · OpenCode · Antigravity CLI · Copilot

Codex and Cursor install natively from the committed registries (which point at the source plugins/):

npx codex-marketplace add wshobson/agents        # Codex; then install individual plugins
# Cursor: add the marketplace, then `/plugin install <name>` (reads .cursor-plugin/ + source)

Antigravity and OpenCode install via clone + generate (the transformed trees are gitignored):

gh repo clone wshobson/agents ~/agents && cd ~/agents
make generate HARNESS=antigravity && make install-antigravity  # Antigravity (agy)
make install-opencode                                          # OpenCode (runs generate + symlinks)

Setup details and per-harness gotchas: docs/harnesses.md.

What's inside

Count What it is

Plugins 92 Granular, single-purpose installable units (91 local + 1 external via git-subdir)

Agents 202 Domain experts (architecture, languages, infra, security, data, ML, docs, business, SEO)

Skills 181 Modular knowledge packages with progressive disclosure (load when activated)

Commands 105 Slash commands: scaffolding, security scans, test gen, infrastructure setup

Orchestrators 16 Multi-agent coordination workflows (full-stack, security, ML, incident response)

Browse the catalog: docs/plugins.md · docs/agents.md · docs/agent-skills.md

How it works

Each plugin is isolated and composable: agents, commands, and skills are auto-discovered from directory structure. Installing a plugin loads only its components into context — not the whole marketplace.

plugins/python-development/
├── .claude-plugin/plugin.json
├── agents/             # 3 Python agents (python-pro, django-pro, fastapi-pro)
├── commands/           # 1 scaffolding command
└── skills/             # 16 specialized skills (async, testing, packaging, …)

Tiered model strategy:

Tier Model Use

0 Fable 5 Longest-horizon autonomous work — large migrations, multi-hour runs (opt-in, premium cost)

1 Opus Architecture, security, code review, production-critical

2 inherit User-chosen — backend, frontend, AI/ML, specialized

3 Sonnet Docs, testing, debugging, API references

4 Haiku Fast operational tasks, SEO, deployment, content

→ Model configuration details

Multi-harness support

This marketplace ships to five agentic harnesses from one Markdown source. Each adapter emits harness-native artifacts (not lowest-common-denominator translations):

Harness Generates Notes

Claude Code (source-of-truth) Native marketplace.json + plugins/

Codex CLI .agents/plugins/marketplace.json + plugins/*/.codex-plugin/plugin.json (committed); .codex/skills/, .codex/agents/ (gitignored) 8 KB skill cap respected; commands → skills

Cursor .cursor-plugin/, .cursor/rules/ Thin marketplace + curated rules; reuses .claude/

OpenCode .opencode/agents/, .opencode/commands/, .opencode/skills/ permission: block from tools: allowlist; OpenCode-safe skill names

Antigravity CLI .antigravity/plugins/<p>/{skills/,agents/,commands/} Self-contained agy plugin per source plugin; model tier alias (inherit/flash/pro)

Copilot .copilot/agents/, .copilot/skills/, .copilot/commands/ Markdown agent profiles + SKILL.md skills + commands-as-skills; model maps to native Claude models

make generate-all                        # all five
make validate                            # structural checks
make garden                              # drift / dead-link / cap detection

Codex and Cursor install from source via committed registries; Antigravity and OpenCode install via clone + make.

→ Full capability matrix and per-harness deep-dives

Quality evaluation

plugin-eval is a three-layer evaluation framework for measuring and certifying plugin/skill quality:

• Static — deterministic structural analysis (<2s, free)

• LLM Judge — semantic evaluation across 4 dimensions (~30s, Haiku + Sonnet)

• Monte Carlo — statistical reliability via 50-100 simulated runs (~2-5 min)

uv run plugin-eval score path/to/skill --depth quick
uv run plugin-eval certify path/to/skill

→ PluginEval framework documentation

Documentation map

Detail lives in docs/. Read in this order:

• docs/plugins.md — full catalog of all 92 plugins

• docs/agents.md — all 202 agents by category

• docs/agent-skills.md — 181 skills with progressive disclosure

• docs/usage.md — commands, workflows, examples

• docs/architecture.md — design principles

• docs/harnesses.md — cross-harness capability matrix

• docs/authoring.md — portable-content style guide

• docs/plugin-eval.md — quality evaluation framework

• docs/round-trip-results.md — real-CLI verification recipes

Harness setup, capability deltas, and gotchas live in docs/harnesses.md.

Contributing: CONTRIBUTING.md · Authoring: docs/authoring.md

External Memory Integration

Pensyve is included as an external git-subdir entry for Claude Code. Pensyve also maintains direct upstream integrations for Codex CLI, Cursor, OpenCode, and Copilot (not yet Antigravity CLI).

Harness Pensyve integration

Claude Code /plugin install pensyve from this marketplace (integrations/claude-code)

Codex CLI integrations/codex-plugin

Cursor integrations/cursor

OpenCode integrations/opencode-plugin

Copilot .copilot/ in repo root or ~/.copilot/ via make install-copilot

License

MIT — see LICENSE.

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