Purpose
This project is a multi-harness agent plugin marketplace for sharing the same set of plugins, agents, skills, and commands across multiple AI coding tools. Here, "harness" refers to the programming tools that load and run these components. Supported tools include Claude Code, OpenAI Codex CLI, Cursor, OpenCode, Antigravity CLI, GitHub Copilot, and Pi.
Main Capabilities
The catalog contains 94 plugins, of which 92 are local plugins and 2 are external entries. The local source includes 202 agents, 184 skills, and 105 commands. Plugins are organized by type of work, covering Python and JavaScript development, code review, testing, infrastructure, security, and more. For example, the python-development plugin contains three agents, sixteen skills, and one scaffolding command. Components share the same Markdown source, and installation methods and capabilities are adapted for each tool.
Usage
Different tools correspond to different installation paths:
- Claude Code: Run commands within Claude Code to register the marketplace and install the Python development plugin, then have Claude use the Python agent, or run the plugin's scaffolding command.
- Codex CLI: Use the current version of Codex CLI to run commands in the terminal. The native Codex manifest exposes source skills; generated TOML agents and command-derived skills use a separate adapter path. Native installation reads the original skill body, while generated copies split oversized bodies into reference files to meet the 8 KB budget.
- Cursor: Use the committed plugin marketplace registry, add the marketplace according to the Cursor setup instructions, and install plugins.
- Installing skills separately: You can use the GitHub CLI's gh skill command or the npx skills installer, choose a programming tool, and then install. Both read skills from GitHub without cloning the repository, and do not install the plugin's agents, commands, or hooks. gh skill requires GitHub CLI 2.90 or later; the npx command requires Node.js and npm.
- Installing from a clone: OpenCode, Antigravity CLI, GitHub Copilot, and Pi require cloning the repository and using the corresponding tool's installer. You need to install uv, Python 3.12 or later, and the target programming tool. Each target generates artifacts and links all local plugins into that tool's user configuration. Pi's agents require its reference subagent extension or a compatible extension.
Suitable Scenarios
Suitable for developers who reuse the same set of agents, skills, and commands across multiple AI coding tools, especially teams that need common engineering tasks such as Python/JavaScript development, code review, testing, infrastructure, and security.
Limitations and Notes
The counts of agents, skills, and commands cover only local source files; external plugins provide their own components and installation requirements. Source agents specify model aliases (such as opus, sonnet, haiku, fable, or inherit), and adapters map these aliases to each tool's model settings, with some inherit entries using fixed defaults. The repository validates plugin structure, generated artifacts, and documentation, and plugin-eval also provides static skill checks that do not require model calls; the LLM judging and Monte Carlo layers are experimental and have not been validated against human annotations, and their scores only describe model evaluations and repeated simulations, cannot prove that tasks succeed in a project, and require the optional llm dependency. Model calls use ANTHROPIC_API_KEY when it is set and are billed to that API account; otherwise, they use the Claude Code login. The repository uses the MIT license, and external plugins have their own licenses. Pensyve is an optional external Claude Code marketplace entry maintained by Major7 Apps, and its open-source runtime can run locally or on your own server; Pensyve Cloud was shut down on October 1, 2026, and its dashboard, API, and hosted MCP endpoints are unavailable.
