---
name: multi-provider-plugins-52d92a10721e
description: Use when making a Claude Code plugin compatible with other AI coding assistants (Codex, OpenCode, Cursor, Gemini CLI), designing multi-provider plugin architecture, adding a provider adapter, or structuring a portable shared skills library
metadata:
  last_updated: "2026-06-04"
---

# Multi-Provider Plugins

Route to the reference that matches your task.

## Task → Reference

| Task | Read |
|------|------|
| Understand the shared-skills + thin-adapter architecture | `references/architecture-overview.md` |
| Add or configure a provider-specific adapter (Claude Code, Codex, OpenCode, Cursor, Gemini) | `references/provider-adapters.md` |
| Map tool names across providers in skill content | `references/tool-mapping.md` |
| Implement session-start bootstrap injection for a provider | `references/bootstrap-patterns.md` |
| Structure or audit a portable shared skills library | `references/shared-skills-library.md` |

## Instruction File Conventions (CLAUDE.md / AGENTS.md)

**Non-obvious and commonly wrong** — apply whenever creating a new project or touching either file:

- **Claude Code** reads `CLAUDE.md`. Supports `@filename` import syntax (e.g. `@AGENTS.md` inlines it).
- **Codex CLI** reads `AGENTS.md` as plain Markdown — **no `@import` or include syntax exists**. `@CLAUDE.md` in AGENTS.md is a broken line, not an import.
- **Best pattern:** Write everything in `AGENTS.md`. Make `CLAUDE.md` contain only `@AGENTS.md`. All tools read AGENTS.md directly; Claude Code imports it inline via the `@` syntax.
- **Codex plugins:** `codex plugin marketplace add/upgrade/remove` only — no `install` subcommand.

## Universal Principles

1. **One `skills/` directory, many adapters.** Skills live once; provider adapters point to them. Never duplicate skill content per provider.

2. **Adapters are thin.** A provider adapter does the minimum: declare the plugin, point at `skills/`, and inject a bootstrap if the provider needs it. No business logic in adapters.

3. **Skills are portable markdown.** SKILL.md frontmatter format is identical across providers. Use clearly-labeled `### Claude Code` / `### Codex` subsections within skill bodies when tool names differ — don't branch in frontmatter.

4. **Bootstrap injection is a last resort.** Claude Code discovers skills natively. Only write bootstrap code when a provider lacks native skill discovery.

5. **Reference implementation.** [obra/superpowers](https://github.com/obra/superpowers) is the canonical example of this architecture running across Claude Code, Codex, OpenCode, Cursor, and Gemini CLI.


---
Source attribution: joeblackwaslike
Original project: https://github.com/joeblackwaslike/agent-skills/blob/5ee9024524879d0fa619846a5a1e092964561dcf/skills/multi-provider-plugins/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 Joe Black

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: joeblackwaslike
Original project: https://github.com/joeblackwaslike/agent-skills/blob/5ee9024524879d0fa619846a5a1e092964561dcf/skills/multi-provider-plugins/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Product Management
Roles: Backend Developer, DevOps / SRE, ML / AI Engineer, Product Manager, Technical Product Manager
Specialties: Design, Git
Tools: OpenAI API
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: b2e21d2dd15497359a3f356ba84c0563e04c40411811b3ba4a8d217811989172