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harness-alchemist

v0.2.0-alpha.1

by lunarmoon26 · author: Haochuan Zhang

Scaffold, validate, and publish portable coding-agent plugins across Claude Code, Codex, OpenCode, Antigravity, and DeepSeek Harness.

What harness-alchemist does, in the publisher's words

The universal scaffold for coding-agent plugins. One repository, five harnesses, skills that own their runtime.

Follow @haochuanzero on X for updates · Start from the one-page tour.

Harness Alchemist scaffolds one TypeScript plugin repository that installs natively into Claude Code, Codex/ChatGPT, OpenCode, Google Antigravity, and DeepSeek Harness/Cordis. Each product skill declares its fixed executable and portable tool schema in skill-runtime.json; host entrypoints delegate through @lunarmoon26/agent-skill-runtime.

From the project README, punctuation lightly normalized · Open the README on GitHub

Skills
1
MCP servers
1
Stars
0
License
MIT
Repo created
2026-08-23
Last pushed
2026-09-27
Publisher type
User
Version
0.2.0-alpha.1

Links

Skills · 1

harness-alchemist
Use the Harness Alchemist CLI to create or validate universal coding-agent plugins for Claude Code, Codex/ChatGPT, OpenCode, Google Antigravity, and DeepSeek Harness/Cordis.

Descriptions come from the frontmatter of each SKILL.md, punctuation lightly normalized.

MCP servers · 1

harness-alchemiststdio
npx -y @lunarmoon26/agent-skill-runtime@0.1.1 mcp --root ${PLUGIN_ROOT} --manifest skills/harness-alchemist/skill-runtime.json

Read from the plugin's own mcp.json. We list environment variable names, never values.

Category

Other. Assigned by this directory. Agent Plugins 1.0.0 has no category field, so no manifest declares one.

Keywords

agent-skill · scaffolding · mcp · opencode · deepseek

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