The JapanFold skill

Prefer to fold and design straight from your AI agent instead of writing HTTP calls? Install the JapanFold skill: a single SKILL.md built on the open Agent Skills standard. It teaches your agent the API so you can just ask, in plain language, to fold or design.

Install

One line installs it into any compatible harness (Claude Code, Cursor, Codex, Gemini CLI, Cline, Windsurf, Copilot, Amp, and more):

npx skills add moritztng/japanfold          # this project
npx skills add moritztng/japanfold -g       # global: every project / new chat

• Target specific agents: -a claude-code, -a cursor, -a codex, -a '*' (all).
• No installer? It's just a file. Drop SKILL.md into your agent's skills directory (e.g. ~/.claude/skills/japanfold/SKILL.md).

Claude Code plugin marketplace

Install it as a managed plugin (auto-updates via /plugin marketplace update):

claude plugin marketplace add moritztng/japanfold
claude plugin install japanfold@japanfold

Restart Claude Code, then just ask it to fold or design.

Claude Science

Manage skills in-app, no installer. Customize → Skills, add from the repo (or paste SKILL.md), and publish. If egress is sandboxed, approve the host api.japanfold.com.

Use

Once installed, ask in plain language:

"Fold this sequence with Boltz-2 and report the confidence: MKTAYIAK…"

"Co-fold this protein with aspirin and estimate the binding affinity."

"Design 10 nanobody binders against this target."

Or invoke it explicitly where supported: /japanfold.

The API is public and self-describing, so you can also skip the skill entirely and just tell your agent: "use the JapanFold API at api.japanfold.com to fold …".