Create or improve an agent skill (SKILL.md) with SkillsCake. Point it at a skill folder, or describe a workflow you just finished; it sends the input to the SkillsCake API and writes a finished skill back. Built for prompt engineers and skill builders who want skills that actually trigger and run well.

This repo is the public client; the upgrade engine stays a hosted service. The skill follows the open Agent Skills standard, so it runs natively in Claude Code, Codex, and other agents.

Any host (the skill itself): copy skills/skillscake/ into your agent's skills directory or run npx skills add skillscake/use-skillscake.

Claude Code plugin: /plugin marketplace add skillscake/use-skillscake, then /plugin install skillscake@skillscake, then /reload-plugins to activate it.

Codex plugin: CLI codex plugin marketplace add skillscake/use-skillscake, then enable it from /plugins, then restart Codex to load the skill.

Copilot CLI plugin: /plugin marketplace add skillscake/use-skillscake, then /plugin install skillscake@skillscake, then restart Copilot to load the skill.

Needs bash, curl, zip, and unzip (standard on macOS and Linux).

Create an API key at https://skillscake.com/account and export it:

export SKILLSCAKE_API_KEY="skc_live_..."

A key runs skills only.

Ask your agent to "use SkillsCake" to upgrade a skill, or to turn a finished workflow into one. It checks your runs, sanitizes and sends the input, and applies the result — with as few questions as possible.

skills/skillscake/ the host-agnostic skill (SKILL.md + scripts)
plugins/ Claude Code, Codex, and Copilot plugin wrappers (symlink the skill)
.claude-plugin/, .agents/, .github/plugin/ marketplace manifests

Apache License 2.0. Use, modify, and redistribute freely. This client is open source; the upgrade engine and API stay a hosted service, and your use of the API is governed by the SkillsCake terms.