mutagent

MutagenT Skills

  ███╗   ███╗██╗   ██╗████████╗ █████╗  ██████╗ ███████╗███╗   ██╗████████╗
  ████╗ ████║██║   ██║╚══██╔══╝██╔══██╗██╔════╝ ██╔════╝████╗  ██║╚══██╔══╝
  ██╔████╔██║██║   ██║   ██║   ███████║██║  ███╗█████╗  ██╔██╗ ██║   ██║
  ██║╚██╔╝██║██║   ██║   ██║   ██╔══██║██║   ██║██╔══╝  ██║╚██╗██║   ██║
  ██║ ╚═╝ ██║╚██████╔╝   ██║   ██║  ██║╚██████╔╝███████╗██║ ╚████║   ██║
  ╚═╝     ╚═╝ ╚═════╝    ╚═╝   ╚═╝  ╚═╝ ╚═════╝ ╚══════╝╚═╝  ╚═══╝   ╚═╝
                  ███████╗██╗  ██╗██╗██╗     ██╗     ███████╗
                  ██╔════╝██║ ██╔╝██║██║     ██║     ██╔════╝
                  ███████╗█████╔╝ ██║██║     ██║     ███████╗
                  ╚════██║██╔═██╗ ██║██║     ██║     ╚════██║
                  ███████║██║  ██╗██║███████╗███████╗███████║
                  ╚══════╝╚═╝  ╚═╝╚═╝╚══════╝╚══════╝╚══════╝

Official MutagenT skills for AI coding agents — MutagenT is the platform for optimizing prompts and agents.

---

What is this?

The public marketplace of MutagenT skills for AI coding agents (Claude Code, Cursor, Aider, Continue — anything that consumes the Agent Skills spec). Each skill teaches the agent how to drive one part of the MutagenT platform: prompt optimization, evaluation, dataset curation, observability, and agent design.

The repository serves two compatible formats from a single source of truth:

• Claude Code plugin marketplace — /plugin marketplace add installs the whole catalog; /plugin install <plugin>@mutagent-io installs one plugin.
• Bare Agent Skills — every skill lives at skills/<name>/SKILL.md and is consumable by any registry, crawler, or runtime that reads the open spec.

---

Skill Index

The marketplace ships one bundled plugin (mutagent) that contains every skill. Releases are tagged at the plugin level: mutagent/v0.1.178.

Skill	Status	Path	Description
mutagent-cli	✅ Stable	skills/mutagent-cli/	Prompt upload, dataset curation, evaluation rubric creation, optimization, and framework tracing via @mutagent/cli.
agent-builder	🚧 Coming soon	skills/agent-builder/	Multi-turn agent design, evaluation, and optimization workflows.

Status legend: ✅ Stable · 🟡 Beta · 🚧 Coming soon · ⚠️ Deprecated

---

Install

Recommended — via Claude Code marketplace

# Inside Claude Code
/plugin marketplace add mutagent-io/skills
/plugin install mutagent@mutagent-io

That's it. Claude Code reads .claude-plugin/marketplace.json from this repo and caches the bundled mutagent plugin under ~/.claude/plugins/cache/. Every skill inside (mutagent-cli, etc.) is auto-invoked when the agent detects matching trigger phrases (e.g. "optimize this prompt", "add tracing"). Skill namespace: /mutagent:mutagent-cli.

Alternative — via the MutagenT CLI

# Install the CLI (one of)
bun add -g @mutagent/cli
pnpm add -g @mutagent/cli
yarn global add @mutagent/cli
npm install -g @mutagent/cli

# Authenticate
mutagent login --browser

# Install the bundled skill into your project's .claude/skills/
mutagent skills install

mutagent skills install writes .claude/skills/mutagent-cli/ into your project root. Useful if you already use the MutagenT CLI and don't want to involve Claude Code's plugin manager.

Pinned tarball (per-version, no clone)

Each tagged release ships a tarball as a release asset (contains .claude-plugin/, skills/, LICENSE, README.md):

VERSION=0.1.178
curl -L "https://github.com/mutagent-io/skills/releases/download/mutagent/v${VERSION}/mutagent-v${VERSION}.tar.gz" \
  | tar -xz -C ./my-skills-snapshot

Clone or submodule

# Clone the whole repo
git clone https://github.com/mutagent-io/skills

# Or as a submodule
git submodule add https://github.com/mutagent-io/skills .claude/skills/mutagent