Stack Registry№ index of agent tools
040
Skill pack · Agent skills

Hallmark

Anti-AI-slop design skill for Claude Code, Cursor, and Codex.

Checked 2026-11-07

Install

skills CLI (all projects)
npx skills add nutlope/hallmark -g
skills CLI (one harness only)
npx skills add nutlope/hallmark -g --agent claude-code
Claude Code (plugin)
/plugin marketplace add nutlope/hallmark
/plugin install hallmark@hallmark

Replace placeholder paths and keys with your own. Never paste real secrets into shared configs.

Verification note

Install commands copied verbatim from the official README on 2026-11-07. Not run by Stack Registry.

Repo
Nutlope/hallmark
Maintainer
Nutlope
Stars
★ 50k
Commit
2026-11-05
License
MIT
Auth
No auth
Tags
designfrontendskillslint

The Weekly Index · free
New and updated MCP servers like this one, once a week.

Subscribe to the weekly newsletter
For makers

Is this your tool?

Get it featured or fast-tracked. Paid placements are always labelled.

Fast-track review

$59 one-time

Get fast-track reviewAlso on Gumroad
Featured listing

$149 / month

Get featured listingAlso on Gumroad ($149/month membership)
Weekly sponsor

$99 / week

Get weekly sponsorAlso on Gumroad (one-time, 1 week)

See the full rate card · Request a correction

Same drawer: Agent skills

SR-046Matt Pocock's SkillsSmall, composable agent skills for real engineering work, straight from Matt Pocock's .agents directory. Works with any model; installs as a Claude Code or Copilot plugin, Gemini skills, or via npx skills.Agent skillsNo auth★ 310kSR-082SuperpowersAgentic skills framework and development methodology for coding agents: brainstorming, planning, TDD and subagent-driven development as installable skills.Agent skillsNo auth★ 309kSR-006Anthropic Agent SkillsPublic repository for Agent SkillsAgent skillsNo auth★ 185kSR-003Agent Skills (Addy Osmani)25 production-grade engineering workflow skills for AI coding agents: spec, build, test, review and ship. Installs into 70+ agents via the skills CLI.Agent skillsNo auth★ 117k