Marketplace
Plugins
Plugins for Haarness: commands, skills, agents, hooks and MCP servers bundled to add in one install.
Design Workflows
Critiques designs, audits accessibility against WCAG, writes UX copy and prepares developer handoff specs.
Data Analysis Toolkit
Writes warehouse SQL, profiles datasets, builds charts and HTML dashboards, and reviews an analysis before you share it.
S&P Global Research
Generates company tear sheets, earnings previews and funding-round digests from S&P Capital IQ data.
Client Meeting Prep
Assembles wealth-advisor briefing packs, client performance reports and investment proposals ahead of client meetings.
LSEG Market Analytics
Prices bonds, swaps and options, studies yield and volatility curves, FX carry and macro data with LSEG analytics.
Fund Administration
Reconciles GL to subledger, traces breaks, builds accruals and roll-forwards, writes flux commentary and ties out NAV.
Math Proof Workbench
Works a hard math problem into a self-contained proof file, either alone in stages or over hours of judge-and-worker subagent rounds.
PR Review Toolkit
Runs a set of focused reviewer agents over your changes, each hunting one kind of problem, from weak tests to swallowed errors.
Terraform MCP
Gives the agent Terraform registry lookups and HCP Terraform or Enterprise workspace tools through HashiCorp's MCP server.
Plugin Development Toolkit
Teaches the agent how plugins fit together and checks the result, so you can ship your own commands, agents and hooks.
Interactive HTML Playgrounds
Makes a one-page interactive tool where you adjust options visually and copy out a prompt describing what you picked.
Playwright Browser MCP
Gives the agent a real browser it can steer, so it can check a web page behaves the way a user would see it.
MCP Server Development
Interviews you about the integration you want, recommends how the MCP server should run, then helps build and package it.
MCP Tunnel Setup
Makes a server inside your private network reachable by Claude without opening inbound ports, using a local container stack.
Explanatory Output Style
Turns each coding session into a lesson by having the agent point out the reasoning behind its choices as it goes.
Linear MCP
Keeps your Linear board in step with the work: the agent can file, find and move tickets as it goes.
Math Olympiad Solver
Attempts olympiad-style problems with several independent solvers and skeptical checkers, and admits it when no proof holds up.
Learning Output Style
Hands you the interesting few-line decisions to code yourself while the agent builds the scaffolding around them.
Laravel Boost MCP
Lets the agent look inside your Laravel app through Artisan, so the code it writes matches the app's real routes and models.
GitLab MCP
Lets the agent act in your GitLab projects, from reviewing merge requests to checking why a pipeline failed.
Hookify Guardrails
Turns 'stop doing that' moments into simple Markdown rules that warn about or block matching commands, edits, prompts or stops.
GitHub MCP
Puts GitHub within the agent's reach so it can file issues, work on pull requests and search code without leaving the chat.
Firebase MCP
Gives the agent hands-on access to your Firebase backend, from database records to deployed functions and hosting.
Feature Development Workflow
Runs a phased feature build: explore the code with agents, ask clarifying questions, compare designs, build after approval, then review.
Context7 Docs Lookup
Answers library questions from fresh docs for the exact version you use, instead of the model's possibly stale memory.
CLAUDE.md Manager
Scores how useful your CLAUDE.md files are and, with your OK, adds the commands and gotchas the session uncovered.
Agent SDK Dev Kit
Scaffolds a new Claude Agent SDK app in TypeScript or Python step by step, then checks the setup with a dedicated verifier agent.
Asana Integration
Walks you through connecting Asana's hosted MCP server with your own OAuth app so tasks and projects can be managed from chat.
Claude Code Setup Advisor
Looks at what your project is built with and picks the one or two agent add-ons per type that would pay off most.
Git Commit Commands
Adds quick commands to write a commit, to commit-push-and-open a pull request, and to prune local branches already gone upstream.
Explain Like I'm Five
Get any concept explained like you are five, as a visual HTML page that is mostly pictures.
PR Code Review
Reviews a GitHub pull request with several parallel subagents, keeps only validated high-signal bugs and rule breaks, and can post them.
HTML Implementation Plan
Review an implementation plan as an interactive HTML page and answer its open questions right on the page.