npms-io

Claude Code Skills Marketplace

This is a Claude Code Marketplace repository: used to distribute plugins that extend Claude Code with skills, slash commands, hooks, custom agents, and protocol servers (MCP, LSP).

How marketplaces work:

1. Add a marketplace to your Claude Code installation (one-time setup)
2. Claude Code reads the marketplace catalog to discover available plugins
3. Install individual plugins selectively
4. Receive automatic updates when plugin versions change

Quick Start

1. Add this marketplace

/plugin marketplace add Mearman/marketplace

2. Install a plugin from the list below

For example, to install the Wayback Machine Archive plugin:

/plugin install wayback@mearman

3. Use the skill

Ask: "Check if example.com is archived in the Wayback Machine"

Available Plugins

bib — v0.2.1

Bibliography manipulation plugin supporting BibTeX, BibLaTeX, RIS, EndNote XML, and CSL JSON formats: Convert, validate, merge, filter, and perform CRUD operations on bibliography files.

Components: 9 skills

/plugin install bib@mearman

cve-search — v0.3.0

CVE Search: Tools for searching vulnerabilities by CVE ID, product name, or vendor, with detailed vulnerability information and dependency auditing

Components: 2 skills

/plugin install cve-search@mearman

github-api — v0.2.0

GitHub REST API: Tools for repository metadata, READMEs, user profiles, and rate limit checking

Components: 4 skills

/plugin install github-api@mearman

gravatar — v0.2.1

Gravatar Avatar URLs: Tools for generating avatar URLs from email addresses

Components: 3 skills

/plugin install gravatar@mearman

json-lsp — v0.2.0

JSON Language Server: Provides validation, completion, hover, document symbols, and formatting for JSON and JSONC files with automatic schema association support

Components: LSP

/plugin install json-lsp@mearman

json-schema — v0.2.0

JSON Schema Validation: Tools for validating JSON schemas themselves, validating JSON files against schemas, and auto-validating files against their $schema reference

Components: 3 skills

/plugin install json-schema@mearman

json-tools — v0.2.0

json-toolsJSON file manipulation toolkit with query, transform, edit, validate, and format capabilities using TypeScript

Components: 1 skill, 6 commands, MCP

/plugin install json-tools@mearman

npm-registry — v0.2.0

npm Registry: Tools for searching packages, getting metadata, checking existence, and fetching download statistics

Components: 4 skills

/plugin install npm-registry@mearman

npms-io — v0.2.0

NPMS Package Analysis: Tools for package quality analysis, comparison, and name suggestions

Components: 3 skills

/plugin install npms-io@mearman

pypi-json — v0.2.3

PyPI JSON API: Tools for querying Python package metadata, release information, and statistics from the Python Package Index

Components: 1 skill

/plugin install pypi-json@mearman

tex — v0.2.1

texLaTeX manipulation, generation, and conversion tools

Components: 6 skills

/plugin install tex@mearman

wayback — v0.10.2

Wayback Machine Archive: Tools for checking, submitting, listing, screenshotting, and cache management for archived URLs

Components: 9 skills

/plugin install wayback@mearman

Managing Plugins

Marketplace Commands

Update all marketplaces

/plugin marketplace update

Update this marketplace specifically

/plugin marketplace update mearman

Remove this marketplace

/plugin marketplace remove mearman

Plugin Commands

Update a specific plugin

/plugin update wayback@mearman

Shorthand (assumes @mearman)

/plugin update wayback

Update all installed plugins

/plugin update

Remove a plugin

/plugin uninstall wayback@mearman