Catalog
Every x402, MPP, MCP, and skill listing we've indexed, normalized, and enriched.
HTTPie CLI API Testing and Debugging Client
HTTPie is a modern, user-friendly command-line HTTP client designed for testing, debugging, and interacting with APIs and HTTP servers. It provides an intuitive syntax with formatted and colorized terminal output, built-in JSON support, and session persistence.
htmlq Command-Line HTML Content Extractor with CSS Selectors
htmlq is a command-line tool for extracting content from HTML using CSS selectors, functioning as the HTML equivalent of jq. Written in Rust, it lets you pipe HTML through CSS selectors to extract text, attributes, and structured content directly from the terminal.
Howler.js Cross-Browser JavaScript Audio Library
Howler.js is a JavaScript audio library for the modern web that defaults to the Web Audio API with an HTML5 Audio fallback. With nearly 25,000 GitHub stars and 580,000 weekly npm downloads, it provides a single reliable API for audio playback, spatial sound, sprites, and streamin
Horcrux Shamir Secret Sharing File Encryption and Splitting Tool
Horcrux splits files into encrypted fragments using Shamir Secret Sharing, so you can distribute pieces across locations and reconstruct the original with a configurable threshold — no password required.
Hoppscotch Open Source API Development Ecosystem
Hoppscotch is a lightweight, open-source API development platform that serves as an alternative to Postman and Insomnia. It supports REST, GraphQL, WebSocket, SSE, MQTT, and Socket.IO protocols with a fast, browser-based interface available as PWA, desktop app, and CLI.
Hookdeck CLI for Webhook Development and Event Debugging
Hookdeck CLI is Hookdeck's official command-line tool for forwarding webhooks to localhost, managing event gateway resources, and running an MCP server for agent workflows. It is useful when you need repeatable webhook testing, local event inspection, and a bridge between webhook
Hono Ultrafast Web Framework Built on Web Standards
Hono is a small, simple, and ultrafast web framework built on Web Standards. It runs on any JavaScript runtime including Cloudflare Workers, Deno, Bun, Vercel, AWS Lambda, and Node.js, making it ideal for building portable edge-first APIs and web applications.
Himalaya CLI Email Client for IMAP SMTP and Notmuch
Himalaya is a CLI email client written in Rust that supports IMAP, Maildir, and Notmuch backends for reading mail, and SMTP and Sendmail for sending. It features multi-account configuration, PGP encryption, OAuth 2.0, system keyring integration, and JSON output for scripting and
Highlight.io Open Source Full-Stack Monitoring Platform
Highlight.io is an open-source full-stack monitoring platform combining session replay, error monitoring, logging, and distributed tracing in a single cohesive tool. Self-hostable via Docker, it provides complete application observability for frontend and backend.
Hemingway Readability Analyzer API
Scores content readability using textstat library metrics (Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau). Highlights complex sentences, passive voice via spaCy dependency parsing, and adverb density.
Helm Chart Templater
Generates and validates Kubernetes Helm charts using helm template and helm lint APIs. Supports values schema generation via json-schema-generator and chart dependency resolution with helm dependency update.
Helm Chart Template Scaffolder
Scaffolds Helm 3 chart templates with Go templating best practices. Uses helm-unittest for test generation and Polaris for Kubernetes resource validation scoring.
Helm Chart Diff & Upgrade Manager
Uses helm-diff to compute a human-readable diff between deployed and candidate chart versions before upgrade. Automatically bumps image tags by querying the OCI registry, then executes helm upgrade --atomic with configurable rollback timeouts. Sends upgrade status to PagerDuty or
Helm Chart Boilerplate Builder
Scaffolds Kubernetes Helm charts with values.yaml templating, ingress configuration, and HPA definitions. Uses helm-unittest for test generation and Chart Testing (ct) lint integration.
Helix Post-Modern Modal Text Editor with LSP and Tree-sitter
Helix is a post-modern terminal-based modal text editor written in Rust. It features built-in language server protocol (LSP) support, smart syntax highlighting and code editing via Tree-sitter, and a Kakoune-inspired editing model with multiple selections.
Heisenberg Supply Chain Health Checker
An open-source software supply chain health check tool that analyzes dependencies using deps.dev, SBOMs, and external advisories. Heisenberg generates health scores, detects risky packages, and produces CSV reports for individual dependencies or entire GitHub organization portfol
Healthchecks.io Cron Job Monitoring and Alerting Platform
Healthchecks.io is an open-source cron and background task monitoring platform that alerts when scheduled jobs fail to ping on time. It gives teams a dashboard, API, and notification integrations for tracking recurring jobs without building their own heartbeat system.
HeadstartWP Headless WordPress and Next.js Framework
HeadstartWP is 10up's open-source framework for building headless WordPress sites with Next.js. It combines a WordPress plugin, JavaScript packages, and documented patterns for routing, previews, content fetching, SEO, and multilingual delivery so an agent can scaffold or extend
Headless CMS GraphQL Connector
Connects headless CMS backends (WordPress WPGraphQL, Strapi, Contentful) to frontend frameworks using Apollo Client and urql. Handles content previews, ISR cache invalidation, and webhook-driven rebuilds.
Hasura GraphQL Engine for Instant API and Database Automation
Hasura turns Postgres and other supported data sources into a production-ready GraphQL API with realtime subscriptions, event triggers, and role-based permissions. This skill is useful when an agent needs to inspect schemas, expose structured data safely, or automate backend work
HashiCorp Vault Secrets Rotation Agent
Automates secret rotation in HashiCorp Vault using the Vault API and dynamic secrets engines. Manages database credential leases, PKI certificate renewal, and AWS STS token generation with TTL policies.
HashiCorp Vault Secret Scanner
Scans codebases for hardcoded secrets using HashiCorp Vault SDK and truffleHog patterns. Integrates with Vault Transit engine for automatic secret rotation and re-encryption of detected credentials.
HashiCorp Vault Secret Rotation Agent
Connects to HashiCorp Vault HTTP API for automated secret rotation workflows. Manages dynamic database credentials via Vault database secrets engine, handles PKI certificate renewal, and implements lease lifecycle management with TTL monitoring.
HashiCorp Vault MCP Server
The official HashiCorp Vault MCP server lets AI assistants read, write, list, and delete secrets in Vault's KV engine through a safe, auditable MCP interface. Supports both stdio and HTTP transports, TLS encryption, and CORS controls.