Catalog
Every x402, MPP, MCP, and skill listing we've indexed, normalized, and enriched.
Harper Offline Privacy-First Grammar Checker by Automattic
Harper is an offline, privacy-first grammar checker written in Rust by Automattic. It runs locally with sub-10ms response times, supports LSP for editor integration, compiles to WebAssembly for browser use, and provides grammar, spelling, and style checking without sending text t
Harness Open Source Self-Hosted Git and CI/CD Development Platform
Harness Open Source (formerly Gitness) is an end-to-end developer platform that integrates Git repository hosting, CI/CD pipelines, hosted development environments, and artifact registries in a single self-hosted binary.
Harden-Runner CI/CD Security Agent for GitHub Actions
Harden-Runner by StepSecurity is a CI/CD security agent that works like an EDR for GitHub Actions runners. It monitors network egress, file integrity, and process activity in real-time, detecting supply chain attacks such as the tj-actions and Codecov compromises.
Hanko Open Source Passkey Authentication and User Management
Hanko is an open-source authentication and user management platform built on passkeys and WebAuthn. It provides a drop-in authentication solution as an alternative to Auth0, Clerk, and Stytch, with pre-built web components, a REST API, and an admin dashboard.
HandBrake Open-Source Video Transcoder
HandBrake is a widely-used open-source video transcoder that converts video files between formats for playback on phones, tablets, TVs, game consoles, and web browsers. It supports most common input formats and leverages FFmpeg, x264, x265, and SVT-AV1 for encoding.
Test API authorization flows with Hadrian
Lets an agent exercise REST, GraphQL, and gRPC authorization paths with YAML-defined role tests so BOLA, BFLA, broken authentication, and related API flaws are caught before release.
Hacker News Deep Thread Analyzer
Scrapes and analyzes Hacker News threads using the official HN Firebase API and BeautifulSoup. Extracts sentiment trends, expertise signals, and generates structured summaries with key arguments mapped.
Gutenberg Custom Block Builder
Scaffolds and builds custom Gutenberg blocks using @wordpress/create-block and the Block API registerBlockType(). Generates edit/save components with InspectorControls, RichText, and InnerBlocks support.
Gutenberg Block Scaffolder
Generates custom Gutenberg blocks using @wordpress/create-block and the Block API v3 schema. Produces edit.js, save.js, block.json, and render.php with InnerBlocks support and block.json viewScriptModule.
Gutenberg Block Pattern Generator
Generates custom WordPress Gutenberg block patterns using register_block_pattern() and the Block Editor API. Creates reusable pattern categories with register_block_pattern_category() for organized content libraries.
Gum Interactive Shell Script Toolkit
Gum by Charmbracelet is a tool for building glamorous shell scripts. It provides configurable terminal UI components (choose, confirm, input, filter, spin, table, format) that can be used directly from bash to create interactive, visually polished CLI experiences.
GStreamer Pipeline Graph Optimizer
Analyzes and optimizes GStreamer media pipelines by parsing DOT graph dumps from GST_DEBUG_DUMP_DOT_DIR, profiling element throughput via gst-stats, and suggesting queue sizing and thread pool configurations.
GStreamer Live Stream Transcoder
Builds GStreamer pipelines for real-time video transcoding with NVENC/VA-API hardware acceleration. Supports adaptive bitrate HLS/DASH output via GStreamer's hlssink2 and dashsink elements.
Google Search Console Performance Analyzer
Pulls search analytics from Google Search Console's /searchanalytics/query API to identify declining pages and keyword cannibalization. Calculates CTR optimization opportunities by comparing actual vs expected click-through rates.
Google Search Console Insights Agent
Extracts search performance data via the Google Search Console API v1 /searchAnalytics/query endpoint. Analyzes CTR, impressions, and position trends with dimension filtering by page, query, device, and country.
Grype Container and SBOM Vulnerability Scanner
Scan container images, filesystems, and SBOMs for known vulnerabilities using Anchore Grype. Supports major OS package ecosystems and language-specific packages with EPSS risk scoring and OpenVEX filtering.
grpcurl Command-Line gRPC Client
Like cURL but for gRPC servers. A command-line tool for interacting with gRPC services using server reflection or proto files, supporting unary calls, streaming, TLS, and metadata headers.
gRPC Service Tool
The open catalog of AI agent skills — 2,000+ security-scanned skills for Claude Code, Cursor, Codex, and more.
Grounded Docs MCP Server
Grounded Docs MCP Server gives AI coding assistants a version-aware documentation index built from official sources like websites, GitHub, npm, PyPI, and local files. It helps agents fetch current docs, search them semantically, and reduce hallucinations when working against real
Ground PostgreSQL code generation in exact docs and best-practice skills through pg-aiguide
Give coding agents a PostgreSQL-specific reference layer with semantic doc search and curated schema, indexing, and constraint guidance before they generate database code.
gron Greppable JSON Flattener
gron transforms JSON into discrete assignment statements, making it possible to grep through complex JSON structures using standard Unix tools. It reverses the process with ungron, turning filtered assignments back into valid JSON.
Grist Self-Hosted Relational Spreadsheet and Database Platform
Grist is an open-source modern relational spreadsheet that combines the flexibility of a spreadsheet with the robustness of a database. It supports Python formulas, a REST API, self-hosting via Docker, and AI-powered formula assistance.
Griptape Modular Python AI Agent and Workflow Framework
Griptape is a modular Python framework for building AI agents and workflows with chain-of-thought reasoning, tools, and memory. It provides Agents, Pipelines, and Workflows as core structures, with pluggable drivers for LLMs, embeddings, vector stores, and more.
grex Regular Expression Generator from Test Cases
grex is a command-line tool and library that automatically generates regular expressions from user-provided test cases. Written in Rust with Python bindings, it produces the most specific regex that matches the given input, supporting Unicode 16.0, character class detection, quan