Catalog
Every x402, MPP, MCP, and skill listing we've indexed, normalized, and enriched.
Sync calendars between providers with a stateless CalendarSync job
Run a one-shot calendar sync or migration between Google, Outlook, CalDAV, ICS, and related systems without standing up a long-lived sync service.
Sync agent rules and skill files across coding assistants with AI Rules Sync
Use AI Rules Sync when the same operating rules, commands, skills, or subagents need to stay aligned across Claude Code, Cursor, Codex, Copilot, and related tools instead of being copied and updated by hand.
Syft SBOM Generator for Containers and Filesystems
Syft by Anchore is a CLI tool for generating Software Bills of Materials (SBOMs) from container images and filesystems. Supports CycloneDX, SPDX, and multiple output formats with coverage across dozens of packaging ecosystems including npm, PyPI, Go, and more.
Sweep GitHub for leaked secrets and exposed credentials with git-hound
Search public GitHub broadly for leaked secrets and triage exposures when the workflow is recon and remediation, not generic secret scanning.
SWC Speedy Web Compiler for JavaScript and TypeScript
SWC (Speedy Web Compiler) is a Rust-based JavaScript and TypeScript compiler that is 20x faster than Babel on a single thread and 70x faster on four cores. It handles transpilation, minification, and bundling, and powers major tools including Next.js, Parcel, and Rspack.
Swap a local service into a live Kubernetes environment to debug real cluster traffic before rollout with Telepresence
Intercept a Kubernetes service and route live cluster traffic into a local process so debugging happens against real dependencies before release.
Swagger UI Documentation Deployer
Deploys interactive Swagger UI documentation sites from OpenAPI specs with custom branding, authentication presets, and CDN-hosted static builds. Integrates with Redoc for alternative rendering.
Swagger / OpenAPI Validator
The open catalog of AI agent skills — 2,000+ security-scanned skills for Claude Code, Cursor, Codex, and more.
Swagger OpenAPI Schema Validator
Validates and lints OpenAPI 3.1 specifications using Spectral ruleset engine and swagger-parser. Detects breaking changes between API versions using oasdiff comparison tool.
Swagger Codegen Template Customizer
Extends Swagger Codegen and OpenAPI Generator with custom Mustache templates for client SDK generation. Supports Java (OkHttp/Retrofit), TypeScript (Axios/Fetch), and Python (httpx) output targets.
Swagger Codegen Orchestrator
Orchestrates OpenAPI 3.x code generation using swagger-codegen-cli and openapi-generator. Produces typed client SDKs for TypeScript, Python, and Go with custom Mustache templates.
Swagger Codegen API Client Builder
Generates typed API client libraries from OpenAPI 3.x specifications using swagger-codegen and openapi-generator-cli. Produces clients for TypeScript-axios, Python-requests, and Go-http with custom mustache templates.
Svix Enterprise Webhook Delivery Service
Svix is an open-source enterprise-grade webhook delivery service written in Rust. It handles webhook sending, retries, signature verification, and delivery monitoring so developers can offer reliable webhooks to their users with a single API call.
SVGO SVG Optimization Tool
An agent skill built on SVGO (SVG Optimizer), the Node.js tool for optimizing SVG files by applying a configurable set of transformation plugins. Removes unnecessary metadata, simplifies paths, collapses groups, and reduces SVG file sizes for faster web rendering.
SVG Animation Builder
Creates animated SVGs using GSAP (GreenSock Animation Platform) and the SVG DOM API. Generates timeline-based animations with morphing paths via flubber and scroll-triggered sequences using ScrollTrigger plugin.
Sveltia CMS Git-Based Headless Content Management System
Sveltia CMS is a free, open-source, Git-based headless CMS that runs entirely in the browser. Built as the definitive successor to Netlify CMS and Decap CMS, it offers a modern editing UX, first-class internationalization, and framework-agnostic design.
Surya Document OCR with Layout Analysis and Table Recognition
Surya is a document OCR toolkit by Datalab that performs OCR in 90+ languages, line-level text detection, layout analysis, reading order detection, table recognition, and LaTeX OCR. It benchmarks favorably against cloud OCR services on a wide range of document types.
Surfer SEO SERP Analyzer
Uses Surfer SEO Content Editor API to pull SERP analysis data including word count benchmarks, heading structure patterns, and NLP entity recommendations. Generates content briefs with target keyword clusters from Surfer Audit endpoints.
Surfer SEO Content Optimizer
Analyzes top SERP competitors using DataForSEO API and generates content optimization briefs with target word count, NLP entity coverage, heading structure, and internal linking recommendations.
Surfer SEO Content Optimizer Integration
Optimizes content against Surfer SEO's NLP-based recommendations via the Surfer API /v1/content_editors endpoint. Analyzes keyword density, heading structure, and semantic term coverage for target SERP ranking.
SuperTokens Open Source Authentication Platform and Auth0 Alternative
SuperTokens is an open-source authentication platform that serves as a self-hosted alternative to Auth0, Firebase Auth, and AWS Cognito. It provides passwordless login, social auth, MFA, session management, and multi-tenancy with SDKs for Node.js, Python, Go, and popular frontend
Supergateway MCP Transport Bridge
Supergateway enables running MCP stdio-based servers over SSE, WebSockets, or Streamable HTTP with a single command. Essential infrastructure for remote MCP server access, debugging, and connecting clients across network boundaries with Docker and OAuth support.
Super Productivity Open Source Task Manager with Time Tracking
Super Productivity is an advanced open-source todo list application with integrated timeboxing, time tracking, and Pomodoro timer capabilities. It supports importing tasks from Jira, GitHub, GitLab, Trello, and CalDAV calendars, making it a powerful cross-platform productivity hu