Catalog
Every x402, MPP, MCP, and skill listing we've indexed, normalized, and enriched.
Simulate buyer and user personas to pressure-test ideas and messaging with TinyTroupe
Use TinyTroupe when an agent should run simulated persona panels, synthetic interviews, or offline audience reactions before spending on campaigns, launches, or user research.
Simulate agent scenarios, trace failures, and watch production regressions with LangWatch
Run end-to-end agent simulations, review traces, and watch production regressions when reliability work spans pre-release testing and live monitoring.
Simplify recently changed code and open low-risk refactor pull requests
This entry turns GitHub Next's Code Simplifier workflow into a narrow cleanup agent. The agent inspects code changed in the last day, proposes behavior-preserving simplifications, runs validation, and opens small refactor pull requests instead of attempting broad rewrites.
Silero VAD Pre-Trained Enterprise Voice Activity Detection
Silero VAD is a pre-trained enterprise-grade Voice Activity Detector that identifies speech segments in audio streams. It runs locally via PyTorch or ONNX Runtime with minimal resource requirements, making it ideal for real-time audio processing pipelines.
Sigstore Cosign Verifier
Automates container image signature verification using Cosign CLI and the Rekor transparency log API. Validates SLSA provenance attestations and checks Fulcio certificate chains for keyless signing.
Sigstore Cosign Verification Pipeline
Verifies container image signatures and SBOMs using Sigstore Cosign and Rekor transparency log. Enforces supply chain security policies by validating keyless signatures against Fulcio certificate authorities.
Sigstore Cosign Container Verifier
Verifies container image signatures and provenance using Sigstore Cosign and Rekor transparency log. Enforces supply chain policies with OPA Gatekeeper admission rules.
Sigstore Cosign Container Signature Checker
Checks container trust with `cosign verify`, Rekor transparency log lookups, and OCI image reference inspection. Useful for agents that need to confirm whether an image was actually signed and recorded before it reaches a deployment pipeline.
SigNoz Open-Source Observability Platform
SigNoz is an open-source observability platform built around OpenTelemetry for logs, metrics, and traces in one place. It is a practical fit when you want Datadog-style visibility with a self-hosted stack, first-party docs, and active upstream maintenance.
Sign agent-made Git commits with gitsign
Apply keyless Sigstore-backed signatures to Git commits so automated changes retain verifiable provenance.
shot-scraper Automated Website Screenshot and Scraping CLI
shot-scraper is a Python CLI tool by Simon Willison for taking automated screenshots of websites and executing JavaScript against pages. Built on Playwright, it supports headless browser automation, multi-step screenshot workflows defined in YAML, and HTML-to-image rendering for
Shopify Admin GraphQL Sync Agent
Coordinates Shopify data syncs with the Admin GraphQL API, including `bulkOperationRunQuery`, node connections, and webhook-assisted delta updates. Useful for product, inventory, and order pipelines that need higher throughput than ad hoc REST polling.
Shodan Network Reconnaissance Agent
Performs network reconnaissance using the Shodan REST API and Shodan InternetDB. Discovers exposed services, CVE mappings, and generates asset inventories with risk scores for security teams.
Shiori Self-Hosted Bookmark Manager with CLI and Web Interface
Shiori is a simple, portable bookmark manager written in Go inspired by Pocket. It provides both a command-line interface and a clean web UI for adding, editing, searching, and organizing bookmarks with automatic offline archive generation and readable content extraction.
Sherlock Social Media Username Hunter Across 400+ Networks
Sherlock hunts down social media accounts by username across more than 400 social networks. It is the go-to OSINT CLI tool for verifying online identities, finding connected accounts, and building digital footprints from a single username string.
ShellCheck Shell Script Static Analyzer
Run static analysis on bash and shell scripts using ShellCheck to detect syntax errors, semantic pitfalls, and portability issues. Produces machine-readable diagnostics with fix suggestions.
Sharp Image Transform Pipeline
Builds composable image processing pipelines using the Sharp library with libvips bindings for Node.js. Chains resize, crop, overlay, and format conversion operations with streaming I/O, EXIF metadata preservation, and ICC color profile management.
Sharp Image Pipeline Skill
Processes images using the Sharp npm library (libvips). Supports batch resize, format conversion (WebP/AVIF/JPEG XL), watermarking, and metadata extraction. Generates responsive image sets with srcset dimensions.
Sharp Image Pipeline Processor
Builds composable image transformation pipelines using the Sharp library with operations like resize(), composite(), and toFormat(). Leverages libvips bindings for high-performance batch processing.
Sharp Image CDN Optimizer
On-the-fly image optimization using Sharp (libvips Node.js bindings) with CDN-aware caching headers. Supports responsive srcset generation, AVIF/WebP transcoding, and blur placeholder (LQIP) creation.
Shard slow pytest suites by historic timings before CI bottlenecks pile up with pytest-split
Lets an agent split a large pytest suite into timing-balanced shards so parallel CI lanes finish faster and with less variance.
Shard, retry, and summarize Rust test runs with CI-friendly artifacts and failure isolation using cargo-nextest
Use cargo-nextest when an agent needs more reliable Rust test execution than cargo test, especially for sharding, retries, machine-readable output, and CI triage.
shadcn/ui — Re-usable UI Component Collection for React
shadcn/ui is a collection of accessible UI components built with Radix UI and Tailwind CSS that you copy into your project for full customization. Includes 40+ components with variants, themes, and TypeScript support.
SerpBear Self-Hosted Search Engine Rank Tracking App
SerpBear is an open-source, self-hosted search engine position tracking application. It lets you monitor unlimited keyword rankings in Google with email notifications, a built-in SERP API, Google Search Console integration, and keyword research via Google Ads.