Packages

Lightweight MIME type detection library for Node.js and browsers. Maps file extensions to MIME types (e.g., '.js' → 'text/javascript', '.png' → 'image/png') and vice versa. Implements the MIME Database (mime-db) with comprehensive type coverage. Two variants: mime (full database, larger) and mime/lite (smaller subset). The standard library for Content-Type header determination when serving files or handling uploads in Node.js HTTP servers.

Python library providing 100+ additional iterator utilities beyond Python's stdlib itertools. Includes chunked, windowed, batched, flatten, zip_broadcast, side_effect, seek_after, and many more. Essential for data processing pipelines, ETL scripts, and functional-style Python code. Docs-driven design with extensive usage examples.

Browser automation library for Python — controls Chromium, Firefox, and WebKit browsers programmatically. playwright features: sync and async APIs, auto-wait for elements (no explicit sleeps needed), page.goto()/click()/fill()/type()/select(), locators API (page.locator('css') with get_by_text/role/label/placeholder), network interception (page.route()), screenshots/video recording, tracing for debugging, PDF generation, multi-tab/multi-page, context isolation, device emulation, geolocation, permissions, and chromium-specific APIs. Significantly more reliable than Selenium due to auto-wait and modern architecture.

Provides a quickstart template to build and deploy custom remote MCP servers using Azure Functions.

Subcog is a persistent memory system for AI coding assistants that captures decisions, learnings, and context from coding sessions, featuring hybrid search and MCP server integration.

RFC 4122 compliant UUID generation for JavaScript and Node.js. Supports UUIDv1 (time-based), UUIDv3 (namespace MD5), UUIDv4 (random), UUIDv5 (namespace SHA1), and UUIDv7 (time-ordered random, new in v10). UUIDv7 is increasingly preferred over v4 for database primary keys as it's sortable by creation time. The standard UUID library for JavaScript.

End-to-end browser testing framework for web apps that runs tests directly in the browser with real-time reloading and automatic waiting.

Fluent validation rules library for .NET — defines validation logic in separate validator classes using chainable rule syntax. FluentValidation: class AgentCreateValidator : AbstractValidator<AgentCreateRequest> { RuleFor(x => x.Name).NotEmpty().MaximumLength(100).WithMessage("Agent name required"); RuleFor(x => x.Config).SetValidator(new AgentConfigValidator()); }. Features: built-in validators (NotNull, EmailAddress, Must, Matches, InclusiveBetween), async validation, conditional rules (When, Unless), rule sets for partial validation, localization, and collection validation (RuleForEach). Integrates with ASP.NET Core model validation pipeline for automatic validation before controller action execution. Replaces DataAnnotations for complex agent validation rules.

Official LAPRAS MCP server enabling AI agents to access LAPRAS — Japan's developer portfolio and assessment platform — retrieving developer profile scores, activity data, technology assessments, and integrating LAPRAS's developer evaluation metrics into agent-driven HR and developer discovery workflows.

Fundamental package for numerical computing in Python. NumPy provides the N-dimensional array (ndarray) with vectorized mathematical operations that run as compiled C/Fortran code — 10-100x faster than pure Python loops. The foundational library that pandas, scipy, scikit-learn, TensorFlow, and PyTorch all build on. Essential for any numerical, scientific, or machine learning work in Python.

MCP server for PwnDoc — the popular open-source penetration testing report writing tool. Enables AI agents to create, manage, and update pentest findings, vulnerabilities, and reports in PwnDoc. Automates the tedious report-writing phase of penetration testing by allowing agents to document findings programmatically.

The foundational Python data manipulation library. pandas provides DataFrame and Series data structures with operations for reading CSV/Excel/JSON/SQL, filtering, grouping, joining, pivoting, time series analysis, and exporting. The lingua franca of Python data science — virtually every data pipeline, ETL process, and analysis notebook uses pandas. pandas 2.0 introduced Arrow-backed dtypes for significantly better performance.

MCP server enabling AI agents to interact with Power BI semantic models, supporting natural language-driven creation, modification, and querying of tables, measures, relationships, and DAX.

Unit testing framework for .NET — uses [Fact] for parameterless tests, [Theory] with [InlineData] for parameterized tests, constructor injection for setup, and IDisposable/IAsyncDisposable for teardown. xUnit.net features: no [SetUp]/[TearDown] attributes (constructor/dispose pattern instead), [ClassFixture<T>] for shared expensive setup across tests in a class, [CollectionFixture<T>] for shared setup across test classes, Assert.Throws<T>, Assert.Equal with detailed diffs, and parallel test execution by default. Preferred over NUnit and MSTest for modern .NET projects — used by ASP.NET Core and Entity Framework Core test suites. Integrates with Moq/NSubstitute for mocking agent service dependencies.

MCP server for Bitwarden — the open-source password manager and secrets manager. Enables AI agents to interface with Bitwarden Secrets Manager (not personal vault) for managing application secrets, API keys, and credentials. Bitwarden Secrets Manager is the enterprise-grade secrets management product distinct from the personal password manager.

Enterprise-grade cloud content management API for storing, managing, sharing, and collaborating on files with advanced security, compliance, and governance controls.

Comprehensive cryptocurrency market data API providing prices, market caps, volume, historical data, exchange data, and DeFi protocol metrics for 10,000+ coins and tokens.

DeepSeek R1 MCP server enabling AI agents to access DeepSeek R1 — the powerful open-source reasoning model from DeepSeek — for extended thinking and chain-of-thought reasoning tasks, integrating DeepSeek's competitive reasoning capabilities into agent workflows that need deep analysis.

MCP server for discovering festivals worldwide by location, date, and genre. Enables AI agents to find, compare, and filter festivals — supporting event planning, travel planning, and entertainment discovery workflows with worldwide festival data.

Enterprise mapping and location platform providing geocoding, routing, real-time traffic, fleet management APIs, and highly accurate map data especially strong in Europe and Asia.