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Open-source toolkit from the Docling project for parsing PDF, DOCX, PPTX, XLSX, HTML, images, and more into a unified DoclingDocument, with advanced PDF understanding, OCR, and exports to Markdown and JSON for gen AI and RAG workflows.

Open-source Python library from dottxt for structured LLM generation, guaranteeing outputs that match a JSON schema, Pydantic model, regex, grammar, or multiple-choice set during generation across many model backends.

Official Flutter team Agent Skills for AI coding agents building Flutter apps, fixing layout issues, adding widget and integration tests, creating widget previews, applying layered architecture, routing, localization, JSON serialization, and HTTP workflows.

Apache-2.0 `gws` command-line tool for Google Workspace APIs with structured JSON output, dynamic Discovery API commands, npm and release installers, Gemini CLI extension metadata, and 100+ bundled Agent Skills.

Agent Skills for Obsidian by Steph Ango, teaching Claude Code, Codex, OpenCode, and skills-compatible agents to work with Obsidian Flavored Markdown, Bases, JSON Canvas, Obsidian CLI, vaults, plugins, themes, and Defuddle-powered web-to-markdown extraction.

Official Go SDK for Model Context Protocol servers and clients, maintained by the MCP project in collaboration with Google, with packages for MCP, JSON-RPC, OAuth primitives, OAuth protected-resource metadata, clients, servers, transports, examples, and conformance work.

Official Ruby SDK for Model Context Protocol clients and servers, published as the `mcp` gem with JSON-RPC handling, tool, prompt, and resource registration, stdio and Streamable HTTP transports, Rack/Rails integration, roots, sampling, elicitation, logging, cancellation, pagination, and RubyGems metadata.

Community reusable agent prompt for pre-publish review of MCP Registry server.json metadata using official quickstart and authentication documentation: namespace checks, package pointers, field validation, and duplicate listing detection.

Expert capability pack for reviewing Claude Code subagent transcript files, documented retention settings, compaction events, and summary handoff so verbose delegated work stays out of the main conversation.

Slash command that validates a HeyClaude Raycast extension feed JSON file against registry schema expectations: required entry fields, forbidden payload keys, HTTPS detail URLs, MCP install targets, and copy preview limits.

Source-backed workflow for publishing public MCP server metadata to the official MCP Registry with mcp-publisher, server.json, package verification, namespace authentication, and post-publish checks.

MCP server for Odoo ERP systems, with tools for reading records, discovering models and fields, aggregating data, diagnosing access, scanning addons, planning migrations, and running gated safe-write workflows.

PostToolUse hook that compares a just-edited OpenAPI or JSON Schema document against the version committed in git and warns about backward-incompatible drift — removed OpenAPI paths and removed required properties — so breaking API changes are surfaced before they ship. Advisory only; it never blocks the edit.

Read-only Claude Code PostToolUse hook that runs Biome's formatter, linter, and import-sorting checks on edited JavaScript, TypeScript, JSON, CSS, and GraphQL files without auto-writing changes.

Claude Code statusline that reads OSV-Scanner JSON results and prints a compact dependency vulnerability count for review sessions.

PostToolUse hook that keeps a project's README in sync with the code. When the README or package.json is edited it checks for the standard-readme core sections (Install and Usage) and verifies that the CLI commands exposed via package.json bin are documented. Advisory only; it never edits files.

Public Streamable-HTTP MCP server for the Metagraphed Bittensor subnet integration registry — discover subnets, check health and economics, read metagraph data, and look up accounts or API surfaces without wallets or signing.

Official Pinecone Developer MCP server that connects Claude and other MCP clients to Pinecone projects and documentation for index management, record upserts, semantic search, cascading multi-index search, reranking, and documentation lookup over integrated-inference indexes.

Official remote MCP server for querying and creating Amplitude analytics, dashboards, experiments, cohorts, session replay insights, and product data from Claude and other MCP clients.

Official dbt Labs MCP server that gives AI agents context from dbt Core, dbt Fusion, dbt Platform, project metadata, SQL tools, lineage, Admin API, and dbt documentation search.

Official Firecrawl MCP server for scraping, crawling, mapping, searching, and extracting web content through Claude Code, Claude Desktop, Cursor, VS Code, Windsurf, and other MCP clients.

Expert skill for reviewing GitHub Artifact Attestations, release artifact digests, workflow provenance, OIDC boundaries, and public release evidence before an AI agent recommends or publishes build outputs.

PreToolUse hook that blocks edits adding remote MCP server URLs unless their host appears in an explicit allowlist, reducing accidental connection to unreviewed OAuth, SSE, or Streamable HTTP MCP endpoints.

Official Microsoft Learn remote MCP server that gives AI agents real-time access to Microsoft documentation search, page fetch, and code sample search.

Official OpenAI skill that tells agents to use the OpenAI developer documentation MCP server first for API, Codex, Apps SDK, model-selection, and migration questions.

Open-source framework from OpenAI for evaluating LLM and agent behavior with reusable eval definitions, grading logic, datasets, and regression workflows.

Expert skill for reviewing Playwright trace artifacts, screenshots, action timelines, network events, retries, and CI evidence to classify flaky browser test failures without guessing from logs alone.

LoopOver MCP connects Claude and other MCP clients to private, metadata-only Gittensor contribution workflows for branch preflight, scoreability estimates, maintainer-fit checks, and public-safe PR packets.

Soothing Catppuccin Mocha theme statusline with 26 pastel colors, Powerline separators, and modular segments for Git, model info, and token tracking.

Clean, performance-optimized statusline with Powerline glyphs showing model, directory, and token count