"Services or tools that don't require a separate API key" matching MCP connectors:

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

Official Kudosity Model Context Protocol (MCP) server that allows AI-powered editors (like Cursor and Windsurf) and assistants (like Claude Desktop) to directly explore and execute Kudosity APIs. With MCP, your AI can search API specs, generate code snippets, and run live requests; all without leaving your development environment.

Provides a platform-agnostic specification of the technical features every decent website should have

Canonical vocabulary server for autonomous business design. Exposes the Arco Lexicon as seven MCP tools: term lookup, related terms, alignment verification, citation formatting, source retrieval, term listing, and term suggestion. No authentication required. Streamable HTTP transport.

A semantic search server that gives AI assistants instant access to Dodo Payments documentation and knowledge base.

Official MCP server providing AI assistants with direct access to Stimulsoft Reports & Dashboards developer documentation. Enables semantic search across FAQ, Programming Manual, Server Manual, User Manual, and Server/Cloud API references across all Stimulsoft platforms (.NET, WPF, Avalonia, WEB, Blazor, Angular, React, JS, PHP, Java, Python).

Search and read the StitchAPI docs: search_docs finds relevant sections, get_doc reads a page.

Search the official MCP registry: 17,000+ servers with trust grades, stars, tools, install config.

Search and get install details on MCP servers, right from your agent -- a unified marketplace index.

2,029 DISA STIG rules with official check/fix text, CCI mappings, and .ckl checklist export.

Subcontractor COI & paperwork tracking for general contractors — read-only demo tools.

Official Microsoft Learn MCP Server – real-time, trusted docs & code samples for AI and LLMs.

Fill standard legal agreement templates (NDAs, SAFEs, NVCA docs, employment) as DOCX files.

Search @imqueue docs and scaffold typed services & clients from your AI coding agent.

The official Svelte MCP server providing docs and autofixing tools for Svelte development

Zyrvix crypto-payments API reference for AI coding assistants. Anonymous, read-only.

What breaks when you upgrade a package, and what to use instead - from official docs.

AI access to Mapbox docs, API references, style specs, and guides. No token required.

Query any docs site via MCP. Submit a URL, ask questions, get cited answers.

Turn a GitHub repo or docs site into agent-ready context: pack it or search it, over MCP.