"Web search without requiring an API key" matching MCP connectors:

FastMCP server for TheBrain API — AI access to a personal knowledge graph, Tollbooth-monetized

Serve a folder of Markdown notes as an MCP server: hybrid search, reading, and sourced answers.

Memoket — access your recording transcripts, summaries, and key takeaways over MCP.

Google NotebookLM via natural language: create notebooks, add sources (PDF, URL, YouTube) and ask gr

Agent-native notes, tasks, dev-docs, vaults, sync & handoffs. MCP + OpenAPI dual surface.

MCP-native open-source Notion alternative: read & write pages, databases and kanban boards.

Self-hostable team wiki; agents read & write it via MCP; Atlas turns your repo into a cited wiki.

Build and study spaced-repetition flashcards with your agent.

Search everything you save: YouTube, articles, podcasts, PDFs, Notion, Obsidian. API key or OAuth.

Connect your Rock workspace to any MCP client. Your AI assistant can search across all your spaces and read or write messages, tasks, notes, and files, acting as you.

Search and read your Laxis meeting transcripts, AI summaries, and participants from Claude.

Read-only access to your SessionKeeper TTRPG campaigns - session summaries and transcripts, character rosters, NPC and wiki entries, DM prep notes, and player feedback. Built for Dungeons & Dragons (D&D) and other tabletop RPG groups.

Markdown-first MCP server for Notion API with 8 composite tools and 39 actions.

Search your Glasp web and Kindle highlights, notes, and AI memories from any MCP client. Read-only.

MCP server for AgentDocs (agentdocs.eu): read, search, write, comment on & share Markdown docs.

Google Keep-style notes app with an MCP server for AI agents to read/write notes.

Private journal MCP server to search, analyze, and create Dabble Me entries securely via OAuth.

Create, search and manage Knowtis collaborative notes from AI assistants.

Search, save, and set reminders in your personal MarkIt library of links, posts, and notes.

Penlog is an Apple Pencil journaling app for iPad that reads each handwritten page into structured tasks, notes, and priorities. Its MCP server exposes that journal to your AI: search pages by topic, pull open tasks with reconciled status, read a full day's page, and create or update tasks that appear on your handwritten page and sync to Notion. Write by hand. Work with everything.