"Information about Obsidian (note-taking app or volcanic glass)" matching MCP connectors:

Connect your AI to any database — PostgreSQL, MySQL, or SQL Server — in seconds.

For queries a model can't confidently place: resolves or declines. Built to decline, not guess.

Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 tools.

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

Semantic search over the Stoic corpus — Marcus Aurelius' Meditations, Seneca's essays, and Epictetus' Discourses, Enchiridion and Fragments. Search by theme or citation, fetch any passage, or get the daily reflection. Public domain translations, no auth.

Know whether an AI agent should REUSE or REFETCH a URL before retrieving it again.

Create your digital twin: a public page that answers from your own material, with citations.

LLM-ready web search + instant answers + URL-to-clean-text fetch for agents and RAG.

Human-authored personal context before AI guidance, built through private structured reflection.

Multilingual YouTube → Knowledge Pack engine. Paste a video URL and get a structured pack — summary, key ideas, glossary, quiz, transcript with timestamps — in Spanish, Portuguese, German, or English. Anonymous endpoint plus OAuth-gated tools for library search, RAG Q&A on a single pack, and Anki export.

Kannada/English Carnatic flute KSGMS syllabus — search lessons, log practice, ask a RAG guru.

Semantic search over a 200-chunk ACLM lifestyle medicine knowledge base.

Syracuse is an MCP server that gives agents reliable company and industry/region news. Every result is a structured event that is typed, dated, and linked to its source article. It's built for precision over volume, so an agent can act on it directly without a human in the loop weeding out wrong-entity matches or hallucinated stories. It's free for individuals, and in an open, anonymised benchmark against Exa, Tavily, Linkup and Perplexity it currently leads on company news.

Real-time web search with answer-ready results for Claude, Cursor and any MCP client. A Tavily alternative: same speed, 20.2% fewer tokens, higher answer quality (60.7% of decided duels won) on a public benchmark. Hosted on mcp.serpdive.com or npx serpdive-mcp.

Persistent memory and knowledge graphs for AI agents. Hybrid search, context checkpoints, and more.

Persistent memory for AI assistants. Save once; recall from Claude, ChatGPT, or any MCP client.

Check claims against a fact-store: consistent, contradicts, or unverifiable — with a receipt.

x402-gated web search gateway. Tools: search, search_enriched.

RSS for ChatGPT, Claude & Gemini: semantic search, story clustering, keyword watches, OPML import.

Answers questions about a business using its indexed website content, with cited sources.