Best search MCP servers

Plain-markdown second brain for you and your AI: notes, projects, tasks, search, links.

Audit a site for SEO and AI search, check localhost pages, and apply or open PRs for fixes.

Reverse engineering of .NET assemblies and native binaries: decompile, search, compare, patch.

Search, read and compare Hacker News "Who is hiring?" job posts as typed data. Read-only.

Cloud or self-hosted knowledge for AI agents: hybrid search, reranking, GraphRAG, scoped MCP tools.

Verified AI/tech jobs from company ATSs: search, fit matching, salary stats; employer job posting

Search scholarly papers, find open access copies and related work through OpenAlex. No key needed.

Scaffold VTEX IO apps, Node services and GraphQL, look up Store Framework block props, search docs

Mail and contacts on a self-hosted Stalwart server via JMAP: search, read, OCR, send, drafts.

SkillWorks: Search published Claude Code skills, plugins and marketplaces.

What search and AI crawlers extract from any public URL. Five of nine tools need no token.

Read public Twitter/X data: tweets, profiles, followers, search. No X developer account.

Search Linux apps on Flathub. No key required.

Property intelligence: 180M+ US parcels — lookup, search, owners, hazards, permits, deeds.

Inspect, search, fetch, and convert local documents and mail stores with bounded access.

Search Japanese Diet bills and meeting transcripts (NDL Kokkai API) with source attribution.

Search Viator tours and activities — products, availability, attractions, destinations.

MCP server for Yandex Wiki with full-text search.

MusicBrainz MCP — search/browse music metadata, cover art, and submit tags/ratings/collections

Zero-LLM structural code retrieval for AI coding agents, served over MCP.

Every IT Glue resource, plus an offline SQLite mirror, fleet-wide cross-resource search, and

Run any Relay model (image, video, audio, LLM), poll tasks, upload files and search Relay's docs.