Knowledge servers search wikis, notes, and documentation so answers cite your own pages. The integration token decides what the agent can read, so share only the spaces it needs. 1982 published MCP servers match this ranking. The highest trust scores right now are PaperType at 55, Quire PDF at 55, gogcli-mcp-docs at 55. The order is the published trust score: registry record, license, maintenance, popularity, documentation, and security signals. Featured slots, when an editor sets them, are labeled and do not change the score. Best knowledge MCP servers is not a paid placement.
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Full ranking
Every server that matches this ranking, ordered by trust score.
26 deterministic tools: PDF, image, QR, CSV/Excel, HTML to PDF, DNS/RDAP, FX rates, time zones.
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
Search AgentTwin agent testing guides, Node CLI commands and supported synthetic service contracts.
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
x402 agent tools: invoice/PDF extract, OCR, email risk, web to markdown, domain, FX, time
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
Read versioned developer documentation with original source links using five public MCP tools.
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
Shared knowledge base that people and AI agents read and write: pages, atoms, hybrid search.
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
MCP, CLI, Skills for searching and downloading academic papers from multiple sources like arXiv, PubMed, bioRxiv, etc.
ALicense–QualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 37 days ago.
Read-only local-first MCP server for private Markdown, PDF, and Tika-backed search on Windows.
Registry
ALicense–QualityCMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: C. Last commit or release 3 months ago.
Apple developer docs, Human Interface Guidelines and 1,700 WWDC sessions with code for AI assistants
Registry
ALicenseDQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: D. 48/100 for listing completeness. Lost points: short README, no listed tools, short summary.Maintenance: A. Last commit or release 21 days ago.
MCP server for Obelinf, the network documentation platform. Sites, racks, devices, IPs, VLANs.
RegistryRemote
ALicenseCQualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: C. 65/100 for listing completeness. Lost points: no listed tools, short summary.Maintenance: B. Last commit or release 2 months ago.
Auditable MCP server for PubMed, Europe PMC, ClinicalTrials.gov, and bioRxiv/medRxiv queries
RegistryRemote
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 29 days ago.
Google Trends & Ads Transparency Center, keywords, apps, jobs, events, docs, screenshots, groceries
RegistryRemote
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 9 days ago.
Scaffold VTEX IO apps, Node services and GraphQL, look up Store Framework block props, search docs
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 19 days ago.
Local-first PDF accessibility audits with cited findings and an offline HTML report.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 5 days ago.
DataForSEO MCP wrapper: searchable API docs plus normalized calls to the official server. 4 tools.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 24 days ago.
Fast MCP server for Google NotebookLM: notebooks, sources, cited chat, research. Unofficial.
Registry
ALicense–QualityAMaintenanceLicense: A. Apache-2.0 is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 3 days ago.
Shared local knowledge vault MCP server for Claude Desktop (Chat + Code)
Registry
ALicense–QualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 34 days ago.
Export Markdown to PDF and open it in the MarsDawn app on macOS, with the marsdawn CLI.
Registry
ALicense–QualityAMaintenanceLicense: A. Apache-2.0 is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 22 days ago.
One MCP, many parsers. Routes between markitdown, Docling, and LlamaParse. Plus an interpret tool…
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 13 days ago.
10 tools on official open data: EU VAT/LEI, TED tenders, PubMed, trials, registries, weather.
RegistryRemote
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 5 days ago.
All public upAPI operations as MCP tools: web scraping, search, screenshots, PDF, OCR and more.
RegistryRemote
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 6 days ago.
Connect Claude to a self-hosted Total CMS site: search content, read docs, manage with an API key.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 14 days ago.
Competitor monitoring for AI agents: track rival pricing, docs and changelog changes with evidence.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 10 days ago.
Find, fill and verify official Philippine government forms: BIR, SSS, PhilHealth, Pag-IBIG, CSC.
Registry
ALicenseBQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: B. 70/100 for listing completeness. Lost points: no README, short summary.Maintenance: A. Last commit or release 7 days ago.
French rental documents (leases, rent receipts, inventories) generated as filled PDFs by AI agents.
RegistryRemote
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 5 days ago.
