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. 1960 published MCP servers match this ranking. The highest trust scores right now are Context7 at 74, OpenTakeoff at 74, olcli at 73. 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.
Wiktionary MCP — multilingual dictionary via Wikimedia REST + MediaWiki Action API
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.
Self-hosted collaborative LaTeX editor: read and edit files, typeset, get the errors and the PDF.
RegistryRemote
CLicense–QualityAMaintenanceLicense: C. AGPL-3.0 is a strong copyleft license: derived works must use the same license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 7 days ago.
Work with Redmine issues, projects, time entries, wiki pages and more. Read-only by default.
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 4 days ago.
Cities: Skylines II wiki, encyclopedia, and mod workflow tools for AI agents.
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 49 days ago.
The canonical Python stdlib oracle for AI coding agents — always free, always MIT, token-frugal.
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.
Build HOI4 mods: focus trees, events, decisions, worlds, GUI previews, docs and AI balance.
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 7 days ago.
Read-only codal.ir: search disclosures of Iranian listed companies, read letters and statements.
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.
DXF and PDF/X-4 for AI agents: structured facts, PNG renders, an interactive in-chat viewer.
RegistryRemote
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 19 days ago. Down one letter for 31 open issues against 6 stars.
Dubai and UAE public data plus curated business setup knowledge across 120 MCP 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 25 days ago.
Search PubChem by structure: a local similarity/substructure index, live PubChem data, RDKit 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 16 days ago.
Federated academic search, citation traversal, persistent PDF download, and temporary reading.
Registry
ALicense–QualityBMaintenanceLicense: A. Apache-2.0 is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 30 days ago.
Extract structured, schema-validated data from PDFs, scans, images, spreadsheets, and forms.
Registry
ALicenseBQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: B. 71/100 for listing completeness. Lost points: 1 of 1 tools barely described, short summary.Maintenance: A. Last commit or release 9 days ago.
DBpedia MCP — SPARQL + Lookup over Wikipedia-derived structured data
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.
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.
World Bank Climate Change Knowledge Portal (CCKP) MCP.
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.
Design, mock, test, document and monitor your APIs from one living OpenAPI spec.
RegistryRemote
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 39 days ago.
Verify PDF signatures, detect tampering, and identify PDF/A and PAdES conformance levels.
Registry
ALicenseAQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: A. 93/100 for listing completeness. Lost points: 1 of 8 tools barely described, short summary.Maintenance: A. Last commit or release 25 days ago.
Reactome MCP — open biological pathway knowledge-base.
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.
MCP server for SolarWinds Service Desk tickets, catalog, knowledge, ITSM operations, and workflows.
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 8 days ago.
Search and browse 2,900+ official GitLab documentation pages via MCP
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 12 days ago.
The accessibility layer for AI coding agents: audit, fix, document and watch - WCAG 2.2.
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 6 days ago.
Jira/Confluence MCP server (MCP 2026-07-28): sprints, boards, attachments; writes or read-only
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 12 days ago.
Search an Octri project's API docs and call its endpoints as tools, shaped by its SDK Studio config.
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.
md-log MCP: save/update/fetch markdown by path (stdio + remote HTTP, PAT auth).
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.
