AI and memory servers store what an agent learns, retrieve from vector indexes, or call other models. Note where embeddings are computed and where memories are stored before you connect one. 3576 published MCP servers match this ranking. The highest trust scores right now are OpenNodes at 55, modelwatch at 55, Gemdex 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 AI and memory MCP servers is not a paid placement.
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Every server that matches this ranking, ordered by trust score.
Shared versioned state for multi-agent AI workflows
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 4 months ago.
Unified earthquake data from 20 global seismic agencies, with cross-agency report reconciliation.
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 4 months ago.
Token cost math for LLM API calls: verified per-1M-token rates for 69 models, 17 providers.
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 4 months ago.
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 4 months ago.
Semantic code retrieval engine with hybrid search, context expansion, and 40+ language support.
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 4 months ago.
AI image, video & music generation. Flux, Veo 3.1, Suno V5. Free tier included.
RegistryRemote
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 4 months ago.
Persistent project memory for AI coding agents: one compact digest instead of re-reading the repo.
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 4 months ago.
Free open-source web search and page reading for LLMs, AI agents, and RAG.
Registry
ALicenseBQualityCMaintenanceLicense: A. MIT is a permissive open source license.Quality: B. 84/100 for listing completeness. Lost points: 1 of 3 tools barely described, short summary.Maintenance: C. Last commit or release 3 months ago.
Local research agent that verifies its own answers. Runs on Gemma 3 4B + Ollama, $0/query.
Registry
ALicense–QualityDMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: D. Last commit or release 6 months ago.
Austria RIS: federal & state law, case law, gazettes, change monitoring (Bundesrecht, Judikatur).
Registry
ALicense–QualityCMaintenanceLicense: A. Apache-2.0 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.
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 4 months ago.
AI memory across Claude, ChatGPT, Gemini, and Cursor. Save, search, and recall context everywhere.
Registry
–License–QualityAMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 15 days ago.
Local encrypted memory for AI: hybrid search, 8 MCP tools, one file you own. Free, no cloud.
Registry
–License–QualityAMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 28 days ago.
Health and token cost of every remote MCP registry server, probed daily. Look up, search, or probe.
RegistryRemote
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 8 days ago.
ppl personal CRM: contacts, relationship notes, birthdays and follow-ups for AI agents. Hosted MCP.
RegistryRemote
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 19 days ago.
Local codebase search for AI assistants via MCP. Requires Hawkeye and Hawkeye AI Bridge installed.
Registry
–License–QualityBMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 30 days ago.
APITier utility APIs as MCP tools: validation, UK/India address lookup, barcode/QR, data conversion.
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 5 months ago.
Deterministic SVG perception for LLM agents — measures, never guesses. MCP server.
Registry
–LicenseCQuality–MaintenanceLicense: Not graded. No license is recorded for this server.Quality: C. 65/100 for listing completeness. Lost points: no listed tools, short summary.Maintenance: Not graded. No commit or release date has been recorded.
Individual-analyst context layer: recall, remember, and reconcile your data and engineering context.
RegistryRemote
–License–QualityBMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 54 days ago.
Cuts AI web-fetching costs up to 99.9% by stripping page junk before it reaches your LLM.
Registry
ALicense–QualityDMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: D. Last commit or release 7 months ago.
MCP server for Bear notes — read, search, create, edit, tag, and manage notes via CloudKit
Registry
ALicense–QualityDMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: D. Last commit or release 6 months ago.
Local FAISS vector database for RAG with document ingestion, semantic search, and MCP prompts.
Registry
ALicense–QualityDMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: D. Last commit or release 6 months ago.
Persistent memory MCP server for AI coding assistants. Chinese-first and fully local.
Registry
–LicenseCQualityBMaintenanceLicense: Not graded. No license is recorded for this server.Quality: C. 65/100 for listing completeness. Lost points: no listed tools, short summary.Maintenance: B. Last commit or release 2 months ago.
Deterministic batch tools so LLM agents stop guessing dates and math.
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 5 months ago.
