866 servers in Knowledge, Memory & RAG
Trail
arsprengel/trail-mcp
Issue tracker and durable project memory for your coding agent, scoped to the folder you open.
Tugra
dogrucanemek-alt/tugra
Provenance-aware memory format for AI agents: every claim carries its source, age and boundary.
unerr
unerr-ai/unerr-cli
Operational memory for AI agents: code graph, session memory & guardrails. No context rot.
Universal Research
mp-juns/universal-research-mcp
Provenance-first research memory with hash-bound evidence and a fail-closed eligibility gate.
Uuaid
uuaid/uuaid
Permanent identity + encrypted, quantum-ready memory that outlives the session, for any AI agent.
Vanguard Memory Node
ezumba/vanguard-memory-node
Local deterministic BM25 memory for AI agents. Offline-first, no API key, SHA-256 shards, stdio.
VasperaMemory
RCOLKITT/VasperaMemory
Persistent AI memory for coding assistants. 80+ tools for decisions, patterns, errors.
Vault Health
onetrueclaude-creator/vault-health-mcp
Obsidian vault structural health: broken links, orphans, missing frontmatter, safe auto-repair.
vaultguard
ashishrao-4/vaultguard
AI agents use your Obsidian secrets by name — values never reach their context.
Vaultwarden Drop Slot
ip2k/vaultwarden-drop-slot-mcp
Create-only, age-encrypted deposits of new logins and notes into Vaultwarden, without vault reads.
Vector Knowledge Graph
CSOAI-ORG/vector-knowledge-graph-mcp
AI-powered vector knowledge graph MCP server for agents. Supports add node, add edge, semantic node
Vector Mirror
c64dos-png/vector-mirror
Deterministic SVG perception for LLM agents — measures, never guesses. MCP server.
Vectordecisions
NikitaDatar/vectordecisions-mcp-server
AI Governance MCP Server - GATRI trust scoring, kill-switch, EU AI Act compliance for Claude
Vectorise Me
JonathanWeerakkody/Vectorise_Me
Vectorize images to SVG and export to PDF, EPS, DXF, PNG, JPG, or WEBP via Vectorise.Me.
VibeLawyer
Jack-mi/vibelawyer
Local MCP for Chinese criminal dossier review; Word notes + Excel catalogs stay on-device.
Vibemind Ableton
dmcsite/vibemind-ableton
Claude builds FL Studio and Ableton Live sessions: notes, presets, mixer, automation, measured mixes
vocce transcribe
cmoonagent/vocce-agent
Agent media tools: transcribe, summarize, notes, flashcards, doc Q&A, PDF compress. No API key.
What's Loaded
stcmain/whats-loaded-mcp
What fills your agent's context window before a session starts: skill descriptions, memory files.
Wikidata + Google Knowledge Graph
com.dondego/wikidata-google-knowledge-mcp
Read-only Wikidata tools and identity evidence. Local optional Google KG; bounded public remote.
WireCat Memo
WireCatLabs/cli-memo
People's context across messengers, notes and mail, from a local store. Set up the memo CLI first.
WorkFlow Companion
TeamDzX/workflow-companion
Claude on Windows or Linux works in your WorkFlow tasks, notes and projects via your own iCloud.
Wuniq KE (Knowledge Engine)
Wuniq/wuniq-mcp
The structured memory layer your AI is missing. Requires the free Wuniq desktop app.
yandexgpt
theYahia/yandexgpt-mcp
MCP server for YandexGPT — completions, embeddings, classification, summarization (Russia)
Yaps
richawo/yaps-mcp
Transcription, subtitles, meeting transcripts, translation, audio conversion, and private memory.
Zaaheen
shahbaz242630/zaaheen
One encrypted memory for all your AI apps, on your computer. Needs the Zaaheen app (30 days free).
Zas
soke1556/zas-agent
Move files and notes between a coding agent and your Zas channels, encrypted here or via Directo.
Zenitsu
ANSHAY/zenitsu-releases
Your local Zenitsu tasks and notes for AI apps. Needs the Zenitsu app (Linux).
ZettelForge
rolandpg/zettelforge
Agentic memory for cyber threat intelligence. STIX graphs, actor aliasing, offline RAG, Sigma/YARA.
水素分子医学文献データベース
h2-papers/h2-papers-mcp-server
PubMed molecular-hydrogen medical literature with delivery-aware safety notes inline.
Agent Commons
gvb9/agent-commons
Free public notebook and mailboxes for AI agents: shared notes, votes, no accounts.
Agent Commons
sibi-narendran/common-agent-network
A home for any agent: inbox, public memory, job board, rooms, human help. Free, no key.
Anansi Haven
kburrus64-max/anansi-haven
Free home base for AI agents: memory, job board, agent directory, safe commons and free tools.
Brainfile
io.brainfile/brainfile
Brainfile memory layer for Claude Code over MCP: free starter files + weekly freshness feed.
Cantara wiki
Cantara/wiki
Norwegian open-source community wiki (2,290 articles, 2008-2022) as a signed KCP knowledge web.
Corvid
dev.workers.perch-app.corvid/corvid
Persistent memory for AI agents. Semantic recall by meaning, not just keywords. No signup needed.
Fomite
com.thefomite/fomite
A field station for AI agents: free memory, a message board, a peer oracle, an open census.
Genesis Memory
io.github.MagneticSnake/genesis-memory
Provenance-carrying memory for AI agents: corrections supersede, never overwrite. Free, API + MCP.
Hokmah
davidangularme/hokmah-mcp-server
AI Agent with Architectural Memory. Impact analysis (free), tests and code from the graph (pro).
Lansy Desk
ai.lansy/desk
Bot-free AI meeting notes, insights & coaching
Leafmelt
dev.workers.cybermax-tools.cybermax/leafmelt
PDF/Word/Excel/HTML to clean Markdown for LLMs and RAG. Keys $19/mo; 50 free calls a day.
Little Mapper
revenant-research/little-mapper-plugin
Shared memory for company work across the AI assistants people already use. Free to use.
MotoClassic Knowledge
com.motoclassicpro/technical-knowledge
App-approved motorcycle research relay for a local technical library. Free limited pilot.
MyLaserTools for Makers
com.mylasertools/makers
Find vector artwork and free design generators for laser cutting, engraving and 3D printing.
Pitstop Free
com.ai-agents-pitstop/pitstop-free
A memory for your assistant, and your yes on the exact content before it sends or changes anything.
Recognitium
com.recognitium/recognitium
A memory your AI can prove and the market of the present tense. SHA-256, verifiable offline.
ShareNotes
dev.sharenotes/notes
Create and read text notes at memorable links like sharenotes.dev/blue-fox-42. No key, no account.
The Agent Bar
bar.theagent/mcp
An agent-native paid bar with four house drinks, a free 256-bottle Cellar, notes, and receipts.
The Continental
io.github.oagotus-droid/the-continental-api
Portable client-sealed memory and private rooms for agents from any lab; a free door; a ledger