Knowledge & Memory
Persistent memory storage using knowledge graph structures. Enables AI models to maintain and query structured information across sessions.
MCP ServersBrowse all →
AlicenseAqualityAmaintenanceProvides a read-only MCP interface to the Santismm Knowledge Platform, offering tools to retrieve curated content on engineering, AI patterns, architectures, governance, and agent taxonomy with structured output in English, Spanish, and Portuguese.63010 npm1MIT
Metisofficial
AlicenseAqualityAmaintenanceMetis gives AI agents expert know-how that named reviewers have approved, and only where its recorded conditions match the situation. High-risk situations go to a person. When an agent sees practice depart from procedure, it can send the expert one short question. Every retrieval is recorded on a hash-linked evidence chain.61072 PyPI2Apache 2.0
WhisperGraphofficial
AlicenseAqualityCmaintenanceSelf-hostable MCP server for WhisperGraph — a graph of 7.39B nodes / 39B edges mapping DNS, BGP, GeoIP, WHOIS, and threat intelligence. Six read-only tools (Cypher query + schema introspection + threat assessment), six resources, eight investigation prompts. stdio and Streamable HTTP transports.846 npm1Apache 2.0- AlicenseAqualityBmaintenanceA knowledge-based MCP server for Ozon sellers, enabling AI agents to search a 42-lesson Chinese operations playbook and discover/call over 460 Seller and Performance API methods for real business actions.6152MIT

@cogniahq/mcpofficial
AlicenseAqualityCmaintenanceEnables AI assistants to query end-to-end encrypted memories from Cognia workspace via MCP. Supports search, retrieval, and action execution against connected services like Slack, Notion, and GitHub.59 npmMIT- AlicenseAqualityAmaintenanceGraph-MIND records every conversation you have with Claude Code, Codex and Claude Desktop, word for word, in a store on your own PC. When a question depends on the past, the model you are using calls Graph-MIND over MCP and gets back a few thousand tokens of the conversations that answer it.473,474 PyPI4AGPL 3.0
- AlicenseAqualityAmaintenanceConnect AI assistants to your Gramps Web family tree. Search and edit genealogy records, explore ancestors, descendants, relationships and timelines, and read document scans with vision-capable models. Includes guided research workflows, source citations, read-only mode, and privacy-aware media previews. Install with Docker or a Claude Desktop bundle.63114AGPL 3.0
- AlicenseAqualityBmaintenancePath-scoped team memories, rules and skills for AI coding agents.301MIT

Remnant Readofficial
AlicenseAqualityAmaintenanceSearch reusable technical experience from AI agents, inspect evidence and limitations, and discover public agent Trust Passports through seven anonymous read-only MCP tools. Apache-2.0 integrations, examples and documentation connect to the separately governed hosted Remnant service. Agent OAuth and Candy are separate surfaces.7Apache 2.0
SPOKEAgentofficial
AlicenseAqualityBmaintenanceA structure-aware MCP server for querying the SPOKE biomedical knowledge graph, enabling entity resolution, schema introspection, path finding, and safe Cypher queries for biomedical knowledge inference.5Apache 2.0
debugbase-mcpofficial
AlicenseAqualityDmaintenanceEnables AI agents to search and submit solutions, ask and answer questions, share findings, and vote on content via DebugBase's collective knowledge base.118 npmMIT- AlicenseAqualityDmaintenanceAdds persistent memory to AI assistants by connecting to the Memphora cloud platform, allowing them to store and recall facts across conversations. It enables tools for searching memories, extracting insights, and maintaining long-term user context and preferences.524 PyPI3MIT

Tiger Memory MCP Serverofficial
AlicenseAqualityDmaintenanceA simple memory system that allows LLMs to store and retrieve information via the Model Context Protocol.430Apache 2.0- AlicenseAqualityBmaintenanceLocal-first memory for coding agents. Discovers the memory, instructions, and rules Claude Code, Codex, and Cursor already wrote on your machine, combines them into one canonical Markdown tree, and serves grounded, cited recall through tools like ask_memory and canonical_memory.20197 PyPI129MIT
- AlicenseAqualityBmaintenanceOfficial MCP server connecting hosts to a June knowledge graph for agent memory, search, and cited answers.10235 PyPI1MIT

spirrow-prismindofficial
AlicenseBqualityBmaintenanceMCP server that integrates Google Drive, RAG, and memory services for context-aware knowledge management, enabling session, project, document, catalog, and knowledge operations for AI assistants.46MIT- AlicenseAqualityBmaintenanceCheckpoints Claude Code session states locally to survive CLI crashes, token limits, and /clear resets without context rebuilds.122380 npmMIT

graphite-mcpofficial
AlicenseAqualityCmaintenanceMCP server for the Graphite Financial Knowledge Graph, enabling natural language queries about companies, supply chains, executives, regulations, and patents via MCP-compatible clients.7MIT- AlicenseAqualityAmaintenanceMarrow is an MCP server that solves agent amnesia. It gives coding agents persistent task tracking, versioned docs, and semantic search over your actual source code (via a tree-sitter powered background indexer) — so a new session, or a different model entirely, can pick up exactly where the last one left off. Built for multi-agent, multi-session software delivery.620247MIT

ecoclaw-mcpofficial
AlicenseAqualityDmaintenanceManages local AI skills for Claude Desktop, enabling listing, running, tuning, forking, contributing, and updating skills stored as markdown files. Customizations are persistent and survive updates.9MIT
solucortex-mcpofficial
AlicenseAqualityAmaintenanceEnables MCP-compatible AI agents to connect to SoluCortex projects, recall relevant technical decisions, conventions, risks, and architecture before working, and record new memories afterward.445 PyPIMIT- AlicenseAqualityBmaintenanceOfficial Telys MCP server: private, on-device AI memory and retrieval powered by native Mojo kernels. 19 tools: memory CRUD, semantic + BM25 search, single-key filters, compaction/IVF/tuning and self-refreshing repo auto-indexing. Stdio. Introspection needs no credentials; execution requires a one-time free telys login. Source: packages/telys-sdk/telys/mcp.py. Registry: io.github.thyn-ai/telys.19Apache 2.0
- AlicenseAqualityBmaintenanceGives your AI persistent memory across conversations. Stores facts automatically, finds them by meaning using hybrid search with query expansion, and organizes everything into topics without manual tagging.181MIT

lorg-mcp-serverofficial
AlicenseAqualityAmaintenanceIntelligence archive for AI agents. Contribute prompts, workflows, and insights to a permanent, cryptographically verifiable knowledge base. Agents earn public trust scores based on adoption and peer validation.29203 npm5MIT- AlicenseAqualityBmaintenanceA plain-files brain template and MCP server that lets models read owned, portable working memory via list, read, and grep-style search tools.318 npmMIT

JauMemory MCP Serverofficial
AlicenseAqualityCmaintenanceProvides persistent memory capabilities for AI assistants, enabling storage, recall, and analysis of information across conversations with intelligent memory management.25202 npmMIT- AlicenseAqualityBmaintenanceSelf-hosted knowledge base that gives AI agents persistent memory over MCP. 18 tools covering notes, folders, tags and trash; hybrid search combining pgvector embeddings with bilingual full-text ranking via RRF; [[wikilink]] graph traversal and backlinks; document import from PDF, DOCX and EPUB. Connects over Streamable HTTP or stdio, with Bearer-token or OAuth auth.24185AGPL 3.0
- AlicenseAqualityBmaintenanceScoped, low-latency persistent memory layer for AI agents, Cursor, and Claude Code over Model Context Protocol with sub-50ms hybrid search.7MIT

LogicMem MCP Serverofficial
AlicenseBqualityDmaintenanceProvides persistent memory, reasoning, agent-to-agent sharing, and immutable audit trail for AI agents via the Model Context Protocol.121MIT
never4ga-mcpofficial
AlicenseAqualityAmaintenanceEnables AI agents and MCP clients to start each session with a pre-assembled context pack of the project's Markdown notes, decisions, rules, Git and tracker state, and to write progress and decisions back as dated logs. Context is gathered locally by lookups and queries rather than model calls, so different tools like Claude Code, Codex, and Antigravity share the same memory without spending tokens on retrieval.1518 PyPI1Apache 2.0
MCP ConnectorsBrowse all →
Shared project memory for AI coding agents: decisions, lessons, risks and tasks in one graph.
Memory for AI agent teams across tools, sessions, repositories, and teammates.
Hosted agent memory that learns from outcomes, with shared rooms. No key: mcp.mnemoverse.com/mcp
Known MCP tool-call failures and workarounds verified by reproduction.
Engram is a persistent, long-term memory layer for AI agents and assistants. Claude, ChatGPT, Grok, Cursor and any MCP client share one memory, stored as plain markdown notes: your knowledge base, second brain and AI context in one place. No extraction step: the memory is the note itself, so you can read exactly what your AI remembers and fix it. Edit your memory in Obsidian (real-time sync), the web app, or on your phone. Hybrid keyword + semantic search (RAG over your notes) finds exact strings like error messages, config keys and IDs. Remote MCP server over Streamable HTTP with OAuth 2.1; notes encrypted at rest. Https://engram.page https://youtu.be/rwnPeZ-8Lqo?is=NI-N7BduydGAiZlF https://github.com/engram-app/Engram
Enhanciar is a company brain for engineering teams. It ingests your GitHub repos, Slack, Notion, Google Docs, Jira/Linear and PDFs into a cited wiki and knowledge graph, and answers questions from any MCP client with every claim linked to the source line, message or page. Tools: query (cited Q&A), search_wiki, get_page, list_pages, get_graph, get_process_map, impact (blast radius of changing a file or function), list_repos, list_skills/get_skill, propose_action/list_proposed_actions (draft Jira/Linear/Slack/calendar actions for human approval). BYOK — bring your own model key. Early access: join the waitlist at https://enhanciar.in and create an API key in Settings.
ESG knowledge base for AI agents: hybrid search, glossary, frameworks, industries, graph traversal.
Constitutional AI kernel with 13 MCP tools, 888_JUDGE verdict pipeline, and VAULT999 ledger.
Governance and grounding layer for engineering teams running AI coding agents (Claude Code, Cursor, Codex). Grounds agents in your codebase's knowledge graph, and adds session audit, policy controls and cost/token visibility.
Sanskrit scripture search: Mahabharata, Upanishads, Gita; cited verses, honest no-answer.
Registered agents sell what they measured, anyone buys: validated knowledge and signed datasets. No sign-in needed to connect: searching, dataset listings and free reads work anonymously. Sign in (OAuth) only for selling and account tools.
Shared second brain for any AI with agent permissions
Recipe search, ingredient matching, nutrition filters and a private cookbook for any AI agent.
Avoid redundant expensive validation. CHECK recent evidence; OBSERVE fresh independent results.
Durable identity and memory for AI agents, anchored on the Emercoin blockchain.
Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.
Corrobyte gives AI chats and agents persistent context within private projects. Authorized connections can read project briefings, contribute attributed updates, coordinate tasks, and leave handoffs through MCP or REST. Owners manage project access through the portal. Tool discovery is public; project operations require credentials and appropriate permissions. Available in private beta.
Bounded KVP, RAG search, and wipe receipts for agent jobs over remote MCP
The company brain for your AI agents: how your business works, from the systems you already use.
Your why agent, the infra agent for your fleet. Your agents work from what you decided, and why.