Knowledge & Memory
Persistent memory storage using knowledge graph structures. Enables AI models to maintain and query structured information across sessions.
MCP ServersBrowse all →
- AlicenseAqualityBmaintenanceRecord development decisions as structured JSON, embed them as vectors via Gemini, and search semantically over MCP. Works with Claude Code, Cursor, Windsurf, and any MCP client.Last updated693229MIT

SubDownloadofficial
AlicenseAqualityCmaintenancePublic MCP wrapper for SubDownload.Fetch YouTube transcripts, search videos, browse channels and playlists — instant YouTube data for your AI workflow.Last updated10132MIT- AlicenseBqualityBmaintenanceA basic implementation of persistent memory using a local knowledge graph. This lets Claude remember information about the user across chats.Last updated1972,52685,290MIT
- AlicenseAqualityCmaintenanceAdds 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.Last updated53MIT
- AlicenseAqualityCmaintenanceShared versioned state for multi-agent AI workflows. An MCP server.Last updated2051MIT
- AlicenseAqualityBmaintenanceAn MCP server that gives AI agents persistent, narrative memory: concepts as nodes, relationships as typed "because" edges, so anything filed can be pulled back by association rather than by address.Last updated2276MIT
- AlicenseAqualityBmaintenanceContextLattice is an HTTP-first, MCP-compatible memory/context/task orchestrator that persists writes and returns fused recall from specialized stores with local-first defaults. Primary URL: https://contextlattice.io/ Install: https://contextlattice.io/installation.html Troubleshooting: https://contextlattice.io/troubleshooting.htmlLast updated63104

lithtrix-mcpofficial
AlicenseAqualityCmaintenanceMemory Consolidation for AI agents across vendors, owners, and time. Provides credibility-scored web search, persistent memory, browser fetch, and a shared Commons pool under a stable ltx_ key that survives session resets and orchestrator changes.Last updated1855MIT- AlicenseAqualityBmaintenanceSelf-hosted personal knowledge graph for Claude that persists across sessions, devices, and tools. Built on Neo4j with local semantic embeddings; OAuth 2.1 lets Claude Code, Claude Desktop, and claude.ai web all hit the same graph.Last updated823621MIT
- AlicenseAqualityCmaintenanceStrata is a native MCP server that gives agents verified intelligence across 22 AI ecosystems. Tools: * get_best_practices * get_latest_news * get_top_integrations * search_ecosystem * find_mcp_servers * Claude-validated content, injection-safe by design * Refreshed twice daily via automated pipeline * Works with Claude Code, Cursor, Windsurf, Cline * Free tier available Site: https://usestratLast updated66712MIT
- AlicenseAqualityBmaintenanceThe most complete Signal MCP server and CLI.Last updated50721MIT
- AlicenseAqualityAmaintenanceMCP Server for Bear note taking app available as Claude Desktop extension or standalone server for any other AI toolLast updated45334190
- AlicenseAqualityAmaintenancePersistent AI memory server with 3-layer hybrid search (vector + FTS5 + keyword), confidence scoring via Reciprocal Rank Fusion, episodic/profile memory, and 16 tools. Zero LLM dependency. Works standalone with Claude Desktop and Claude Code. MIT licensed.Last updated211MIT
- AlicenseAqualityDmaintenanceMason indexes your codebase into a persistent concept map linking features and flows to their implementing files, so AI agents can answer "where is X implemented" without running grep/glob. It also provides pre-edit impact analysis and generates CLAUDE.md files from structured analysis of git history, architectural file sampling, and test mappings.Last updated206196MIT

ODEI MCP Serverofficial
AlicenseAqualityBmaintenanceProvides access to ODEI's constitutional knowledge graph, AI safety guardrails, and EVM smart contract auditing tools. It enables users to query structured domain nodes, validate agent actions, and perform security audits directly through an MCP client.Last updated41- AlicenseAqualityAmaintenanceMCP Server for local knowledge management. Semantic + keywords + tagsLast updated3498MIT
- AlicenseAqualityCmaintenanceShared research cache for AI agents. Caches web research across sessions and users - hit means instant answer from verified sources, miss means your research saves the next dev's tokens. Semantic search with freshness tracking, gap detection, and real-time token measurement via JSONL. Free, open source.Last updated13188AGPL 3.0

mcp-memoriofficial
AlicenseAqualityCmaintenanceWith Memori's MCP server, your agent can retrieve relevant memories before answering and store durable facts after responding, keeping context across sessions without any SDK integration. With MCP, it can: Store stable user facts and preferences after answering using the advanced_augmentation tool Recall relevant memories before answering using the recall tool Maintain context across sessions usLast updated2153MIT
Memsolus MCP Serverofficial
AlicenseAqualityCmaintenanceProvides persistent long-term memory for AI agents through semantic search and automated knowledge graph extraction. It enables agents to store, recall, and reason over facts, preferences, and relationships across multiple conversations and sessions.Last updated142MIT- AlicenseAqualityAmaintenancePortable memory protocol for AI coding sessions. Push the state of a session (goal, decisions, attempts, next step) from one MCP-capable agent and pull it back from another.Last updated6124Apache 2.0
- AlicenseAqualityAmaintenanceSemantic search over 4.6 million text chunks from 20,000+ classical philosophy and humanities works (pre-1928). Covers Aristotle, Plato, Kant, Hegel, Nietzsche and hundreds more. Multilingual: English, German, Latin, French, Italian, Greek, Russian.Last updated83MIT
- AlicenseAqualityAmaintenanceYour AI forgets everything between sessions. Rekindle fixes that. For Claude Code users who lose time re-explaining project context every session.Last updated8104402MIT

mcp-server-qdrantofficial
AlicenseBqualityCmaintenanceThis repository is an example of how to create a MCP server for Qdrant, a vector search engine.Last updated21,390Apache 2.0- AlicenseBqualityCmaintenanceAn agent-neutral MCP server providing SQLite key/value storage, Postgres knowledge base, and Kart task queue functionality. Features SAP/1.0 authorization on every tool call for secure multi-application access.Last updated1111MIT
- AlicenseAqualityDmaintenanceAn MCP server that enhances sequential thinking with meta-cognitive capabilities including confidence tracking, hypothesis testing, and organized memory storage through graph-based libraries and structured JSON documents.Last updated201012MIT
- AlicenseAqualityAmaintenanceMemento is a local-first MCP server that gives AI coding agents durable project memory — facts, decisions, patterns, and architecture notes — so they stop re-learning the same context every session. Runs locally on Node.js 18+ with SQLite storage and optional cloud embeddings; works with Claude Code, Cursor, Windsurf, and any MCP client.Last updated819155MIT

ContextPulseofficial
AlicenseAqualityFmaintenanceLets AI assistants understand what you're working on — current screen content, recent dictation, clipboard, and saved notes — running entirely on your own machine with nothing sent to the cloud.Last updated36AGPL 3.0- AlicenseAqualityBmaintenanceDescription: Persistent memory for AI agents with rollback, audit trails, semantic search, and knowledge graph. Zero-config local SQLite or cloud API. 23 tools, 6 resources, 3 prompts.Last updated2321MIT
- AlicenseAqualityBmaintenancePersistent memory for AI agents with sectioned entries (project/user/context/etc), semantic search, CLI, and per-project scope. Local JSON, zero config, no server required.Last updated1283MIT

Mem0 MCP Serverofficial
AlicenseAqualityFmaintenanceAn MCP server that integrates with mem0.ai to help users store, retrieve, and search coding preferences for more consistent programming practices.Last updated9651Apache 2.0
MCP ConnectorsBrowse all →
Structured knowledge base for AI agent solutions. Search, explore, and retrieve build logs.
A global shared memory bank and knowledge base exclusively for autonomous AI agents. It prevents agents like Cursor and Claude from hallucinating the same bug fixes twice by allowing them to search for and contribute verified solutions. Full installation guide: https://github.com/aiagentoverflow/agents-overflow-mcp-docs
Collaborative engineering KB for a mile-high city. 9 tools, 8 domains, 32 entries.
A self-improving memory layer. Your memory, notes, tasks and goals, remembered everywhere.
Agent Module provides structured, validated knowledge bases engineered for autonomous agent consumption at runtime. Agents retrieve deterministic knowledge instead of scanning unstructured web content — eliminating hallucinated citations in regulated domains.
Deterministic compliance and vertical knowledge bases for autonomous agents. Free 24hr trial.
**ColdState Knowledge Search MCP Server** https://github.com/daniel-coldstate/coldstate-mcp Semantic search over 64.6M knowledge entries — the structured alternative to web search APIs and web scraping for LLM agents. No crawling, no rate limits, sub-3s responses. Cloud-hosted at services.coldstate.ai
Biblical and theological research MCP server. Ask pastoral questions, run academic-grade queries across 2M+ scholarly passages (lexicons, commentaries, church fathers, Dead Sea Scrolls, Talmud), or search raw sources directly. Free, no API key required.
DanNet - Danish WordNet with rich lexical relationships and SPARQL access.
Shared knowledge base for AI agents. Semantic search across agents, no setup required — just a URL.
Shared knowledge base for AI agents. Semantic search across agents, no setup required — just a URL.
Persistent cloud memory for AI agents. Store and search key-value memories across sessions.
Universal Language briefings, FusionGirl context JSONs, service catalog, agent info. x402-enabled.
Content-addressed, ed25519-signed memory of every place on Earth. Apache-2.0, no keys for reads.
Tamper-proof audit trail for AI decisions. 6 tools to record, verify, and export cryptographic proof chains. SHA-256 hash chain, JSON-LD v2 export, public verification.
Fixes payment and delegation boundaries externally. When two agents disagree, DA proves both sides.
Persistent memory and knowledge management for AI agents with semantic search and 50+ tools.
AI-verified knowledge base with trust scoring, temporal facts, and skill cards.
Intelligent context infrastructure for AI teams: knowledge graph, sessions, tasks, documents.
The media memory layer for AI agents and their humans. Your AI client gets 29 tools to search your collection, add items, update ratings, preview music, and find patterns across everything you've read, watched, and listened to.