Knowledge & Memory MCP servers

Hindsight: Agent Memory That Works Like Human Memory - Built for AI Agents to manage Long Term Memory

Universal AI bridge for Obsidian vaults using MCP. Provides safe read/write access to notes with 11 comprehensive methods for vault operations including search, batch operations, tag management, and frontmatter handling. Works with Claude, ChatGPT, and any MCP-compatible AI assistant.

MCP server for Obsidian vaults — read, write, search, and edit notes via the Local REST API plugin.

The private, owned conversation-memory layer for AI. Record, transcribe, and search every meeting.

Privacy-first document search server running entirely locally. Supports semantic search over PDFs, DOCX, TXT, and Markdown files with LanceDB vector storage and local embeddings - no API keys or cloud services required.

Local-first persistent project memory for AI coding agents across MCP clients and sessions.

Butterbase MCP server — manage your backend: schemas, auth, functions, storage, RAG, deploys.

Official DeepSeek MCP server for chat, completion, model listing, and balance endpoints.

Zero-config persistent memory for AI agents with local SQLite. Mind Palace web dashboard, time travel (rewind/replay sessions), agent telepathy (cross-client memory sharing), code mode templates, morning briefings, and progressive context loading. 25 tools, 6 resources, 4 prompts.

MCP server enabling AI clients to interact with any MediaWiki wiki through standard tools

Session memory for coding agents: local-first recall, drift detection, on-device inference.

Ingest anything from Slack, Discord, websites, Google Drive, Linear or GitHub into a Graphlit project - and then search and retrieve relevant knowledge within an MCP client like Cursor, Windsurf or Cline.

Auditable context control plane and MCP server for AI coding agents. Compresses context 70–95% (BM25 + entropy + dep-graph knapsack), stabilizes prompt prefixes for provider cache discounts, routes easy tasks to cheaper models (RAVS Bayesian router), and verifies answers locally with WITNESS hallucination guard (0.844 AUROC, $0, 3 ms). MemoryOS adds local budget-aware working/episodic/semantic memory with decay, safety scanning, and durable persistence. 38 agent integrations (Cursor, Claude Code, Codex, Aider, and more). Ships as MCP server (entroly serve), HTTP proxy, or Python/Rust library. Apache-2.0, local-first. pip install entroly

Persistent, compounding memory for AI agents across sessions. Uses the Intelligent Distance Protocol to surface the most contextually relevant past memories. Five tools: sessionstart, remember, recall, check, sessionend. npx agent-recall-mcp

Correction-first agent memory. Precision KPI tracks if agents heed warnings. 5 layers, local-only.

Search Obsidian vaults with hybrid full-text, fuzzy, semantic, and graph retrieval.

MCP server for Yuque — expose your knowledge base to AI assistants.

Local-first workflow memory for AI agents. screenpipe lets MCP clients search selected screen, audio, app, and meeting context and turn real work into cited notes, SOPs, workflow reports, and automation candidates.

Automatic project memory for Claude Code. Also works with Cursor and Codex.

Local-first document management and semantic search for AI coding agents

Cognitive memory for AI agents with Hebbian learning, 3-tier architecture, and knowledge graphs. Single 15MB binary, runs offline on edge devices.

Manage scoped DocsMint documents, folders, categories, search, GraphRAG, and indexing through MCP.

Give AI agents instant, private access to your personal knowledge base. First source: Zotero.

Universal persistent memory for AI coding tools. Semantic code search, knowledge graphs, impact analysis, and decision tracking. 90.0% on LongMemEval-S. Works across Cursor, Claude Code, Windsurf, and any MCP client. npx -y @contextstream/mcp-server

Transform 17 source types (docs, GitHub repos, PDFs, videos, Jupyter, Confluence, Notion, Slack/Discord) into AI-ready skills and RAG knowledge. 35 MCP tools for scraping, packaging, enhancing, and exporting to vector databases (Weaviate, Chroma, FAISS, Qdrant). Supports 16+ target platforms.

Reasoning-based RAG system for chatting with long PDFs. Supports local and online files.

Persistent coding memory across sessions, machines and teammates, with memory search, optional sync, project sharing and automatic capture.

Self-hosted plain-markdown knowledge base with a built-in MCP server. Lets Claude Desktop, Cursor, and any MCP client search, read, create, edit, tag, and template notes — same vault that powers the web UI. Pure-stdlib client, no extra deps, MIT-licensed. Can run in Docker.

Use GitHub Gists to manage and access your personal knowledge, daily notes, and reusable prompts. This acts as a companion to https://gistpad.dev and the GistPad VS Code extension.

Decision memory for Cursor: cited Decision/Rejected/Constraint by file path.

The everything Zotero MCP server — Web API v3 + local API, safe writes, citations, search.

A connector for LLMs to work with collections and sources on your Zotero Cloud

Persistent intelligence infrastructure for agentic development that gives AI coding assistants cumulative memory and pattern learning. Hybrid TypeScript/Rust implementation with local-first storage using SQLite + SurrealDB for semantic analysis and incremental codebase understanding.

Self-hosted decision memory for AI coding agents. Passively captures architectural decisions with the alternatives you rejected (structured rejected[]), then warns the agent before it re-proposes a rejected approach. Postgres + pgvector; cross-tool across Claude Code, Cursor, Copilot, and Codex. Install: npx robrain up && npx robrain install.

Find relevant Smart‑Thinking memories fast. Fetch full entries by ID to get complete context. Spee…

Search, read, annotate, and add to your Zotero research library, local or web.

Deterministic, offline, read-only ADR decision memory for coding agents. No model or network calls.

Long-term memory for AI agents (Claude Code/Desktop, Cursor, ChatGPT, Codex, OpenClaw) backed by a local Obsidian markdown vault. Hybrid retrieval (BM25 + ML embeddings + BGE reranker, RRF-fused), HNSW + int8 quantization, agentic RAG (HyDE + sub-question), GraphRAG-light (Louvain wikilink community detection), standalone Obsidian Bases, PDFs + Tesseract OCR. 46 tools, 19 MCP prompts, MIT, SLSA L2, zero cloud calls during serve. npx -y @oomkapwn/enquire-mcp serve --vault

Give AI agents access to your Obsidian vault via local files or Self-hosted LiveSync.

Apple Mail, Calendar, Contacts, Reminders, Notes, Messages and Safari via AppleScript or iCloud

One-line installable MCP server that adds reusable customization elements — personas, skills, templates, agents, memory, and ensembles (collected customization tools) — to any MCP Client application. Dynamic permissioning for safe AI operations, a robust validation architecture, versioning, and a public collection of shareable content. Install: npx @dollhousemcp/mcp-server@latest --web.

Pre-action gates that prevent AI coding agents from repeating known mistakes. Captures explicit feedback, auto-promotes failures into prevention rules, and enforces them via hooks.

Local-first AI PKM memory server for coding conversations. Imports Claude Code, Cursor, Codex CLI, Trae, and GitHub Copilot chats into notes, semantic search, tag graphs, Markdown exports, and reusable MCP memory. npx -y chatcrystal mcp

MCP server that interacts with Obsidian via the Obsidian rest API community plugin

Local index and hybrid search (SQLite FTS5 + on-device vector KNN) over your AI coding-agent conversation history across 11 tools (Claude Code, Codex, Cursor, and more). Exposes searchthreads, searchcurrentproject, recentthreads, and getthread so any agent can recall its own past work.

Feature-complete Obsidian vault MCP server with 23 tools and 3 resources. Full-text search, note CRUD, frontmatter queries, tag management, backlinks, graph traversal (BFS up to 5 hops), orphan/broken link detection, and canvas support. Auto-detects vault, path traversal protection, MIT licensed.

Local MCP server that shows AI agents which patterns your team actually uses, what files a change will affect, and when there is not enough context to trust an edit. 30+ languages, fully local.

PMX Canvas is a shared board where you and your AI agents collect and present the data and evidence behind your work. Curate that material into context for your agent's next step, then bring the results back onto the board to review and build on. You both add and edit material on the same board, in real time. Pin context to focus input and output.

Persistent memory + FTS5 full-text search for Claude Code conversation history. Indexes /.claude/projects/ JSONL into SQLite, exposes 10 MCP tools (store/recall/search memories, list sessions, get summaries) plus prompts. Includes a web UI for visual exploration with themes and exports. Works with Claude Code, Cursor, Codex, Windsurf, and any MCP-compatible client. npm install -g @kunwarshah/claudex

First & only persistent project context MCP. Provides .faf (Foundational AI-context Format) Project DNA with 33+ tools, Podium scoring (0-100%), and format-driven architecture. Official Anthropic Registry. 10k+ npm downloads.

Graph memory that dreams: Neo4j knowledge-graph memory for AI agents with hybrid search

Persistent, local-first AI memory: a semantic knowledge graph of plain Markdown files that humans and LLMs both read and write. Works with any MCP client, with optional cloud sync and team workspaces.

An MCP server implementation that provides tools for retrieving and processing documentation through vector search, enabling AI assistants to augment their responses with relevant documentation context

Local-first persistent memory for AI coding agents.

MCP server for Obsidian vaults — hybrid search, notes & files, memory, tasks, link graph, OAuth-protected.

Persistent project context for xAI Grok. IANA-registered .faf format.

MCP server for reading Simplenote notes across macOS, Linux, and Windows