Notes & Knowledge MCP servers

Repo-native task continuity for coding agents: a reviewed task-state ledger of decisions, dead ends, evidence and checkpoints that later sessions resume from.

Governed MCP runtime for the Apple ecosystem, available on macOS for Notes, Mail, Calendar, Reminders, Shortcuts, and more.

Neuroscience-inspired local agent memory that stores episodes, consolidates knowledge over time and builds a personal knowledge graph with semantic recall.

Returns active decision records for a path before an agent edits it: constraints, ruled-out alternatives and warnings, stored as git trailers and notes.

Human-governed memory in local, domain-separated vaults with hybrid retrieval; also reads other coding agents' output. Requires the Mnemosyne OS desktop app.

Shared community repository of insights, decisions, warnings and patterns with semantic search, a 3D interactive globe and automated content moderation.

Local workspace memory: indexes Markdown, CSV and session logs into a vector store with hybrid search, cross-session memory and knowledge graph visualization.

An LLM Wiki for Claude Code, in your Obsidian vault.

Search repos, fetch AI-generated wiki docs and ask questions about any open-source repository via codewiki.google.

Event-sourced agent memory on a hash-chained log with an embedded Kuzu temporal knowledge graph, salience-based forgetting and review-gated consolidation.

Create, read, update and search notes in local Obsidian vaults via filesystem access.

Cerefox — user-owned shared memory for AI agents. CLI + stdio MCP server + web UI + ingestion for a knowledge base on your own Supabase project (or fully self-hosted with Cerefox Local).

Graph-native Obsidian vault access: search, backlinks, n-hop neighborhoods, paginated reads and safe partial and bulk edits with dry-run and rollback.

Turns your task manager into agent memory with hybrid retrieval over TickTick or an Obsidian vault, without a separate vector database.

Git-backed, Obsidian-compatible Markdown second brain for agents: search ranks live notes above superseded ones, with per-agent tokens and a git audit trail.

Bitemporal agent memory with deterministic fact supersession, point-in-time recall, memory lineage, conflict tracking and tamper-evident audit trails.

Self-hosted persistent agent memory with entity resolution, PII detection, AES-256-GCM encryption at rest and hybrid search.

On-demand BM25 search over private project docs for coding agents, keeping docs out of public repos.

Search, read and edit your Amber Notes: folders, checklists, tables and trackers.

Cross-LLM communication and memory sharing so different AI models can collaborate and share context across conversations.

Self-hosted Obsidian server: semantic and full-text search on PostgreSQL/pgvector, wikilink graph traversal, atomic note CRUD and a self-describing vault guide.

Local Obsidian vault access working directly on Markdown files without the Obsidian app or plugins, with read-only mode, backup-on-write and path isolation.

Persistent memory and codebase context for coding agents: FAISS vector store, AST symbol index, knowledge graph, episodic journal and cross-agent handoff.

Local-first cross-agent memory in one SQLite file with a layered structure, Ebbinghaus-style forgetting and detection of code drifting from past decisions.

Persistent local memory for Claude Code: indexes all sessions verbatim into SQLite and ChromaDB for semantic recall across your history, with no API calls.

Self-hosted email search: syncs IMAP mailboxes into PostgreSQL to list, search and read mail and ask cited questions across the archive.

Local-first long-horizon agent memory: source-traceable recall, belief revision, selective forgetting and a guard against memory-driven destructive actions.

Correlates failed shell commands and their exit codes with whatever later fixed them, alongside git diffs and docs, stored locally in SQLite.

Full-text and semantic search over Claude Code transcript history, with exact thread recall and durable remembered facts in local SQLite.

Local deterministic knowledge graph on redb with no LLM or embedding calls, BLAKE3 state hashing and canonical export for byte-identical audits.

Read notes and tags from the Bear note-taking app directly from its SQLite database.

Local-first memory for coding agents: hybrid vector/BM25 retrieval with reranking, knowledge graph, session checkpoint/resume and multi-scope isolation.

Local semantic search and RAG over Apple Notes with on-device embeddings, full CRUD, folder management and fuzzy title matching.

Get Confluence data via CQL and read pages.

Reasoning via a DAG thought graph with multiple strategies (dialectic, analogical, abductive and more), stuck detection, confidence scoring and self-critique.

Create, read, search, and organize your Drafto notes and notebooks.

Read your Mac's Calendar, Reminders, Notes, Contacts and more via Shortcuts. Read-only, local.

Git-native project memory for coding agents: Markdown in your repo, reviewable staged updates, secret/PII-safe and branch-aware, without cloud or vector DB.

Turn any REST API into a hosted MCP server, with ready-made public servers for GitHub, Stripe, Slack, OpenAI, Notion and more.

Five-level AI collaboration system with persistent local-first memory via MemDocs and anticipatory capabilities.

Access Obsidian vaults via Local REST API - read, search, and interact with notes

Local-first personal AI ops layer. Shared verbatim memory across your agents (Claude Code, Cursor, OpenClaw, Hermes, Obsidian, Telegram) in one SQLite + FTS5 corpus — plus a coordination layer where any of your agents can delegate tasks to any other. Sear

Structured, persona-driven sessions for interview preparation, personal reflection and coaching, with timers and performance evaluation.

Pull Deep Memory from across your Claude Code Sessions — when you need it.

Watches git repos and builds a temporal knowledge graph of modules, symbols, decisions and open problems via Graphiti and Neo4j, served to AI coding agents.

XMemo: user-owned agent memory to save, search, recall and manage scoped memories across AI tools.

Read and write Apple Notes with bidirectional Markdown conversion: SQLite queries for listing and search, AppleScript for full CRUD.

ElevenLabs Conversational AI: agents, calls, conversations, and knowledge base for MCP hosts