Notes & Knowledge MCP servers

Search Lenny's Podcast transcripts with YouTube timestamps for product management insights on PRDs, strategy and PM careers.

Persistent memory with SQLite hybrid search (FTS5 and semantic), built-in Qwen3 embeddings and rclone sync across machines.

Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.

Arknights game data via the PRTS Wiki API, with auto-synced operator archives and voice lines for fan-work creation.

Interactive documentation site and MCP (Model Context Protocol) server for the Ignis Framework. Includes a VitePress-powered documentation site with guides, API references, and best practices. Ships an MCP server (CLI: ignis-docs-mcp) with 11 tools for AI

On-demand Obsidian vault access: adaptive context loading, full-text and ranked search, health checks, auto git commits and delegation to cheaper models.

MantisBT MCP server – manage issues, notes, files, tags, and relationships. With semantic search.

Codebase memory for coding agents: a deterministic AST index finds task-relevant files, and in-repo Markdown notes flag themselves stale when code changes.

Persistent identity for AI agents: servers for drives, relationships, semantic memory with decay, working threads, learned patterns, journaling and forecasting.

End-to-end encrypted access to a Standard Notes vault (protocol 004, local stdio only).

Feishu/Lark integration: send messages as the actual user rather than a bot, plus docs, Bitable, wiki, Drive, calendar, tasks and OKRs.

Local persistent agent memory without LLM calls: semantic recall over SQLite with bi-temporal fact tracking.

Two-tier memory (hot cache and cold semantic search) that promotes frequently used patterns, extracts knowledge from Claude outputs and links it in a graph.

Versioned project brain for coding agents, committed with the repo: decisions, corrections, evidence anchors that flag code drift and file-overlap warnings.

Shared decision memory for teams using AI coding agents: captures engineering decisions, ranks them by blast radius and briefs agents before they act.

Local memory middleware: targeted retrieval instead of full-memory loading, rule-based conflict arbitration and one SQLite store shared across coding agents.

Self-hosted semantic memory for an engineering team's tribal knowledge: the decisions and reasoning behind the code, queryable by the team and its agents.

Search, read and discover visual aesthetics such as cottagecore, dark academia, Y2K and goblincore from the Aesthetics Wiki.

Shared memory for Claude, ChatGPT and any MCP client. Read and edit it in Obsidian or the web app.

Local Markdown/Obsidian knowledge substrate for MCP agents with governed memory and hybrid search.

Manage Kanera workspaces, boards, cards, checklists, comments, notes, automations, and reports.

A Model Context Protocol (MCP) server that exposes the official Notion SDK

Self-hosted coordination for agent fleets: shared semantic memory, tasks, agent-to-agent messaging, session handoffs and cross-agent knowledge synthesis.

AI agents run business processes on your business data. Every change is attributed and reversible.

Offline persistent agent memory on SQLite with local embeddings, hybrid semantic and full-text recall, secret detection and contradiction handling.

Obsidian vault access with role-based access control, native search, multi-vault support, pluggable embeddings and SLSA provenance.

Manage Pipedrive CRM deals, persons, organizations, activities, products, projects, tasks, leads, notes and mail, with opt-in delete tools.

Cities: Skylines II wiki, encyclopedia, and mod workflow tools for AI agents.

Persistent codebase knowledge for coding agents: symbols, dependency graphs, co-change patterns and architectural decisions extracted with tree-sitter.

MCP server for Obsidian vaults - AI tools with consistent canonical context. Local-first.

Git-first agent memory: Markdown files are the source of truth, the index is disposable and writes are reviewable commits, with hybrid search and a CLI.

Chat with AI personas of famous founders and investors such as Elon Musk, Warren Buffett and Steve Jobs, based on their voices, frameworks and principles.

Local semantic search across Claude Code conversations with hybrid vector and keyword search, background indexing and per-project selection.

Self-hosted hybrid agent memory on Qdrant combining vector search, BM25, temporal retrieval and an optional Memgraph knowledge graph via rank fusion.

An AI-first personal CRM you run in natural language: contacts, reminders, notes, and more.

Connect AI assistants to your GitHub-hosted Obsidian vault to seamlessly access, search, and analy…

Local memory for coding assistants: watches sessions and injects a compact summary at the start of each new one, stored in a SQLite file.

Shared research cache across agents: reuse answers from verified sources, or save new research for the next developer.

Persistent agent memory in local JSON files: neuron/synapse graph with heat scoring, fact-level search, corrections, secret redaction and team sharing via Git.

Agent memory with a correction channel: supersede or revert stale facts, block restated old values, and prove deletions with signed tombstones.

MCP server for AiWiki — search and read an encyclopedia of AI-coding pitfalls & LLM privacy protection, written from the AI's first-person perspective (bilingual EN/中文).

Self-improving skill memory for coding agents: useful skills are reinforced, unused ones fade; local English/Russian hybrid search, tamper-evident history.

Three-layer agent memory (identity, active, archive) with semantic search, graph relationships and conflict detection.

Hosted ambient memory for AI agents. Retrieve context and save notes via MCP tools with OAuth.

Versioned, structured agent memory storing facts as keypaths with full version history and automatic conflict detection.

Retrieve ONES Wiki content and convert it to AI-friendly text.

Release notes and changelogs from across the web, indexed for agents. Also via CLI and REST API.

Local-first memory for AI coding agents. Memory + CodeGraph + Wiki in one SQLite file.