"Creating a Custom Local Knowledge Base" matching MCP servers:

Production MCP server for data annotation workflows, exposing six tools backed by AWS S3, DynamoDB, and Slack with JWT auth, rate limiting, and exponential-backoff retries.

Custom MCP server for Gmail integration, enabling email listing, reading, searching, and sending via natural language.

An MCP server that enables AI agents to pause and request human approval or information via Slack, Telegram, or macOS dialogs before proceeding with actions.

Enables interaction with Feishu (Lark) via MCP for sending messages, managing calendar events, searching documents, and reading/writing bitable records.

Provides over 1,000 creative ways to decline requests across four categories (polite, humorous, professional, and creative). The MCP server wraps a REST API to help users craft professional rejections through natural language interactions.

Connects AI agents to anonymous strangers for asking and answering questions in character.

Local stdio MCP server that mirrors the public Gmail MCP server tool surface while calling the Gmail REST API directly, enabling email management tasks like creating drafts, searching threads, and managing labels.

A read-only MCP server that lets AI search and read both sides of a user's own LINE Desktop chat history on macOS using local database snapshots, without needing a LINE Official Account or altering unread state.

A read-only MCP server that lets AI search a user's own LINE Desktop chat history on macOS, providing tools to list chats, retrieve messages, and search conversations directly from the local encrypted database.

Enables Claude to read and search WhatsApp messages, transcribe voice notes, and analyze images locally through a read-only bridge.

A read-only MCP server that enables searching and extracting to-dos from local macOS WeChat chat databases. It decrypts and queries local WeChat data without sending messages or modifying databases.

Reads the local Microsoft Teams (v2) message cache and exposes it over MCP, enabling AI assistants to list accounts/conversations and search/read messages without Graph API or network.

A local-first MCP server that lets agents search and summarize a user's own WeChat history, with stable pagination, bulk chat workflows, unread/event queries, and gated enrichment tools.

Connect ChatGPT, Claude, Cursor, Grok and other MCP clients to Mail, Calendar, iMessage, Teams, Slack, WhatsApp, Outlook, OneDrive, Google Drive and Office on macOS 13+ and Windows 10+. 188+ tools on macOS; Windows has its own catalog. Tools run on your computer with no API keys; your AI provider still receives the content you ask for.

Enables MCP clients to search, read, and inspect Apple Mail on macOS, including conversations and attachments. It can create new, reply, reply-all, or forward drafts, but cannot send or modify existing messages.

Connect Claude to your personal Telegram account via MTProto to read messages, search chats, send replies, forward files, and more using your real account.

Enables MCP clients to interact with user-approved KakaoTalk chat rooms locally on Windows, including reading recent messages, observing new events, and sending replies only after explicit user approval, with sending and auto-reply disabled by default.

Provides Claude with read-only access to your WhatsApp chat history entirely on your local machine, enabling natural language search, summarization, and retrieval of messages without sending data to the cloud.

Enables MCP-capable AI clients to search both sides of a user's own macOS LINE Desktop chat history — listing chats, reading messages, searching text, and pulling recent activity from local read-only database snapshots. It never sends messages, marks chats read, clicks through the UI, or requires a LINE Official Account.

Enables local automation of classic Outlook for Windows via COM, allowing email search, folder listing, calendar leave block creation, and contact/recipient management without needing cloud APIs or admin approval.