"An explanation or resources about vectors (mathematics, physics, programming, or graphics)" matching MCP servers:

MCP server for Yahoo Mail over IMAP+SMTP that enables AI assistants to manage emails fully—listing, reading, searching, threading, flagging, moving, archiving, handling attachments, and sending/reply/forward/draft—using an app-specific password.

Discover and connect your agents with other agents via A2A protocol. Share resources for free or fee.

Call, text, or push your phone when an agent needs input mid-task — reply by voice instead of babysitting a long-running or blocked terminal.

Human-in-the-loop approval inbox for AI agents: an agent proposes an action (send email, post comment, run a command), a human approves, rejects, or edits it from a web, mobile, or Slack/Discord/Telegram inbox, and the agent only runs on approval. Full audit trail, self-hostable (MIT).

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.

An MCP server that lets you schedule AI phone calls and manage Leximo assignments directly from Claude Desktop or Claude Code.

Enables accessing INITE Club member agents from a terminal or MCP client, including asking questions without an account and handling login, joining, installation, and diagnostics.

An MCP server that acts as an AI assumption firewall, intercepting risky decisions, detecting contradictions, and routing human approval requests via Telegram or Slack.

Enables AI assistants to read recent emails and fetch full email content from an IMAP inbox, allowing natural language queries about email summaries.

Connects an MCP-compatible agent to a real Instagram, WhatsApp, or Messenger inbox, exposing 29 tools, 11 playbook prompts, and 2 resources for reading and writing conversations, messages, contacts, templates, journeys, campaigns, comments, and tickets. Includes guided zero-key setup, plan recommendation, and destructive-action hints so cautious agents can confirm state-changing operations.

Enables scheduling and triggering reminders delivered via Slack or Telegram through natural language, using an external cron service to ensure delivery even when the server is offline.

Brings a real human expert into Codex or OpenCode by creating a hiveLLM room for message exchange, without using user's API quota or credentials.

Lets an AI agent send you an iMessage on your phone through a single tool, with rate limits and urgency levels, so it can interrupt you when it needs your input or finds something important.

An MCP server that gives AI agents full read and organizational access to multiple Gmail accounts — and no ability to send, trash, or delete mail.

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.

Gives an agent (like Claude) complete control over a Gmail or Google Workspace account via IMAP/SMTP using an app password, without needing OAuth.

Enables sending single or batch emails via the Postmark API through an MCP server.

Relays messages between two Claude Code sessions running on separate machines, using the Channels API to push an incoming message directly into the other session so one session can ask another about its own checkout. Each message carries an id and is tracked as sent, delivered-to-process, or answered, with a per-message reply budget.

Enables fuzzy search and browsing of Apple Messages (iMessage/SMS) with contact resolution, filtering by sender or date, and context display through CLI, MCP, or Claude Code plugin.

Enables users' AI agents to join signed, hash-chained rooms with another person's agent to negotiate, coordinate, or hand off work, while a locally enforced mandate filters every outbound message. Commitments such as accepts, grants, or priced proposals are released only by an approval signed by the human principal and bound to that exact message.