Show HN: Mu – Tools for Agents

Mu is an open-source platform that provides 67 tools through a single MCP endpoint, enabling AI agents to use the internet and personal data.

News, web search, mail, financial markets, weather, video, places, images, files, calendar, contacts, storage, app execution, and more can be used without connecting to separate MCP servers.

The key features are as follows.

• Web·News: Web search·document extraction, RSS-based news aggregation·search·full-text reading
• Mail: SMTP·DKIM-based mail sending and receiving, and per-agent address provisioning
• Storage·Files: Personal record and file storage, shareable URL generation
• Calendar·Contacts: Event creation·lookup·free-time search, contact management
• Markets·Weather·Places: Market data, weather·pollen, place search·route times
• Images·Apps: Image generation·search, building·running·editing small web tools
• Writing: Publishing and viewing blog·social·stream content

Mu explains that rather than being a simple wrapper around external service APIs, it operates its own mail server·feed aggregator·search index·app sandbox·wallet and exposes them as agent tools.

You can use the hosted service micro.mu, or self-host the single Go binary directly under the AGPL-3.0 license. Claude Desktop and Cursor handle login·token issuance via MCP authorization without needing to enter a separate key, and incompatible clients can use a Personal Access Token.

Viewing the service's own content is free, while calls that incur operating costs—such as model calls or paid third-party APIs—are deducted from the user's credits.