Show HN: Mu – Tools for Agents

mu Tools for agents Overview Mu gives an agent the everyday internet as tools: news, web search, mail, markets, weather, video, places, images, files, calendar, contacts. 67 of them, behind one MCP endpoint. Connect once and your agent has all of them, instead of wiring up a server for each. Real tools, not wrappers. Most things offering an agent tools are a thin layer over somebody else's API. Mu runs the mail server (SMTP with DKIM), the feed aggregator, the search index, the app sandbox and the wallet it hands you. mail_inbox reads a real inbox. db_create writes to real storage. The tools aren't a catalogue of other people's products — they're this instance's own capabilities, exposed. There is also a web app on the same tools, because the operator is a person too. Use it hosted at micro.mu, or self-host the single Go binary — same product either way. Open source, AGPL-3.0. Point an agent at it { "mcpServers": { "mu": { "url": "https://micro.mu/mcp" } } } That's the whole setup. There is no key in that config because there is nothing to paste: the first call gets a 401 pointing at the instance's authorization server, your client walks you through sign-in and keeps the token itself. This is the MCP authorization spec — Claude Desktop and Cursor both speak it. For a client that doesn't, create a Personal Access Token at /token and send it as Authorization: Bearer. curl -X POST https://micro.mu/mcp -H 'Content-Type: application/json' \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' Reading this instance's own content is included. Calls that cost us money to run — a model call, a paid third party — draw credits from your balance. Browse what's there: micro.mu/tools — every tool, grouped by service, with what each call costs. MCP docs for the protocol detail. The tools Area Tools Web web_search · web_fetch — search the web, read a page as clean text News news_list · news_read · news_search — RSS aggregation, full articles Markets markets_list — crypto, futures, commodities, currencies Weather weather_forecast — conditions, forecast, pollen Places places_search · places_nearby · places_eta — points of interest, geocoding, travel time Video video_list · video_search — curated channels, no ads or recommendations Mail mail_inbox · mail_send · mail_address — a real SMTP server with DKIM, and an address per agent Storage db_create · db_get · db_list · db_update · db_delete — per-caller records Files files_put · files_get · files_list · files_share — keep a file, get a URL Calendar events_create · events_free · events_list — schedule, and find when you are free Contacts contacts_find · contacts_add · contacts_list — turn a name into an address Search your own index_search — everything this instance holds for you Images images_generate · images_search Writing blog_* · social_* · stream_* — publish, read, discuss Apps apps_build · apps_run · apps_edit — build and run small web tools Faith islam_today · islam_prayer · islam_qibla · quran · hadith Money wallet_balance — credits, and where to send USDC to top up Agent agent · chat — ask the whole thing a question and let it compose Every tool is also a mu CLI subcommand. Account-scoped tools (mail, storage, index, images, events, files, contacts) need a signed-in caller; mail_send always does, so an unaccountable caller can't spend a domain's reputation. Why the tools are real Each area above is a service — a Go package with typed handlers, registered in-process behind a Go Micro registry. One binary, no external infrastructure. The registry is the single source of truth: a service declares itself once and every surface derives from that declaration. var Spec = service.Spec{ Name: "web", Handler: new(Server), Description: "The open web: search it, read a page from it", Page: "/search", Endpoints: map[string]service.Endpoint{ "Search": {Doc: "Search the web for current information", Cost: wallet.OpW