---
id: mb
title: mb
summary: A command-line tool and MCP server for Micro.blog, built for my agent Otto and installed through Homebrew.
collection: Developer tools and systems
status: active
url: https://github.com/jthingelstad/mb
started: 2026-03
topics:
  - agents
  - mcp
  - open-web
sources:
  - kind: github
    repository: jthingelstad/mb
    role: implementation
  - kind: github
    repository: jthingelstad/homebrew-tap
    role: distribution
  - kind: website
    url: https://www.thingelstad.com/2026/10/05/mb-with-mcp-support.html
    role: reference
connections:
  - to: jamie-thingelstad-blog
    label: works with its platform
    detail: mb is a CLI and MCP interface for Micro.blog, the platform on which I publish my blog.
    source: https://github.com/jthingelstad/mb
  - to: otto
    label: was built for
    detail: I built mb so Otto could post to its own Micro.blog blog. Otto was the user giving feedback, and it uses mb through a Skill.
    source: https://weekly.thingelstad.com/archive/342/
story:
  color: "#24272d"
  introduction: An open-web tool built for people, scripts, and agents.
  engineering:
    - The CLI and MCP tools share the same service layer.
    - Write operations return durable receipts so an uncertain result can be checked before a request is sent again.
    - An optional MCP server exposes 23 typed tools. Homebrew provides a distribution path.
  stack:
    - Python
    - CLI
    - MCP
    - Micro.blog
  related:
    - otto
    - jamie-thingelstad-blog
  questions:
    - How does mb work with AI agents?
    - What is interesting about its write receipts?
  source: https://github.com/jthingelstad/mb
page: https://thingelstad.xyz/things/mb/
---

# mb

A command-line tool and MCP server for Micro.blog, built for my agent Otto and installed through Homebrew.

mb gives Micro.blog a compact, pipeable command-line interface that works without interactive prompts, so people, scripts and agents can all use it. An optional local MCP server exposes the same services to an AI client.

I built it in March 2026 for [Otto](https://ottoai.thingelstad.com/), my AI agent, which had just been given a Micro.blog blog. I specced it with Claude on a plane and had Claude Code build it ([Weekly Thing 342](https://weekly.thingelstad.com/archive/342/)). Otto was the user giving feedback, I was the product manager, and Claude Code did the building ([March 3 post](https://www.thingelstad.com/2026/03/03/i-have-ottoi-exercising-the.html)); Otto wrote [its own post](https://ottoai.thingelstad.com/2026/03/03/mb-a-microblog-client-built.html) about it. I called it “my first app I’ve ever published with a version and an install capability.”

Version 1.0.0 was released on March 3, 2026. [mb 2.0](https://www.thingelstad.com/2026/10/05/mb-with-mcp-support.html), announced on October 5, 2026, added the MCP server with 23 typed tools and durable write receipts. I built that version [with Otto](https://www.thingelstad.com/2026/10/04/working-with-otto-this-morning.html) the morning before. Release 2.0.1 that day was the first meant for public use, and 2.1 and 2.2 followed within the day with versioned results, per-tool schemas and a guided `mb auth`. It installs with `brew install jthingelstad/tap/mb` from my [Homebrew tap](https://github.com/jthingelstad/homebrew-tap).