Send transactional email through SMTP Senpai by MailSenpai, the EU-hosted SMTP relay and email API: API client (send, events, suppression list), webhook signature verification and an ActionMailer delivery method (:mailsenpai).

Ruby gem for integrating with the Mailshake email outreach API. Supports campaigns, recipients, activity tracking, leads, team members, senders, and push webhooks.

MakeId is a collection of record Identifier generators

Provides Jira Cloud comment CRUD, converts Markdown to Atlassian Document Format, and optionally uploads allowed remote images as Jira issue attachments.

Ruby library for MassProspecting API.

A Model Context Protocol server for Mathpix OCR, over stdio or Streamable HTTP (bearer-token auth). Exposes tools to convert images and PDF/DOCX/PPTX documents to LaTeX and Markdown, with descriptive errors and optional file output for large results.

Ruby gem that mirrors the MAX Bot API Go client.

Parse MBOX files and export email data into CSV format

A Ruby gem that provides tooling for connecting to and inspecting MCP servers, allowing you to list and execute tools, resources, and prompts with JSON output.

Memplify reporter for memory_profiler

Interactive CLI that renders {{placeholder}} messages against a CSV contact list and dispatches through pluggable services scoped by delivery method (email, sms).

Miscellaneous tools to work with Metanorma output.

So meta

Micky makes simple HTTP requests (GET/HEAD), follows redirects, handles exceptions (invalid hosts/URIs, server errors, timeouts, redirect loops), automatically parses responses (JSON, etc.), is very lightweight, and has no dependency.

A minimal smtp server.

Quickly and easily connect to Mindee's API services using Ruby. This lite version omits heavy image and PDF processing dependencies.

A minimal Certification Authority, for use in specs

A very simple client class that lets you log in to the Bluesky API and make any requests there.

mo2tex transforms a Monte Ore calendar into a LaTex table, or an ical file, or a pic table

Ruby client for Mobiscroll Connect, the calendar connectivity layer for scheduling products. Google Calendar, Microsoft Outlook, Apple Calendar and CalDAV through one API, with OAuth 2.0 and webhooks. Backend only — works with your own UI.