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​**Due to the popularity of the event, registration is requested at [https://luma.com/dcmahjongg](https://luma.com/dcmahjongg).** We do not use the RSVP system on Meetup. **A drop-in game every Monday at the Martin Luther King, Jr. Central Library, located at the corner of 9th and G Streets NW.** **==> THESE MONDAY GAMES ARE FOR EXPERIENCED PLAYERS ONLY -- THERE ARE NO INSTRUCTORS ON SITE** <== The Gallery Place Metro station (9th Street entrance) is located across the street. Street parking is available. We play in the Great Hall -- as you enter the library, we are on the right of the room. Games begin at 6:00. Games wrap up at 8:00. **If you own a mah jongg set, we encourage you to bring.**

Volunteer with us refurbishing donated bicycles to help us get them back out in the community! This event is open to both new and existing volunteers. No mechanical experience is necessary. Note: The warehouse location is in the alley behind 1502. Enter through the gray door next to a roll-down garage door. If you drive to the location, be sure to park in the street, not in the alleys or parking lots surrounding the warehouse. And wear clothes you don't mind getting dirty with bicycle grease! Please be aware that volunteers under 18 need a parent or guardian to accompany them to their first volunteer experience and sign a liability waiver, while volunteers under 16 need a parent or guardian to accompany them at all times while volunteering with Vélocity.

Join us for an LGBTQIA+ D&D happy hour! Come unwind, roll some dice, and share adventures over drinks (alcoholic or otherwise)! Whether you’re a seasoned adventurer or just curious about the world of tabletop roleplay, it’s a space to connect, laugh, and celebrate community. Can't make it? Join the [DMV D&D Discord ](https://discord.gg/bDvGRtKfhR)to stay up to date on all the latest and greatest events!

No sign\-ups required \| All levels welcome \| 21\+ If you're looking for a casual game of chess in a fun atmosphere, this event is for you! Members range from beginner to master level, and games are played both with and without time controls. This event is held at a bar, the Board Room, in Washington, DC, and is intended for 21+ players. We meet upstairs, on the mezzanine. Upon arrival, fill out a name tag and indicate your relative skill, to facilitate match-ups. Chess sets and boards are provided. We don't have club clocks, but most people use the Chess Clock app from Chess.com to play timed games.

👉 Enroll at **[www.worklifespanish.com/conversational-spanish-clubs.html](http://www.worklifespanish.com/conversational-spanish-clubs.html)** Our ***Beginner Banter Club*** meets online and is available to all Spanish learners at the A1-B1 levels who want to start speaking and build confidence. Each week, we’ll explore vocabulary and cultural themes like holidays, food, and daily life in the Spanish-speaking world. **​**Location: Zoom Day: Mondays, 5pm - 6pm ET ​Price: $27.50 / session or FREE with monthly credits 🎁 **FREE Trial Event Available!** Use code **FREECLUB** when you sign up. 👉 Enroll at **[https://www.worklifespanish.com/conversational-spanish-clubs.html](https://www.worklifespanish.com/conversational-spanish-clubs.html)**

Looking for a new skill? Want to seem mysterious when people ask about your hobbies? Enjoy puzzles? Lock picking might be right for you! Is this legal? Yes! Is it fun? Yes! The meeting is very casual, come and go as you please. We meet in the upstairs area of Board Room. No payment, skills, tools, or RSVP necessary. If you can make small precise movements with your hands, you can learn to pick locks. Introductory talk at 7pm. All are welcome. We meet in a bar but minors are allowed to attend. We are not in a private room; parental discretion advised. If you are a minor or are responsible for one who's attending, please email the organizer in advance at chapter-DC@toool.us Open invite; bring friends! We are the DC chapter of TOOOL. More information here: http://toool.us/

This is an opportunity for volunteers to support a professional mechanic as he guides customers working on their own bikes. If you know how to do some basic repairs, that's a plus, but even if you don't, you can greet customers and manage who gets helped next. Feel free to attend for only a portion of the time if you can't be there the whole three hours. Please note that this event is not usually an opportunity to learn about bicycle repair, since the mechanic tends to be very busy helping customers, especially during the warmer months. But it's a great way to contribute to Velocity, since almost all the funding for the volunteer program comes from the work done at the shops.

Welcome to our new home at the historic Tivoli Theater! Please check our details for access to the space on [our website](https://www.hacdc.org/visit/). Join the discord for questions / help getting in (use channel #let-me-in) [https://discord.gg/dNjuNhNmeT](https://discord.gg/dNjuNhNmeT)

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **This is a curated, small-group meetup make new friends in Washington.** Each meetup brings together 4–6 like-minded people for casual conversations over brunch. We use the Groupvibe platform to organize and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com](https://groupvibe.com) Once you register, and **buy a ticket or become a Groupvibe member**, we’ll share the exact location and match you with your group. **Why this works:** \* Smaller groups make real conversations easier \* Matching helps avoid awkward dynamics **Note:** RSVPs here on Meetup don’t reflect total attendance. Many attendees register directly via our website. This meetup is organized by **Groupvibe**, a small team passionate about helping people form meaningful friendships offline.

This Happy Hour is devoted to professionals in the International Affairs and Development community, to grow, interact, and learn from each other. It is designed to provide a professional environment to meet other International Affairs professionals to broaden one's career. It is also for those interested in International Affairs and Development careers and are studying or intend to enter the dynamic world of global development. HOW IT WORKS : We will try to assign tables for each represented INDUSTRIES/SECTORS/SPECIALIZATIONS and will direct attendees to their respective tables accordingly. All industries are welcome! However we don't guarantee the availability of a partner in that particular field, you would like to exchange experience. PLEASE BRING YOUR SOFT/HARD COPY BUSINESS CARDS. Rules to abide : 1\. Event is 21\+ \(bring ID\)\. 2\. Be respectful to your counterparts and give them a chance to exchange with others as well\. 3\. We all specialize in one or two fields and be willing to engage others and try to accommodate as much as possible\. 4\. If you don't specialize in the other person's required discipline\, LEAVE THEM ALONE\. 5\. Rude or aggressive members are removed from the group at an organizers discretion\. 6\. This is a face\-to\-face event\. DO NOT try to arrange an online meeting\, by using the comment box or direct message\. 7\. Most of our members complained about people writing in the comment box\. Since it sends notification to all attendees\. If you have any questions\, send a message to the organizers\. Don't write in the comment box\. 8\. We have ZERO TOLERANCE for solicitation\. We don't allow anyone to run their own agenda at the Event\. If you are interested to promote/sponsor/collaborate; contact us via \(info@merevents\.com\)\. 9\. When you get there\, we greet you and take you to your respective group\. 10\. Don't be shy of your specializations\. We have diplomates assigned to different countries\, who would love to learn more from your experience\. 11. ***Please be patient for the first 30 minutes, up until we form a group with your respective industry/sector.*** ***AFTER THE SOCIAL, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!*** ***N.B. : We have ZERO TOLERANCE for solicitation. We don't allow anyone to run their own agenda at the Event. If you are interested to promote/sponsor/collaborate; contact us via ([info@merevents.com](http://info@merevents.com/)).***

This Happy Hour is devoted to professionals in the International Affairs and Development community, to grow, interact, and learn from each other. It is designed to provide a professional environment to meet other International Affairs professionals to broaden one's career. It is also for those interested in International Affairs and Development careers and are studying or intend to enter the dynamic world of global development. HOW IT WORKS : We will try to assign tables for each represented INDUSTRIES/SECTORS/SPECIALIZATIONS and will direct attendees to their respective tables accordingly. All industries are welcome! However we don't guarantee the availability of a partner in that particular field, you would like to exchange experience. PLEASE BRING YOUR SOFT/HARD COPY BUSINESS CARDS. Rules to abide : 1\. Event is 21\+ \(bring ID\)\. 2\. Be respectful to your counterparts and give them a chance to exchange with others as well\. 3\. We all specialize in one or two fields and be willing to engage others and try to accommodate as much as possible\. 4\. If you don't specialize in the other person's required discipline\, LEAVE THEM ALONE\. 5\. Rude or aggressive members are removed from the group at an organizers discretion\. 6\. This is a face\-to\-face event\. DO NOT try to arrange an online meeting\, by using the comment box or direct message\. 7\. Most of our members complained about people writing in the comment box\. Since it sends notification to all attendees\. If you have any questions\, send a message to the organizers\. Don't write in the comment box\. 8\. We have ZERO TOLERANCE for solicitation\. We don't allow anyone to run their own agenda at the Event\. If you are interested to promote/sponsor/collaborate; contact us via \(info@merevents\.com\)\. 9\. When you get there\, we greet you and take you to your respective group\. 10\. Don't be shy of your specializations\. We have diplomates assigned to different countries\, who would love to learn more from your experience\. 11. ***Please be patient for the first 30 minutes, up until we form a group with your respective industry/sector.*** ***AFTER THE SOCIAL, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!*** ***N.B. : We have ZERO TOLERANCE for solicitation. We don't allow anyone to run their own agenda at the Event. If you are interested to promote/sponsor/collaborate; contact us via ([info@merevents.com](http://info@merevents.com/)).***

Join members of the local UX and Digital Design community for a casual monthly breakfast. There _might_ be a little snow, but there _will_ be effectively infinite serve-yourself coffee, so it evens out if you ask me. Just a reminder, while the other locations are great too, we’re at the Lane Ave one this time.

**Understanding the Columbus Housing Market: Let’s Talk Downsizing for Seniors** Understanding the Market to Make Your Best Move Yet Thinking about downsizing or helping a parent prepare for a move? Join us for a friendly, educational seminar designed specifically for seniors in Central Ohio. We’ll break down what’s happening in today’s Columbus housing market, explore timing and planning for downsizing, and discuss easy ways to prepare a longtime home for sale—without overwhelm. You’ll also learn about low‑maintenance housing options, financial considerations, and simple steps to make your next move smooth and stress‑free. This is a relaxed, no‑pressure event where you can ask questions and get practical advice tailored to seniors and their families. Hosted by: Katie McCartney, Broker & Senior Real Estate Specialist® (SRES)

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

### Tools in your AI's Toolbox : An introduction to MCP Servers The generative AI revolution has unlocked unprecedented capabilities, but the next frontier is agency: empowering models to interact with, query, and act upon the world. The current challenge is the “N x M integration problem,” where every AI model requires a custom, brittle integration for each external tool or data source. This approach simply doesn’t scale. How can we give an AI access to our sales leads, code repositories, or IoT devices in a standardized, secure, and reusable way? This session introduces Anthropic’s Model Context Protocol (MCP), the open-source framework designed to solve this challenge and become the universal connector—the USB-C port—for AI. MCP standardizes how AI models discover and use external tools, moving beyond simple function-calling to a robust, client-server architecture. We will dive into how this open protocol is creating a new ecosystem for building powerful, context-aware AI agents. Join this session for a developer-focused introduction where you will learn how to: Understand the core concepts of the open-source Model Context Protocol and its architecture. Utilize pre-built, open-source MCP servers to instantly connect AI to tools like Git, Slack, and databases. Build a custom MCP server to securely expose your own proprietary data and APIs as tools for any compliant AI. Move beyond bespoke integrations and contribute to a standardized, collaborative, and open ecosystem. Stop building one-off connectors and start building intelligent agents. This session will give you the practical knowledge to leverage MCP and create the next generation of AI that doesn’t just talk, but does. Want to be a speaker? submit your talk to our Call for Presenters!!! [https://sessionize.com/azure-cbus-2026/](https://sessionize.com/azure-cbus-2026/)

Try new games, meet new people, and find out what story games are all about! Explore the reaches of space! Witness kingdoms rise and fall! Create and explore tragedies! All within a single game night. We play story games like Fiasco, Kingdom, Polaris and Microscope that encourage everyone at the table to participate creatively. We also have one-shots of indie, OSR, and narrative-focused RPGs such as Apocalypse World, Dread, Lady Blackbird, and Old School Essentials! Everybody's welcome! It doesn't matter if you've never tried story games before or never played roleplaying games at all! Just bring your brain and a good attitude and come try it out! *** **IMPORTANT** * When you arrive look for the marked Story Games Columbus Tables. Each table will have a separate game. Seating is on a first-come-first-serve basis. * If all tables are full, look for a Facilitator. We will find a way to get you into a game! * There is a flat $3 cover charge for events at Tabletop. *** **Facilitators!!** Please arrive early so that we can get you set up with a table. Please reach out to me ASAP if you would be willing to help facilitate. You can reach me on the SGC Discord here - https://discord.gg/jUTvWUu

OWASP is ending use of Meetup, so I built an eventbrite for the event. https://www.eventbrite.com/e/ai-development-risk-case-studies-and-how-agentic-ai-is-the-future-of-appsec-tickets-1981450622150?aff=oddtdtcreator AI is transforming how software is designed, developed, and deployed, dramatically accelerating velocity while introducing new categories of risk. As organizations adopt AI-assisted coding, autonomous agents, and increasingly complex model interactions, traditional application security approaches struggle to keep pace. This talk examines emerging AI-driven risks through real case studies from the field, highlighting issues such as insecure code generation, data-leakage pathways, model manipulation, and evolving supply-chain threats. We will explore how engineering teams must adapt their people, processes, and governance models to secure AI-augmented development workflows effectively. The session will then introduce agentic AI as the next evolution in application security—autonomous systems capable of continuous analysis, multi-step reasoning, and real-time remediation. Attendees will learn how combining agentic AI with modern practices can reduce developer friction, improve coverage, and create a future-ready application security strategy designed for the demands of AI-native software development