Where teams and agents
build togetherReal-time Markdown collaboration for
build together
Real-time Markdown collaboration for teamscommunitiesprojectsdocs
teams
communities
projects
docs
Your team has ideas,
your agents have capabilities,
HackMD brings them together
Teams are shipping faster than ever
AI agents handle drafts, code generation, research, and documentation. But there's a disconnect that's slowing everything down: the place where your team thinks, plans, and refines their work isn't the same place your agents can access it.
What's missing is a shared layer
Your team and your agents should always be working from the same source of truth, a place where the team sets direction, agents contribute, and everything stays aligned as ideas move from rough draft to polished output ready to ship.
That's where HackMD comes in
It's not just a collaboration tool for your team, but the shared context layer that keeps your team and your agents in sync. Your team refines ideas in one place, agents pull from that same place, and when agents contribute something back, it lands right where the team can review, edit, and build on it together.Millions build with HackMD's Markdown editor every day
Powering teams around the world, from next-generation startups to established institutions
HackMD makes it easier to share with the team in concrete, technical details the features and rationale for a specific component.
Mikerah Quintyne-CollinsFounder of HashCloak and Stoffel Labs
Built for the team, open to your agents
Your workspace, where humans collaborate and agents can keep upReal-time editing with multiple cursors, comments, version history, and GitHub sync. Everything your team already counts on, every day.Every edit, every comment, every revision is tracked and recoverable, so your team's thinking isn't just captured in the final draft but in the full history of how you got there. That means onboarding someone new, revisiting a past decision, or understanding why something changed is never more than a scroll through the version timeline.
Explore features
Write together, think together, ship together
Real-time editing with multiple cursors, comments, version history, and GitHub sync. Everything your team already counts on, every day.
Every edit, every comment, every revision is tracked and recoverable, so your team's thinking isn't just captured in the final draft but in the full history of how you got there. That means onboarding someone new, revisiting a past decision, or understanding why something changed is never more than a scroll through the version timeline.Explore features
Built for how communities actually work
From hackathons and research groups to open-source projects, study groups, and devnets, HackMD has been the working surface for communities that build knowledge in the open.
When your community has a home base where anyone can show up, share what they know, and start building with each other, that's when things start to take off. HackMD gives your community a place to gather around ideas, engage with each other's work, and grow together, whether that's ten contributors or ten thousand.See community stories- Public notes
- Shared workspaces
- Embeds
- Slide mode
- Open-source friendly
Give your agents the context they need, without the overhead
Every HackMD note is Markdown all the way down, which means your agents can pull context, reference docs, and team knowledge through the same URLs your team uses.
- Pull any note as Markdown via REST API or CLI
- Push agent-generated drafts back into your workspace
- Agent gets Markdown via Accept: text/markdown
Markdown content uses up to 80% fewer tokens than the equivalent HTML, so your agents spend their compute on the actual work, reducing cost for your team.Teams are using HackMD's API to feed their agents context, automate note creation, and keep documentation in sync.
Read the API docs1M+
Already powering over 1M+ API callsMarkdown is the layer,
humans are still in charge
HackMD is Markdown all the way down — authored, stored, versioned, and served. Humans stay in the loop, agents get clean content without a translation layer.
Your team writes
in a real-time editor with the formatting and structure you'd expect.
Your agents read
the same content, the same URLs, in the format they already understand.
You stay in control
of what gets reviewed, merged, published, or rolled back. Agents don't ship to production. Your team does.Join a global movement
A million-strong community of teams, researchers, hackers, and open-source contributors is using HackMD to build in the open. Now their agents can join in too!1mUsers
30kTeams
170Countries represented
7.7mNotes created