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HackMD

A quick public spec, Markdown handout, or project documentation page.

Facts

Free allowance
Unlimited notes
Plan limits
400 API calls/month · 10 recent versions per note
Storage
Free image uploads up to 1 MB per image. Aggregate quota unverified.
Account
HackMD account required for authors.
Retention
Free retains the most recent 10 note versions and keeps trash for 3 days.
Custom domain
Custom domains are listed under Enterprise.
Password protection
Notes have sharing permissions. Publishing changes read access to Everyone.
Billing
$0 Free plan. The Free API allowance is 400 calls/month.
Execution
Managed Markdown rendering and publishing. The note API can create and update Markdown content.

Worth knowing

Published notes are readable by anyone. Set sharing permissions separately for notes you want to keep restricted.

Reviewed 2026-11-14 from official documentation. Deployments have not been tested.

Sources

Free plan and API quota ↗Publishing a note ↗Public-note visibility ↗Create and update hosted notes through the API ↗
Visit HackMD ↗

How we match

Choose the kind of thing you made and the features you need. The results respond to the capabilities recorded in our directory.

Each result explains its fit or mismatch. Unverified commercial-use permission is marked for a terms check. Unknown free features don’t count as confirmed fits.

Apps can run in the browser, as serverless functions, or on a persistent server. For apps, choose a runtime. For AI agents, choose an agent service, MCP server, or code sandbox. For sites and files, choose web pages or file links. A sandbox or serverless endpoint is not a continuously running process. In each group, select several to see hosts that support any selected option. Leave them blank to explore broadly; your agent can check the runtime before publishing. Docs & media candidates also need an exact file-format and size check. Commercial mode removes records with documented personal or non-production restrictions; it does not certify permission on other hosts.

Open a host to read its limits and sources. The agent brief packages your choices and those limits into instructions you can paste into your agent. It does not publish anything.

Each record has its own review date (October 11–November 14, 2026); deployments, privacy, support, and uptime have not been tested. There are no paid placements or affiliate links in this edition.

Independent by PLUSDEV ↗

Your publishing brief

The thing you made, chosen host, and the checks to do before publishing. No files or credentials are included.