# Show HN: OpenMarkdown – A Markdown editor your coding agent edits with you > Source: > Published: 2026-11-02 13:30:56+00:00 ### Ask, don’t hunt. Ask where something is. Your agent opens the right note and takes you to the heading — you read your own words, not a summary. A local-first Markdown editor **built for you and your agent**. An idea gives you about five seconds. OpenMarkdown takes less than one. A native Rust core: the window is there before you let go of the mouse. A real prompt shouldn’t live in a one-line box — point `$EDITOR` at OpenMarkdown, write it like a document, **hand your agent the finished thing.** No undo, no drafts, no half-sent prompts. No AI inside. That’s the point. It runs on **the agent you already have.** Local-first means every note stays a plain `.md` on your disk. The file is the memory. Agents change; **your knowledge doesn’t.** Your agent runs in a terminal tab **right in the sidebar** — the one you installed. It reads, finds and writes on the page you’re looking at. No AI ships inside OpenMarkdown. Terminal and intercom: macOS and Linux. Select a passage and ask. Your agent reads **exactly what you selected** and reworks it in place — nothing to copy into a chat box. `$12/mo`, fast, no SSO`$9/mo`, slow, has SSO`$15/mo`, fast, has SSO | Vendor | Price | Speed | SSO | |---|---|---|---| | Acme | `$12/mo` | fast | — | | Globex | `$9/mo` | slow | ✓ | | Initech | `$15/mo` | fast | ✓ | Ask for a draft under a heading. Only that section changes — the rest of your note stays exactly as you left it. Tick a box or fix a line. Your agent sees the change and picks up from there — no need to explain what you did. Type to your agent in the intercom; it replies in a line or two — never its working notes. Control without leaving the keyboard. Skip the file tree. Skip the menus. One key cycles all three — live preview, plain source, clean reading. Markers render as you type; your cursor enters an element and it snaps back to source. Every marker visible, syntax-coloured, one size. True plain text for commit messages and prompts. No cursor, no markers, just the page. ****Drafted with my agent**** — we’re both in ``plan.md``: it writes, I tick, it reads the ticks back. `plan.md``: it writes, I tick, it reads the ticks back. - [x] map the current token flow - [ ] draft the migration steps - [ ] flag anything risky Byte-for-byte. OpenMarkdown never reflows, trims, or reformats your text — open and close, the file is unchanged. Delete moves files to the system Trash. Autosave when you pause, without nagging. Tabs, folder, and cursor come back after a crash. No telemetry, nothing phones home. Your agent reads the same file on the same disk — no third party in between. Standard Mac shortcuts — and ⌘P opens a palette for every command. [Full list →](https://openmarkdown.dev/docs/reference/shortcuts/) Full trilingual UI. Missing your language? [Open a discussion.](https://github.com/OpenMarkdown-dev/OpenMarkdown-releases/discussions) `openmd` CLI Open files from your terminal. Install it in one click from Settings. It’s free, and it stays free. If it earns a place in your day, you can back it.