Fleuron

A markdown editor that runs

q3-health.mdFolio

Q3 Engineering Health

Aggregated across all services. Updated every five minutes from the metrics pipeline.

Active Users
0
↑ 35.6%·30d
P99 Latency
0ms
↓ 38.2%·7d
Deploy Success
0%
↑ 2.3%·14d

All three metrics trending in the right direction since the infra migration.

It’s markdown. Start there.

Nine blocks. One syntax.

All nine are fenced code blocks. Different language tag, different renderer.

HTTPList posts
:
:
:

Drag to compare markdown source with rendered output.

Slash menu
Type / anywhere to insert any block. Options adapt to where you are in the document.
Selection toolbar
Bold, italic, code, link, kbd, highlight — appears on selection, disappears when you're done.
Smart paste
Paste a URL and get an embedded link. Paste an image and it drops in ready to use. The clipboard knows what you meant.
Copy as image
Render any block to PNG — a chart, a terminal session, a diagram. Paste it into a slide, an email, anywhere.

Write it. Read it differently.

X-ray mode overlays diagnostic lenses on your prose. Spot every hedge word, nominalization, and weak verb at a glance. Readability metrics update live as you write.

VerbsNominalizationsHedge wordsAdverbs

The investigation of the authentication failure has led to the identification of a configuration issue. Additional analysis suggests the implementation may require further optimization.

38Flesch-Kincaid
4 minReading time
8Nominalizations
2Hedge words
Conceal mode
Markdown syntax tokens disappear while writing. The document reads as prose, not markup.
Focus mode
Everything outside the active paragraph dims. One thought at a time.
Typewriter mode
The active line stays vertically centered. Your eyes never move, your words do.
Sentence reader
Step through your document sentence by sentence. A slower, more deliberate way to proofread.

Write it once. Present it.

Every document becomes a slide deck. Notes, a live timer, and annotation tools — the audience sees only the slides.

Every document becomes a slide deck. Notes, a live timer, and annotation tools — the audience sees only the slides.

Fleuronincident-response.bookPresenter
Current
Incident Timeline
  • 03:42 UTC — latency spike detected
  • 03:51 UTC — root cause identified
  • 04:02 UTC — rollback initiated
Next
Root Cause
GETapi.internal/auth/tokenSend
Response
504Gateway Timeout · 342ms
{
  "error": "upstream_timeout",
  "service": "token-cache",
  "retries": 3
}
Speaker notes

Pause here. Ask if anyone has questions about the timeline before moving on.

Scratch

—

1 / 4
04:23
Audience view

Incident Timeline

  • 03:42 UTC — latency spike detected
  • 03:51 UTC — root cause identified
  • 04:02 UTC — rollback initiated
Slide annotations
Pen, highlighter, spotlight, blackout, laser — draw on slides live without leaving the console.
Audience view
Share a link. Audience auto-advances with you, or breaks free to navigate independently.
Speaker notes
Per-slide notes visible only in the presenter console. Scratch pad writes back to the source book.
Hidden slides
Keep backup slides in the deck. They stay hidden during the main flow, visible only to you.
fleuron-mcp

Fleuron speaks MCP.

Ask Claude to summarize your spec, pull live data from a block, or draft a section — then write it back. Any AI tool that speaks MCP speaks Fleuron.

Browse your library
List all books or search across your entire workspace by title or content.
Read any book
Pull the full content or just the outline of any book as context for your AI client.
Create books
Generate new books from AI output — complete with structured blocks and headings.
Write back
Update existing books, add callouts, rewrite sections. Changes land directly in the editor.

One link. No account needed.

Everyone with the link is in the document. No accounts, no invitations. Just share the link.

# Incident Response — API Gateway
Status ResolvedAlice
On-call Alice · Marcus · Elena
## Timeline
03:42 — latency spike detected
03:51 — auth timeoutMarcus
## Resolution
Patch in reviewElena
Test scheduled Monday

Incident Response — API Gateway

StatusResolved
On-callAlice · Marcus · Elena

Timeline

latency spike detected
auth timeout

Resolution

Patch in review
Test scheduled Monday
Read-only links
Share a book publicly without requiring an account. Create or revoke per book.
Public viewer
Anyone with the link reads the rendered document — blocks, diagrams, and all.
Bookcase folders
Nested folders with drag-and-drop reorder. Keep your library organised your way.
Book preview
Hover over any book to peek at its contents without opening it.

And everything else.

Details that add up. Each one a decision, not a default.

  • Collapsible headings

    Any heading folds its section. Keep long documents navigable without leaving the editor.

  • Reading bookmark

    Reopening a book picks up where you left off. Per-book scroll position, always.

  • Color swatches

    Hex and RGB values render as inline color chips in the preview. No more guessing what a value looks like.

  • Six accent themes

    Sienna, forest, ocean, plum, rust, ink. One switchable accent color, used sparingly across the UI.

  • Dark mode

    Full token-driven theming. Every surface, every block, every shadow — dark or light.

  • Keyboard shortcuts

    A full cheat-sheet modal. Every command documented in one place, one keystroke away.

  • Heading folding

    Collapse any section by heading level. Write long documents without losing your place.

  • View Transitions

    Animated slide between Editor, Split, and Preview. The document never disappears — it transforms.

  • Font size

    Adjustable from 12 to 20. Your document, your size. Persists across sessions.

  • Line markers

    Annotate code lines as added, removed, highlighted, or warned. Like a git diff, but readable.

  • Code block options

    Set a title, caption, width (full, half, third), alignment, and collapse threshold — per block.

  • Multi-cursor

    Place multiple cursors and edit in parallel. Hold Alt and click, or use column selection.

  • Adaptable UI

    Hide the gutter, topbar, or idle icons. Adjust font size. The editor fits your workflow.

  • Find & replace

    Full-document search with regex support. Replace one match or all at once.

  • Resume session

    Refresh the page and rejoin the collab room automatically. The room persists.

  • Remove styling

    Strip bold, italic, links, and code from any selection in one keystroke. Back to plain.

  • Video embeds

    Paste a video URL and it renders as a player in the preview. No embed code needed.

  • Letter animations

    Optional typing effects — pop, fade, slide, blur — on each character as you write.

  • Keyboard navigation

    Hop between paragraphs, headings, or sentences with a single keystroke. Park the cursor mid-word and teleport back.

  • Smart edits

    Ghost delete, semantic backspace, intent-aware Enter — the editor understands what you meant to do.