Mention @arialine to describe a system. Arialine posts the Mermaid diagram as interactive HTML and PNG. Keep talking in the thread to update it — every change becomes a new version, with the decision history preserved.
Arialine uses AI to generate diagrams. AI output can be inaccurate—review diagrams before relying on them.
Demo video coming soon
Works with the Slack you already use
Mention Arialine with a plain-language description. It writes the Mermaid, renders the diagram, and posts an interactive HTML file + PNG back to the thread.
Mention @arialine in the diagram thread and say 'add a caching layer'. Arialine rewrites the Mermaid, renders a new version, and posts a one-line version reply with Undo & Rewind.
Versions and source-linked changes stay with the board. Where Slack permits, Arialine uses a standalone ledger Canvas; on Slack Free it updates a ledger message in the board thread without touching the channel Canvas.
Every workflow runs in the Slack thread where the conversation was already happening — the diagram just stops being the part that lives somewhere else.
“Move the cache in front of the ledger DB?”
Proposal · v4
v4 applied · source message linked
Engineers and tech leads
Proposed edits land as apply-or-dismiss cards in the thread, and the accepted version keeps the message that caused it — so “why is this arrow here?” always has an answer.
See the workflowRetries spiked 14:02 → DLQ filled by 14:07
Queue depth alert never fired?
Incident reviewers and service owners
Map what actually happened, keep observed facts visually distinct from working theories, and version every follow-up fix alongside its source discussion.
See the workflowpayment-flow — Decisions
New engineers and onboarding buddies
Hand a new hire the current diagram with the recorded decisions behind it. They correct what they find through the board thread — and the walkthrough improves itself.
See the workflowDiagramming isn't just a single click. It's a supply chain of ideas, decisions, and iterations — Arialine keeps that chain visible.
You describe intent in plain language. Arialine parses it, writes the Mermaid, and posts the render. No syntax, no export/import, no separate app.
.md file. Get a native Slack Canvas — with the Mermaid inside rendered as diagrams.Slack doesn't render Markdown in messages, and an uploaded .md just shows as a plain snippet. Arialine turns it into a proper Canvas — headings, lists, tables — and every ```mermaid block becomes an embedded diagram image. One doc, fully readable in Slack.
Every entry point produces the same anatomy — a root message with controls, a version thread, and a decision ledger. Pick the one that fits your flow.
Mention Arialine with a sentence, or finish a team discussion with '@Arialine turn this into a diagram'. It selects the latest coherent topic, ignores chatter and older conversations, and asks when two topics are equally plausible.
See @mention flow@dana
Retries hit the queue, then the worker picks them up.
Render as diagramHover on desktop or long-press on mobile, choose 'Render as diagram', and Arialine turns that selected message into a board in the same channel.
See message shortcutsMention @arialine with 'brainstorm' or explicitly ask it to help with ideas. It produces alternative takes on the current diagram; use /arialine for settings and board controls.
See brainstormingProposed change
Any team member can 📌-react a message. Arialine reads it in context and posts a proposal card with Apply / Edit proposal / Dismiss — no interruption to the flow of the thread.
See proposal cards# Runbook
- deploy
```mermaid
graph TD
Drop a .md into any channel and Arialine converts it to a Slack Canvas with headings, lists, tables — every ```mermaid block becomes an embedded diagram image.
See canvas renderingShortcuts
From anywhere in Slack, open the ⚡ shortcuts menu, pick a channel, type a description, and get a board — great when you're not currently in the channel you want to post to.
See global shortcutsEvery accepted change saves a new version instead of overwriting the last one, and Arialine keeps the Slack message that caused it attached to that version.
Pick a version on the right — the diagram goes back to how it looked, and the message that changed it comes with it.
Why v3 exists
"Any charge that fails 3× should go to a dead-letter queue so ops can triage it manually."
@sam in #payments · 2 days ago · open in Slack ↗
⇄
MCP integrationArialine exposes a Model Context Protocol server, so Slackbot (Slack AI) can create, edit, and query your boards on your behalf. Ask "turn this discussion into a diagram with Arialine" — Slackbot picks the right tool, Arialine posts the board, and the ledger records who asked.
Every default preserves the simplest behavior. Admins opt into more.
Keep updates in-thread, or announce each new version as a channel message.
Choose where canvas links post, and whether .md files auto-render.
Renders and decision canvases live in Slack. Arialine stores the source and version state needed to update them, and sends invoked context to configured AI providers.
Start free with up to 3 boards and 10 AI generations per workspace each day. Move to Team for unlimited AI generations and boards. A workspace-bound Upgrade link opens checkout without requiring the payer to sign in to Slack.
For teams trying Arialine on a channel or two.
What's included
Add to Slack For teams making diagrams a daily habit.
What's included
Choose Team — Add to Slack Need the full comparison? See detailed pricing →
No. Arialine writes Mermaid from plain-language descriptions. You can still paste Mermaid, attach a .mmd file, or export the source whenever you want.
A standard Slack app with a bot user, /arialine command, App Home, and Slack shortcuts. It only works in conversations the app can access; the requested Slack permissions are shown during installation.
Diagram renders and canvases live in Slack. Arialine stores the diagram source, versions, decisions, and service/account state needed to keep boards working. Invoked AI features send only the relevant request and context to configured model providers. Arialine does not use your Slack content to train AI models.
Yes. Each diagram version includes a mobile-friendly PNG in Slack, while the interactive HTML version is available when you want the richer view. Versions, decisions, Undo, and Rewind remain available from Slack.
Yes. Every accepted change creates a new version instead of overwriting history. Undo removes a change, Rewind restores an earlier state as a new latest version, and Branch lets you explore an alternative separately.
Free includes every feature with workspace-wide board and daily AI-generation limits. Only requests that reach an AI model count; model-free actions do not. Team removes both limits for one flat workspace price, regardless of how many members use Arialine. See the pricing page for current values.
Looking for commands, troubleshooting, billing details, or privacy help? Open the Help Center →
Install it in one click. Start in a single channel — Arialine only works where you invite it and stays unobtrusive by default.
