Describe it. Diagram it.
Tell our AI what you need in plain English and get a professional Mermaid diagram in seconds. No syntax to learn. No account required to try.
Try it now — no signup needed
From conversation to diagram in seconds
Built for how you actually work
Whether you're documenting architecture, explaining a process, or planning a sprint — MermAgent gets you there faster.
Developers
Document system architecture, API flows, and database schemas without leaving your workflow. Export as SVG for your docs.
"Draw an ER diagram for my user, orders, and products tables"Product Managers
Map user journeys, create process flows, and visualize feature specs. Share diagrams with your team instantly.
"Show the user onboarding flow from signup to first purchase"Students & Educators
Visualize algorithms, data structures, and concepts for assignments and lectures. Learn by diagramming.
"Create a state diagram for a TCP connection lifecycle"Stop wrestling with syntax
graph TD
A["User Request"] --> B{"Auth Check"}
B -->|Valid| C["Load Dashboard"]
B -->|Invalid| D["Redirect Login"]
C --> E["Fetch Data"]
E --> F["Render Page"]
D --> G["Show Login Form"]
G --> AMemorize syntax. Debug bracket errors. Google every diagram type.
Describe what you need. Get a perfect diagram. Iterate with chat.
Everything you need to diagram
AI Chat Interface
Describe diagrams in plain English. Edit through conversation. Marina understands context and iterates with you.
12+ Diagram Types
Flowcharts, sequence, class, state, ER, Gantt, pie, journey, git graph, mind map, timeline, and more.
Version History
Every change is tracked. Browse, preview, and restore any previous version of your diagram.
Code Editor
Prefer to write Mermaid syntax directly? Switch to code mode with instant live preview.
Export PNG & SVG
Download your diagrams as high-quality images. Perfect for docs, presentations, and wikis.
Multi-Board
Organize diagrams across multiple boards. Each board is a workspace with its own chat history.
What people are saying
Built by a developer, for developers
MermAgent is built by Grizzly Peak Software, a software studio focused on developer tools and AI-powered workflows. We use MermAgent ourselves every day to document architecture, plan features, and communicate with our teams.
Secure by default
All data encrypted in transit via HTTPS. OAuth authentication — we never see your password.
Your data, your diagrams
Diagrams are stored securely and scoped to your account. We don't use your content to train AI models.
Transparent policies
Read our Privacy Policy and Terms of Service — written in plain English.
Supports every diagram type
If Mermaid.js supports it, Marina can build it.
Get in early — MermAgent is growing fast
We're actively building new features based on user feedback. Sign up now and lock in free access while we're in beta. Pro plan pricing is introductory — it will go up.