Flux Sovyren Flux

Flux

The AI-Native Diagram Platform

Create, collaborate on, and embed 14 types of diagrams — controlled by Claude, Cursor, and any MCP-compatible AI. Three render modes. GitHub sync. Free forever core.

Free tier available MIT Licensed MCP server 14 diagram types 14 MCP tools

Zero install — run it now:

$ npx @sovyren/flux-mcp

Works with Claude Code, Cursor, Claude Desktop, and any MCP-compatible client.

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Free tier forever · No credit card required

By the numbers

14 diagram types
14 MCP tools
3 render modes
7 export formats
25 curated templates
115 unit tests
MCP-First

Built for AI-First Workflows

Flux ships a production-grade MCP server as the primary interface. Your AI agents call Flux tools directly inside the same conversation — no tab switching, no copy-paste, no drift.

Dual transport

stdio for local Claude Desktop & Claude Code — Streamable HTTP for remote clients like Cursor

Standalone mode

Local SQLite storage — no account, no API key required. Fully offline-capable.

MIT licensed

The @sovyren/flux-mcp package is open source, free to use, modify, and distribute forever.

Compatible clients

Claude Code Claude Desktop Cursor Windsurf Zed
14 MCP tools @sovyren/flux-mcp

// Available tools in your AI client

  • ▸ create_diagram
  • ▸ edit_diagram
  • ▸ delete_diagram
  • ▸ list_diagrams
  • ▸ get_diagram
  • ▸ export_diagram
  • ▸ import_diagram
  • ▸ suggest_type
  • ▸ describe_diagram
  • ▸ analyze_diagram
  • ▸ analyze_codebase
  • ▸ create_light_cone
  • ▸ create_knowledge_light
  • ▸ get_industry_templates

+ 4 resources  ·  5 prompt templates

Diagrams

14 Diagram Types

From flowcharts to Wardley Maps — all accessible from your AI client via a single MCP command.

Mermaid

Flowchart

Process flows, decision trees, pipelines

Mermaid

Sequence Diagram

API interactions, message flows, HTTP calls

Mermaid

ERD

Database schema and entity relationships

Mermaid

C4 Model

Software architecture (Context/Container/Component/Code)

Mermaid

Swimlane

Cross-functional process ownership

Mermaid

Mind Map

Hierarchical topic branching, brainstorming

Mermaid

UML Class

Object-oriented design, inheritance, polymorphism

Kroki

BPMN

Business process automation, gateway flows

Kroki

Infrastructure

Cloud topology — AWS, GCP, Azure, Cloudflare

D3.js

Knowledge Graph

Force-directed concept networks and ontologies

D3.js

Light Cone

Causal analysis and temporal consequences

D3.js

Knowledge Light

Illuminated concept radiating outward in rings

D3.js

Code Map

Module dependencies and codebase structure

D3.js

Wardley Map

Strategic positioning on evolution vs. value chain

Rendering

3 Render Modes

2D SVG, 3D via Three.js, and ASCII Unicode — switch modes with one click.

⚡

Auto

Rule-based layout

Flux automatically arranges your diagram using per-type layout rules. Clean, consistent, zero manual positioning.

✦

Manual

Canvas drag-and-drop

Full Excalidraw canvas with hand-drawn aesthetics. Drag nodes, reposition edges, and customize every element.

MCP-powered
◈

AI

MCP-directed layout

Your AI agent calls Flux MCP tools directly — create, edit, and arrange diagrams via natural language in Claude or Cursor.

GitHub Integration

Your diagrams, in your repo

Flux's GitHub App syncs diagrams bidirectionally with your repository. Diagram files are tracked as JSON alongside your code — PR reviews can include diagram updates, and push events trigger automatic sync.

  • GitHub App with OAuth installation flow
  • Webhook-driven auto-sync on push events (HMAC-SHA256 verified)
  • Conflict resolution UI for diverged diagrams
  • Sync status dashboard with per-repo job health
  • Cloudflare Queue for async sync with automatic retry
my-project / diagrams
+ arch.flux.json
+ api-flow.flux.json
+ db-schema.flux.json
+ wardley.flux.json
✓ synced with Flux

Everything included

9 features across 8 modules

MCP

14-Tool MCP Server

Production-grade MCP server with 14 tools (create, edit, analyze, export, import diagrams) — dual transport: stdio for local and HTTP for remote. MIT licensed, zero-install via npx.

Diagrams

14 Diagram Types

Flowchart, Sequence, ERD, C4 Model, Swimlane, Mind Map, UML Class, BPMN, Infrastructure, Knowledge Graph, Light Cone, Knowledge Light, Code Map, and Wardley Map

Rendering

3 Render Modes

2D SVG/PNG (default), 3D via Three.js (500-node limit with per-type 3D profiles), and ASCII Unicode box-drawing renderer for terminals and READMEs

Editor

Monaco + Excalidraw Editor

Monaco code editor with Mermaid syntax highlighting bidirectionally synced with an Excalidraw hand-drawn canvas — 20-level undo/redo and 1-second auto-save

Integrations

GitHub Bidirectional Sync

GitHub App with webhook-driven auto-sync on push events — conflict resolution UI, sync status dashboard, and Cloudflare Queue for async sync jobs with retry

Export

7 Export Formats

SVG, PNG (2x), PDF, JSON, ASCII, Mermaid DSL, and Draw.io XML — plus 6 import formats including PlantUML, D2, Graphviz DOT, and Draw.io XML

Collaboration

Real-Time Collaboration

Threaded comments with @mentions, 50–unlimited version history, live cursors, and real-time presence showing who's viewing a diagram (Team+)

Templates

25 Curated Templates

Industry-specific starting points filterable by technology, engineering, business, eCommerce, and general — one-click create

MCP

Standalone MCP Mode

Dual mode: connected to Flux API via API key, or fully standalone with local SQLite — no account required for local use

Open source MCP server — free forever The @sovyren/flux-mcp package is MIT licensed. Use it locally with SQLite — no account, no subscription ever required.

Simple, transparent pricing

Flux — choose the plan that fits your team

Free tier available — no credit card
Most Popular

Free

$0 /mo
$0 /mo

or $0/yr billed annually

  • 5 diagrams
  • 1 member
  • MCP server (all 14 tools)
  • All 14 diagram types
  • 2D / 3D / ASCII rendering
  • SVG, PNG, JSON, ASCII, Mermaid export
Get Early Access

Starter

$8 /mo
$6 /mo

or $72/yr billed annually

  • 50 diagrams
  • 5 members
  • GitHub sync
  • Version history (50 versions)
  • Threaded comments
  • PDF & Draw.io XML export
  • 3 API keys
Get Early Access

Team

$15 /mo
$12 /mo

or $144/yr billed annually

  • 500 diagrams
  • 25 members
  • Real-time collaboration
  • Live cursors & presence
  • Audit log
  • Custom roles
  • Unlimited version history
  • 10 API keys
Get Early Access

Enterprise

$Custom /mo
Custom /mo

or Custom/yr billed annually

  • Unlimited diagrams & members
  • SSO / SAML
  • MFA enforcement
  • IP allowlist
  • GDPR data export
  • Dedicated SLA
  • Priority support
Get Early Access

Who is this for?

Built for the people who need it most.

Software Engineer

The problem:

Diagrams live in Notion or Lucidchart, disconnected from code — keeping them current is manual and always forgotten

How Flux helps:

The Flux MCP server lets Claude or Cursor create and update diagrams inside the same AI conversation — diagrams stay current automatically

Engineering Manager

The problem:

Architecture diagrams drift from reality within weeks — no single source of truth across the team

How Flux helps:

GitHub sync makes the repo the source of truth — diagrams version alongside code and PRs can include diagram updates

Product Manager

The problem:

Can't read Mermaid DSL — depends on engineers for every visual diagram update

How Flux helps:

Natural language creation via MCP — ask Claude to create a swimlane of the onboarding flow and get it instantly in 14 visual diagram types

DevOps / Platform Engineer

The problem:

Infrastructure diagrams are always stale — no standard for documenting cloud topology

How Flux helps:

Infrastructure diagram type with AWS/GCP/Azure/Cloudflare icons and MCP analyze_codebase tool that generates dependency maps automatically

Business Analyst

The problem:

BPMN and Wardley map tools are specialized, expensive, and don't integrate with the engineering toolchain

How Flux helps:

BPMN and Wardley Map types built into Flux, accessible from any MCP AI client with export to Draw.io XML for stakeholders

Flux vs. the alternatives

See how Flux stacks up against the competition.

Lucidchart

Mcp Server

Flux

Lucidchart

AI Native

Flux

Lucidchart

AI panel (not MCP)

3d Rendering

Flux

Lucidchart

Ascii Export

Flux

Lucidchart

Github Sync

Flux

Lucidchart

Open Source

Flux

Lucidchart

Wardley Maps

Flux

Lucidchart

Eraser

Mcp Server

Flux

Eraser

AI Native

Flux

Eraser

Copilot (not MCP)

3d Rendering

Flux

Eraser

Ascii Export

Flux

Eraser

Github Sync

Flux

Eraser

Partial

Open Source

Flux

Eraser

Wardley Maps

Flux

Eraser

—

Mermaid Chart

Mcp Server

Flux

Mermaid Chart

AI Native

Flux

Mermaid Chart

3d Rendering

Flux

Mermaid Chart

Ascii Export

Flux

Mermaid Chart

Partial

Github Sync

Flux

Mermaid Chart

Partial

Open Source

Flux

Mermaid Chart

Partial

Wardley Maps

Flux

Mermaid Chart

—

Draw.io

Mcp Server

Flux

Draw.io

AI Native

Flux

Draw.io

3d Rendering

Flux

Draw.io

Ascii Export

Flux

Draw.io

Github Sync

Flux

Draw.io

Open Source

Flux

Draw.io

Apache-2.0

Wardley Maps

Flux

Draw.io

—

Ready to build with Flux?

Start free with the MCP server — no account needed. Join early access for GitHub sync, collaboration, and the full platform.

Get Early Access View on GitHub (coming soon)

Free tier forever · Early access updates by email · No credit card required