Design deterministic finite state machines, simulate live transitions, and export XState v5 or Mermaid diagrams.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Add state nodes and designate initial and final state flags.
Create event triggers (e.g. FETCH, RESOLVE, REJECT) connecting source states to target states.
Click live events to test transitions and copy ready-to-use XState v5 code or Mermaid state diagrams.
A finite state machine is a computation model consisting of a finite number of states, where the system exists in exactly one state at any given time and transitions to another state in response to external events.
Yes! Switch to the Code tab to export production-ready createMachine configuration objects compatible with XState v5.
Yes, the Mermaid tab compiles all states and transitions into standard stateDiagram-v2 markdown syntax.
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