State Machine Python Packages

transitions

A lightweight, object-oriented finite state machine implementation in Python with many extensions

python-statemachine

Expressive statecharts and FSMs for modern Python.

django-fsm

Django friendly finite state machine support

burr

Build applications that make decisions (chatbots, agents, simulations, etc...). Monitor, trace, persist, and execute on your own infrastructure.

besser

A Python-based AI-enhanced low-code open-source platform for smart software development

patitas

ฅᨐฅ Patitas — CommonMark Markdown parser for Python 3.14+ with typed AST and free-threading

ain-state-compiler

AIN State Compiler is a local-first enterprise AI state compiler that continuously transforms Slack, Jira, and Gmail logs into executable, conflict-resolved operational state. Built with Python and SQLite.

rosettes

⌾⌾⌾ Rosettes — ReDoS-safe syntax highlighter for Python 3.14+ with free-threading.

junai-mcp

junai is 'Just Un-AI' routing with full AI power. Your agents stay smart. Your pipeline stays predictable. Deterministic agent pipeline for VS Code + GitHub Copilot. A Python state machine routes 23 specialised AI agents through 9 stages — no hallucinated routing, git-blameable transitions.

context-compiler

Deterministic state engine for managing conversation state and constraints in LLM applications.

stratum-mcp

State machine dispatch server for AI agent workflows. Typed YAML specs, MCP server (stratum-mcp), and Python library (stratum-py) — postconditions, retries, gates, and auditable execution traces for Claude Code and Codex.

apache-burr

Build applications that make decisions (chatbots, agents, simulations, etc...). Monitor, trace, persist, and execute on your own infrastructure.

sqlalchemy-fsm

SQLAlchemy finite state machine support

mi-flatland

Model text file + layout text file -> beautiful diagram

theodosia

Put an AI agent on rails: mount a Burr state machine as an MCP server so the agent can only take the next allowed step, with every step recorded and replayable.

stargraph

Stateful agent-graph framework with deterministic governance — rules route transitions, not the LLM. Auditable, replayable. Built on Fathom.

fsmpy

:arrows_counterclockwise: Minimal State Machine

avtomatika

High-performance state-machine based orchestrator for managing complex AI agents and asynchronous workflows. Separates process logic (Blueprints) from execution (Workers).

django-river

Django workflow library that supports on the fly changes ⛵

integration-automation-patterns

Reference patterns for reliable enterprise integration, workflow automation, and system-of-record synchronization.

miros

Python statecharts

bpod-core

A modern Python interface for Bpod Finite State Machines.

truenorth-framework

Declare the outcome, skip the logic. The developer-first infrastructure engine for structured, multi-turn AI conversations with built-in safety, async follow-ups, and native compliance

temple8

Spec-driven agent orchestration template. YAML state machines route multi-agent workflows. Any LLM, any process, zero lock-in.