Justflow

Durable YAML workflows executed on Temporal.

CI Python Typed

Describe your workflow in YAML and implement its actions in Python or call an existing service. Temporal keeps track of progress, retries, and long-running waits. Justflow validates the workflow, manages its definitions, and provides APIs to start and inspect runs.

What you can build

  • Multi-step processes with branches, parallel work, child workflows, and failure handling.
  • Scheduled jobs, event-driven workflows, and appointment reminders.
  • Customer batches and individual customer workflows within a tenant's scope.
  • Workflows that call HTTPS, gRPC, or SQS-backed services and use resources such as S3 and PostgreSQL.
  • Your own dashboard using the public API, or an installation with the optional admin panel.

See the changelog for the full feature list and beta limitations.

Quickstart

The prime_stats example runs a complete workflow on your machine.

git clone https://github.com/nickyua/justflow.git
cd justflow
python3 -m venv .venv
.venv/bin/pip install -e ".[dev]" -e examples/prime_stats
.venv/bin/python -m justflow validate --config-dir examples/prime_stats/configs
.venv/bin/python -m justflow run prime_stats --config-dir examples/prime_stats/configs --param n=20 --param seed=42

This command starts a temporary Temporal development server and stops it after the workflow finishes. Use a persistent Temporal service for production.

Install

pip install justflow
pip install "justflow[control,admin]"

Core includes direct and HTTPS transports. Optional extras are aws, grpc, postgres, redis, control, admin, and all. Justflow supports Python 3.11–3.14.

Public interfaces

  • Export versioned JSON Schemas for your editor with justflow schema export --output .justflow/schemas.
  • Export the OpenAPI 3.1 document for dashboard and automation clients with justflow api schema export --output .justflow/api.
  • The optional admin panel is a separate package that uses these same tenant-scoped APIs.
  • Your application supplies authentication, integrations, storage, and Temporal credentials through typed Python interfaces.

Documentation

Development

.venv/bin/pip install -e packages/justflow-admin
npm --prefix ui/admin ci
make check

This runs frontend checks, formatting, typing, unit/integration/replay/sandbox tests, documentation checks, and package installation tests. See CONTRIBUTING.md.

Status and license

0.1 is beta software. Read the support policy, security policy, changelog, and limitations before production adoption.

Licensed under the Apache License 2.0; attribution details are in NOTICE.

Project links

Data verified by PyPI on Sep 10, 2026
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Credits

Author: Mykyta Bakunov

GitHub Statistics

Data verified by PyPI on Sep 10, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

Apache-2.0
View SPDX License List

Requires

Python >=3.11

Provides Extra

admin all aws control dev grpc postgres redis

Tags

dsl durable-execution justflow orchestration temporal workflow yaml

Classifiers

Report project as malware

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