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Multi-workflow SWF Decider and Workflow Management Service

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Build status codecov Documentation Status

Multi-workflow SWF decider and workflow management service.


  • Start a decider on many workflows
  • Specify a directed graph (aka DAG) of activity (via dependencies) tasks in the workflow
  • Supports coloured logging
  • Extensible decision-building: just subclass seddy.DecisionsBuilder
  • Register workflows
  • Customise task input

What seddy doesn't do:

  • Activity workers
  • Anything AWS CLI can
    • Workflows listing and detailing
    • Workflow execution management and history detailing
    • Tag management
    • Domain management
    • Activities management
  • Validate workflow execution input
  • Manage workflows definition file (seddy just uses it)


pip3 install seddy

Install extra packages for further functionality

  • Coloured logging: coloredlogs
  • YAML workflows specs file: pyyaml or ruamel.yaml
  • JSON-format logging: python-json-logger


Get the CLI usage

seddy -h

API documentation

pydoc3 seddy


Instead of installing seddy locally, you can use our pre-built Docker image

docker run -v /path/to/workflow/file/parent:/seddy-data seddy -h

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