---
title: "IO (Inputs/Outputs) Specification"
sub_link: "specification/io"
code_link: "https://github.com/polyaxon/cli/blob/master/cli/polyaxon/_flow/io/io.py"
meta_title: "Inputs/Outputs - Polyaxon Specification"
meta_description: "Each Component may have its own inputs and outputs. The inputs and outputs describe the expected parameters to pass to the component and their types. In the context of a DAG, inputs and outputs types are used to validate the flow of information going from one operation to another."
visibility: public
status: published
tags:
  - specification
  - api
  - polyaxon
  - yaml
  - json
  - python
sidebar: "core"
---

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