redocly-cli/docs/rules/parameter-description.md

slug

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/docs/cli/rules/parameter-description

parameter-description

Ensure that every parameter has a description.

OAS	Compatibility
2.0	✅
3.0	✅
3.1	✅

API design principles

A parameter should have a description because documentation is important. That parameter filter that is self-documenting and intuitive is the same filter that you need to look into the source code to determine what kind of values to provide to it 7 months from now. Document it!

Configuration

Option	Type	Description
severity	string	Possible values: off, warn, error. Default off (in recommended configuration).

An example configuration:

rules:
  parameter-description: error

Examples

Given this configuration:

rules:
  parameter-description: error

Example of an incorrect parameter:

paths:
  /customers/{id}:
    post:
      parameters:
        - name: id
          in: path
          required: true

Example of a correct parameter:

paths:
  /customers/{id}:
    post:
      parameters:
        - name: id
          in: path
          required: true
          description: The customer's ID.

Related rules

• tag-description
• operation-description
• configurable rules

Resources

• Rule source
• Parameter docs