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Creating Completely New Custom Rulesets

To create a completely new custom ruleset that isn’t based on an existing one, use one of the following approaches:

After you create the ruleset, see Validating and Publishing Custom Rulesets.

As with custom code and configurations, rulesets are not considered supported MuleSoft products. For help with issues with custom rulesets, post an issue in the AMF Custom Validator Github repository.

Generating Rulesets from a Specification

You can generate a starter ruleset from specifications' data schemas using the following command sequence:

Inspect API Specifications for API Type

Use the following command to inspect API specifications for API type. This helps you determine which data schema to use.


> governance:api:inspect [flags] <api-specification>

This command inspects the API specification passed in api-specification and lists all its schemas, such as headers, requests, and response payloads. You can use this schema information in the governance:ruleset:init command. See governance:ruleset:init.

This command accepts only the default flags.

Example command:

anypoint-cli-v4 governance:api:inspect my-healthcare-api.yaml

Example schema

        description: Whether patient is part of a multiple birth
        type: boolean
        description: Whether patient is part of a multiple birth
        type: integer


    type: FHIR_commons.Entry
      resource: Patient

    type: FHIR_commons.Bundle
      entry?: PatientEntry[]

Example output:


Initialize Rulesets from Data Schemas

Use the following command to initialize rulesets from data schemas.


> governance:ruleset:init [flags] <schema>

This command initializes a ruleset based on the data schema passed in the schema parameter.

Besides the default flags, this command also accepts:

Flag Description

--types <types>

The types flag gives the target types to export as rules. You can use the governance:api:inspect command to identify the types to specify for this flag. See governance:api:inspect.

--name <name>

The name flag is the name of the ruleset. This defaults to GeneratedRuleset.

Example command:

anypoint-cli-v4 governance:ruleset:init --types patientmultipleBirthBoolean,patientBundle,patientmultipleBirthInteger --name=my-ruleset mydataschema

Create Rulesets Using the Ruleset Development CLI

An open-source version of ruleset development CLI is available on npm. It is provided and documented separately from the Anypoint CLI governance commands.

To create rulesets using the ruleset development CLI:

  1. Install ruleset-development-cli from

  2. Follow the AMF Rulesets tutorial to create a ruleset.

Create Rulesets Using the Modeling Language

To create rulesets using the modeling language, read the AMF Custom Validation section in the AML Open Source project to learn how to write a ruleset using the modeling language.