Meltano Map Transformer

meltano-map-transformer (meltano variant)

A map transformer which implements the Stream Maps capability from Meltano's tap and target SDK.

The meltano-map-transformer mapper is a plugin for transforming data between an extractor and a loader. Commonly used for obfuscating, filtering, or removing sensitive data from streams.

Getting Started


If you haven't already, follow the initial steps of the Getting Started guide:

  1. Install Meltano
  2. Create your Meltano project

Installation and configuration

  1. Add the meltano-map-transformer mapper to your project using
    meltano add
  2. meltano add mapper meltano-map-transformer
  3. Configure the meltano-map-transformer settings using
    meltano config
  4. meltano config meltano-map-transformer set --interactive

Next steps

Follow the remaining steps of the Getting Started guide:

  1. Inline Data Mapping
  2. See the mappers documentation or the plugin repo's for more details on configuration.

If you run into any issues, learn how to get help.


The current capabilities for meltano-map-transformer may have been automatically set when originally added to the Hub. Please review the capabilities when using this mapper. If you find they are out of date, please consider updating them by making a pull request to the YAML file that defines the capabilities for this mapper.

This plugin has the following capabilities:

  • stream-maps

You can override these capabilities or specify additional ones in your meltano.yml by adding the capabilities key.


The meltano-map-transformer settings that are known to Meltano are documented below. To quickly find the setting you're looking for, click on any setting name from the list:

You can also list these settings using

meltano config
with the list subcommand:

meltano config meltano-map-transformer list

You can override these settings or specify additional ones in your meltano.yml by adding the settings key.

Please consider adding any settings you have defined locally to this definition on MeltanoHub by making a pull request to the YAML file that defines the settings for this plugin.

Stream Maps (stream_maps)


Config object for stream maps capability. For more information check out Stream Maps.

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set stream_maps [value]

Something missing?

This page is generated from a YAML file that you can contribute changes to.

Edit it on GitHub!

Looking for help?

If you're having trouble getting the meltano-map-transformer mapper to work, look for an existing issue in its repository, file a new issue, or join the Meltano Slack community and ask for help in the


meltano add mapper meltano-map-transformer

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