A schema registry system
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Iglu Schema Repository

Join the chat at https://gitter.im/snowplow/iglu Build Status Release License

Iglu is a machine-readable, open-source schema repository for JSON Schema from the team at Snowplow Analytics. A schema repository (sometimes called a registry) is like npm or Maven or git, but holds data schemas instead of software or code.

Iglu is used extensively in Snowplow. For a presentation on how we came to build Iglu, see this blog post.

Iglu technology 101

Iglu consists of two key components:

  1. Clients that can resolve schemas from one or more Iglu repositories
  2. Servers that can host an Iglu repository over HTTP


We also operate Iglu Central (repo), which is like RubyGems.org or Maven Central but for storing publically-available JSON Schemas.

At this time, Iglu only supports self-describing JSON Schemas that use SchemaVer.

Find out more

Technical Docs Setup Guide Roadmap Contributing
i1 i2 i3 i4

Questions or need help?

All support for Iglu is handled through the standard Snowplow Analytics channels. Check out the Talk to us page on the Snowplow wiki.

Copyright and license

Iglu is copyright 2014-2018 Snowplow Analytics Ltd.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this software except in compliance with the License.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.