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Chronicle is the permanode (sometimes also called indexer or scanner) for the IOTA-based networks. It connects to a Hornet via the IOTA Node Extension (INX) interface. Through the INX interface, Chronicle listens to all blocks in the Tangle that are referenced by a milestone and stores them in a MongoDB database.


The documentation for Chronicle can be found in our wiki, the supported APIs are documented here.


This project uses conventional commits to automatically generate a which signals breaking changes. The changelog can be created using the following command (requires the conventional-changelog-cli package on NPM):

conventional-changelog -p conventionalcommits -i -s