The Mina Indexer

Constructs and serves indices of the Mina blockchain via GraphQL.

The Mina Indexer uses precomputed blocks (logged by a Mina node) as the source of truth for the blockchain.

See an instance of the Mina Indexer in action at MinaSearch.

Development Prerequisites

1. Install Nix.
2. Install and configure Direnv.

Execution Environment

Set ulimit -n (max open files) to 4096 or more.

Building the Project

Run rake check to check for errors. See also the output of rake for other options.

Storage

The default storage location is on /mnt because the testing code may download large volumes of test data, and placing on /mnt gives an opportunity to use different storage volumes from one's build directory.

Set the VOLUMES_DIR environment variable if you want to replace /mnt with another path.

Testing

Unit Tests

Execute unit tests to validate code functionality with:

rake test

Regression Tests

To quickly perform regression tests, which check for new bugs in existing features after updates, use:

rake dev

To perform the test battery that the CI runs, use:

rake test
rake test_system

Deployment

rake deploy:local_prod uses the Nix-based release binary

Generating OCI Images With Nix

Note: This requires the Docker Engine to be installed.

Building the OCI (Docker) image from Nix must happen from an x86-64-linux machine.

Issue the following command to build the image and load it into Docker:

rake build:oci_image

License

Copyright 2022-2025 Granola Systems Inc.

This software is licensed under the Apache License, Version 2.0.