Basic Information & FAQ for Commercial Inquiries
Lumbra’s Gigabase provides a reliable data foundation for chess apps, training platforms, and engines. Explore our licensing models, technical interfaces, and the legal framework for your project.
01
Free Development Phase
Using the database during the internal development phase and for closed beta testing is completely free of charge. Commercial license fees only apply once your project officially goes live and becomes accessible to end-users.
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Free for internal development.
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Permitted for private beta tests.
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Maximum of 50 non-paying testers.
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Up to 6 months evaluation period.
02
Raw Data Protection & Derived Data
The database is designed to power internal application features. To protect the underlying data, offering full bulk exports or direct downloads of the raw PGN files to end-users is strictly prohibited. The creation and internal use of derived metadata is permitted.
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No bulk downloads for end-users.
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Conversion into internal formats.
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Derived statistics permitted.
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Use for internal engine features.
03
Strict Data Separation (Clean Room)
Our commercial license strictly excludes datasets governed by restrictive copyleft licenses (such as CC BY-SA). This guarantees that your commercial project remains legally secure and unaffected by third-party “ShareAlike” clauses.
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Exclusion of CC BY-SA bulk data.
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Use of license-free API sources.
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Protection against ShareAlike terms.
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Secure B2B data foundation.
04
Structured Export Interface
Monthly updates are delivered with machine-readable manifest and change files. Using stable game IDs, developers can process new, updated, or removed games automatically and incrementally into their existing system architectures.
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Stable Deduplicator IDs.
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Incremental .changes.jsonl feeds.
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Manifest files for validation.
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Automatable data pipelines.