Isometra renders content from one or more SRD editions side by side. Each character or campaign is bound to one rule set; the licenses below cover the underlying rules text.
This work includes material from the System Reference Document 5.1 ("SRD 5.1") by Wizards of the Coast LLC, available at https://dnd.wizards.com/resources/systems-reference-document. The SRD 5.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.
2014 PHB/DMG/MM baseline released by WotC under CC BY 4.0 in January 2023.
Includes content from Tome of Beasts 1-3, Creature Codex, Tome of Heroes, Black Flag SRD, Kobold Press, Vault of Magic, Warlock Archives, Deep Magic 5e, Deep Magic Extended, Level Up Advanced 5e, Critical Role: Tal'Dorei, and Open5e Original Content. Each document carries its own license; consult content_documents.license_url per row.
Archive bundle of third-party 5e-compatible content that was previously co-mingled with srd-5.1 by the Open5e import. Moved here on 2026-05-09 (Phase G) so srd-5.1 can be a clean reflection of the official WotC SRD 5.1 PDF. Re-activate at your own risk — license per row, not per rule_set.
This work includes material from the System Reference Document 5.2.1 ("SRD 5.2.1") by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.
2024 PHB/DMG/MM revision released by WotC under CC BY 4.0; 5.2.1 is the May 2025 revision of the April 2025 5.2 release.
Per Creative Commons Attribution 4.0 §3(a)(1)(B), this work indicates how the licensed Material has been modified. SRD content has been excerpted from the published PDFs and reformatted as structured relational data (database rows + JSON) for in-app rendering. Spell and item entries that are renamed in their source SRD (e.g. “Hideous Laughter”) appear under their renamed form; others are reproduced verbatim. No rules content has been altered, expanded, or replaced. Any homebrew content created by users is clearly labelled as such and is not represented as SRD material.
Isometra renders or consumes the third-party works listed below. Each is used under the license stated in its section. This file is the canonical attribution record; the same notices are surfaced to end users on /about/licensing.
Work: Dungeons & Dragons System Reference Document 5.1 Rightsholder: Wizards of the Coast LLC License: Creative Commons Attribution 4.0 International (CC-BY-4.0) License text: https://creativecommons.org/licenses/by/4.0/legalcode Source: https://dnd.wizards.com/resources/systems-reference-document
Portions of Isometra — specifically the class-feature descriptions, class
ASI cadences, spell text, item descriptions, and related rules text stored
in the content_* Supabase tables — are derived from the SRD 5.1 and are
used under CC-BY-4.0. Dungeons & Dragons and associated trademarks are
property of Wizards of the Coast LLC; their use here is for compatibility
and reference purposes only and does not imply endorsement.
Work: 5e-database — JSON transcription of SRD 5.1 content
Repository: https://github.com/5e-bits/5e-database
Copyright: (c) 2018-2020 Adrian Padua, Christopher Ward
License: MIT
The structured JSON at
https://raw.githubusercontent.com/5e-bits/5e-database/main/src/2014/5e-SRD-Features.json
is fetched and transformed by scripts/generate-class-features.mjs into
a committed static TypeScript output. The 5e-database project's code and
JSON structure are licensed MIT; the underlying rules text remains
under the SRD 5.1 / CC-BY-4.0 attribution above.
If you add another third-party source to this repository, append it here with (a) the work name, (b) the rightsholder / author, (c) the license, and (d) where in the codebase it lives.
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