This repository ships two different things, licensed differently.

The code — the TypeScript source, compiled output, type definitions,
scoring engine, validation, localization logic, and JSON Schema,
everything that makes psytools run — is licensed under the MIT
License below. Copyright (c) 2026 Samed Kahyaoglu.

The bundled instrument text — the titles, descriptions, instructions,
item wording, and answer-option labels of the twenty-seven third-party
psychological assessment instruments psytools ships, in every
language psytools provides them — is licensed by each instrument's
own rights holder, on the terms recorded instrument by instrument in
SOURCES.md. SOURCES.md, not the MIT License below, is where your
rights over any specific instrument's text come from.

Most bundled instruments are free to use, including in commercial
products, though a few carry a lighter condition of their own —
mandatory attribution, most notably. Five need their rights holder's
permission before commercial use: the ECR-R, the ERQ, and the HSPS,
which SOURCES.md tags "Research only," and the SWLS and the
Flourishing Scale, which SOURCES.md tags "Free with conditions" but
whose own terms are non-commercial-only — the same restriction in
substance, under a different tag. One more, the EAT-26, is free for
individual use but requires a licensing agreement from its copyright
holder for commercial web platforms that charge user fees. Four
others — the AQ-10, the RSES, the CSI-16, and the UCLA Loneliness
Scale — are neither free nor restricted for commercial use: their
rights holders simply haven't addressed it, so confirm with them
before shipping commercially. Read SOURCES.md before you rely on any
instrument's text, particularly before commercial use.

The MIT License below is the license for the code. The bundled
instrument text is licensed as described above, not under this MIT
grant.


MIT License

Copyright (c) 2026 Samed Kahyaoglu

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


"The Software" above means the code described above — psytools' own
source, build output, and documentation. Rights over the bundled
instrument text come from that text's own rights holder, per
SOURCES.md.