License

Fallen-8 is released under the MIT License. The canonical copy is LICENSE in the repository root, and the text below reproduces it.

Copyright (c) 2011-2026 Henning Rauch

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.

What MIT covers

All of Fallen-8’s own code: the engine, the REST API, the MCP server, the NLP sidecar, F8 Studio, and this documentation site. Source files carry the header verbatim, and no foreign source is vendored into the tree, so the single copyright holder above covers the whole repository.

Third-party components

MIT does not extend to material Fallen-8 derives from elsewhere, pulls at run time, or runs alongside itself. Each carries its own upstream licence, and that licence governs your use of it.

Class	What it is
Sample datasets	air-routes is derived from OpenFlights airports.dat and routes.dat at a pinned commit; karate-club is Zachary’s 1977 karate club; fallen8-deps is built from GitHub’s SBOM of Fallen-8’s own dependencies. The derived .jsonl files are committed and ship with the app, see the sample gallery.
Model weights	None are shipped. The model sidecar pulls bge-m3 (embeddings) and the assist models phi4-mini, phi4-f8-mini and phi4-f8 (Phi-4 family) on first start, and the NLP image bakes in a spaCy English model (en_core_web_lg, or en_core_web_trf on the GPU build) at build time. All are MIT. See running.
Container images	The images build on mcr.microsoft.com/dotnet/*, node:22-alpine, nginx:1.27-alpine, python:3.12-slim and ollama/ollama, and the stack runs docling-serve plus the observability sidecars (OpenTelemetry Collector, Prometheus, Tempo, Loki, Grafana) as unmodified upstream images.
Package dependencies	The built artifacts bundle their NuGet, npm and pip dependencies. Most are MIT, but the set also includes Apache-2.0, MPL-2.0, BSD, ISC and other terms. Per-package licences are in the SBOM, and the fallen8-deps sample carries them on each package vertex as a license property.