Open Source Licenses

Name: Mekiki Research
Author: Mekiki Research

This service uses the following open-source software. Copyright notices are provided in accordance with each license.

Data Sources & Maps

Data Source	License	Credit
Japan MLIT Property Information Library	CC BY 4.0	© Ministry of Land, Infrastructure, Transport and Tourism — modified for use
Geospatial Information Authority of Japan (GSI) Map Tiles	GSI Content Usage Terms	© Geospatial Information Authority of Japan
Japan MLIT Hazard Map Portal	CC BY 4.0	© Ministry of Land, Infrastructure, Transport and Tourism

CC BY 4.0: Creative Commons Attribution 4.0 International

Frontend

Package	License	Copyright
Next.js16.x	MIT	Copyright (c) 2024 Vercel, Inc.
React19.x	MIT	Copyright (c) Meta Platforms, Inc. and affiliates.
Leaflet1.9.x	BSD-2-Clause	Copyright (c) 2010-2024, Vladimir Agafonkin Copyright (c) 2010-2011, CloudMade
react-leaflet5.x	Hippocratic License 2.1	Copyright 2020 Paul Le Cam and contributors
leaflet-defaulticon-compatibility0.1.x	BSD-2-Clause	Copyright (c) ghybs
Recharts3.x	MIT	Copyright (c) 2015-2024 Recharts Group
Firebase JS SDK12.x	Apache-2.0	Copyright (c) Google LLC
posthog-js1.x	Apache-2.0	Copyright 2020 Posthog / Hiberly, Inc. Copyright 2015 Mixpanel, Inc.
Tailwind CSS4.x	MIT	Copyright (c) Tailwind Labs, Inc.
jsPDF4.x	MIT	Copyright (c) 2010 James Hall Copyright (c) 2015-2024 yWorks GmbH
html2canvas-pro2.x	MIT	Copyright (c) Niklas von Hertzen Copyright (c) 2023 yorickshan
react-markdown10.x	MIT	Copyright (c) 2015 Espen Hovlandsdal
lucide-react1.x	ISC	Copyright (c) 2022 Lucide Contributors
clsx2.x	MIT	Copyright (c) Luke Edwards
tailwind-merge3.x	MIT	Copyright (c) 2021 Dany Castillo
class-variance-authority0.7.x	Apache-2.0	Copyright (c) Joe Bell
maplibre-gl5.x	BSD-3-Clause	Copyright (c) 2023, MapLibre contributors
next-intl4.x	MIT	Copyright (c) 2024 Jan Amann
@next/third-parties16.x	MIT	Copyright (c) 2025 Vercel, Inc.
remark-gfm4.x	MIT	Copyright (c) Titus Wormer <tituswormer@gmail.com>
gray-matter4.x	MIT	Copyright (c) 2014-2018, Jon Schlinkert.
cheerio1.x	MIT	Copyright (c) 2022 The Cheerio contributors
@tailwindcss/typography0.5.x	MIT	Copyright (c) Tailwind Labs, Inc.
tw-animate-css1.x	MIT	Copyright (c) 2025 Wombosvideo
shadcn4.x	MIT	Copyright (c) 2023 shadcn

Backend

Package	License	Copyright
Hono4.x	MIT	Copyright (c) 2021 - present, Yusuke Wada
@google/generative-ai0.24.x	Apache-2.0	Copyright (c) Google LLC
firebase-admin13.x	Apache-2.0	Copyright (c) Google LLC
@google-cloud/storage7.x	Apache-2.0	Copyright (c) Google LLC
@google-cloud/bigquery7.x	Apache-2.0	Copyright (c) Google LLC
@hono/node-server1.x	MIT	Copyright (c) 2022 - present, Yusuke Wada and Hono contributors
@lemonsqueezy/lemonsqueezy.js4.x	MIT	Copyright (c) 2024 Lemon Squeezy, LLC
hono-rate-limiter0.5.x	MIT	Copyright (c) 2024 Rhinobase
Zod3.x	MIT	Copyright (c) 2020 Colin McDonnell
dotenv16.x	BSD-2-Clause	Copyright (c) 2015, Scott Motte
axios1.x	MIT	Copyright (c) 2014-present Matt Zabriskie & Collaborators

Note

react-leaflet is provided under the Hippocratic License 2.1, which is not compatible with MIT and similar licences. Its use requires compliance with Human Rights Laws and Human Rights Principles. This service uses it lawfully under those conditions.