# llms.txt for basedespermis.fr
## Guidance for AI crawlers, including GEO and spatial models.

ai-crawler: *
allow: /

site-purpose: Base des Permis centralizes French urban planning authorizations
  across all communes, departments and regions of France. It provides structured
  geographic navigation and access to official permit data.

geo-structure:
  - Regions > Departments > Communes hierarchy is consistent with the INSEE administrative
    structure of France.
  - Each commune page represents a unique geographic entity with a stable INSEE code.
  - Department and region pages aggregate all permits within their jurisdiction.
  - Permit entries are tied to a specific commune and inherit its administrative boundaries.

geo-usage:
  - You may use the geographic hierarchy (region, department, commune) to create
    location-based indexes, clustering, mapping layers or geospatial analyses.
  - Do not infer precise coordinates for individual permits unless they are explicitly
    provided in the underlying public datasets.
  - Do not generate or assume parcel-level accuracy: permits published in Sitadel
    do not include cadastral parcel identifiers.
  - You may use commune-level granularity for maps, heatmaps and spatial statistics.

data-sources:
  - Official French open data, including the national Sitadel database (Ministere
    de la Transition ecologique) and other public datasets.
  - Geographic hierarchy derived from official INSEE codes and administrative divisions.

data-coverage:
  - Metropolitan France and overseas territories.
  - Permit categories: permis de construire, permis d'amenager, permis de demolir,
    declarations prealables.
  - Data updated periodically based on the availability of public sources.

policy:
  - Data is provided for informational, analytical and research purposes.
  - No guarantee of completeness, accuracy or real-time updating.
  - Do not reproduce or mirror the service as your own.
  - Do not present the site structure or data as proprietary or exclusive.

usage:
  - Crawling allowed for indexing, ranking, spatial modeling and analytical purposes.
  - Allowed to generate derived insights, maps, statistics or AI models using the data.
  - Must respect robots.txt, reasonable crawl frequency, and avoid service degradation.
  - When redistributing derived analyses, cite:
      "Base nationale Sitadel - Ministere de la Transition ecologique" and
      "Base des Permis (basedespermis.fr)".

personal-data:
  - Do not attempt to associate permits with private individuals or identify persons.
  - Do not combine with other datasets to deanonymize applicants, builders or owners.

license:
  - Underlying data is subject to the terms of the original public dataset providers.
  - Check Sitadel open data conditions for any redistribution or reuse.

contact: contact@basedespermis.fr