API

API Access

Integrate lex-aero into your own applications

The lex-aero API gives developers and organisations programmatic access to the same hybrid search and AI-powered answer engine that powers the chat interface. Query EASA regulations, ICAO Annexes, and national aviation legislation (including Dutch law) from any application — EFB systems, compliance dashboards, document management tools, or custom workflows.

Planned endpoint structure

The API will follow REST conventions and return JSON. Authentication uses API keys passed via the Authorization: Bearer <key> header.

REST · JSON · API key authv1

# Search endpoint
POST https://api.lex-aero.eu/v1/search

Authorization: Bearer <your-api-key>
Content-Type: application/json

{
  "query": "FCL.055 language proficiency requirements",
  "source_filter": "EASA",        // "EASA" | "ICAO" | "NL" | null
  "top_k": 5                      // number of source chunks to return
}

# Response
{
  "answer": "...",
  "sources": [
    {
      "source": "EASA",
      "document": "Part-FCL",
      "version": "v2023/1595",
      "article_nr": "FCL.055",
      "content": "...",
      "score": 0.94
    }
  ],
  "conversation_id": "uuid"
}

Planned features

Full-text + semantic hybrid search across EASA, ICAO and national sources
AI-generated answers with exact article references
Source filtering per regulatory body
AMC & GM document access
Streaming responses via SSE
Rate limits: 1,000 req/day on Pro, unlimited on Team

Get notified when the API launches

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